mirror of
https://github.com/TryGhost/Ghost.git
synced 2024-12-18 07:51:55 +03:00
3002747b68
no issue - we store dates without milliseconds in the database - our test environment does not use our model layer to insert data, this is related to https://github.com/TryGhost/Ghost/issues/7196 - so it can happen that the test env inserts unix timestamps instead of a formatted string - e.g. adding data via the model layer (e.g. via the API) the format is always normalised to `YYYY-MM-DD HH:mm:ss` - if we fetch the date from the database, we have a hook which sorts out knex returning different formats for dates - this hook wraps the returned date into a UTC moment date, but adds the current milliseconds on top - which can collide in tests when you have specific assertions - use `startOf` to ignore milliseconds - furthermore: remove the mentionings of `pg` (postgres)
711 lines
25 KiB
JavaScript
711 lines
25 KiB
JavaScript
// # Base Model
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// This is the model from which all other Ghost models extend. The model is based on Bookshelf.Model, and provides
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// several basic behaviours such as UUIDs, as well as a set of Data methods for accessing information from the database.
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//
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// The models are internal to Ghost, only the API and some internal functions such as migration and import/export
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// accesses the models directly. All other parts of Ghost, including the blog frontend, admin UI, and apps are only
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// allowed to access data via the API.
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var _ = require('lodash'),
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bookshelf = require('bookshelf'),
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moment = require('moment'),
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Promise = require('bluebird'),
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ObjectId = require('bson-objectid'),
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config = require('../../config'),
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db = require('../../data/db'),
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errors = require('../../errors'),
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filters = require('../../filters'),
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schema = require('../../data/schema'),
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utils = require('../../utils'),
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validation = require('../../data/validation'),
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plugins = require('../plugins'),
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i18n = require('../../i18n'),
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ghostBookshelf,
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proto;
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// ### ghostBookshelf
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// Initializes a new Bookshelf instance called ghostBookshelf, for reference elsewhere in Ghost.
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ghostBookshelf = bookshelf(db.knex);
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// Load the Bookshelf registry plugin, which helps us avoid circular dependencies
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ghostBookshelf.plugin('registry');
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// Load the Ghost access rules plugin, which handles passing permissions/context through the model layer
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ghostBookshelf.plugin(plugins.accessRules);
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// Load the Ghost filter plugin, which handles applying a 'filter' to findPage requests
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ghostBookshelf.plugin(plugins.filter);
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// Load the Ghost include count plugin, which allows for the inclusion of cross-table counts
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ghostBookshelf.plugin(plugins.includeCount);
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// Load the Ghost pagination plugin, which gives us the `fetchPage` method on Models
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ghostBookshelf.plugin(plugins.pagination);
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// Update collision plugin
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ghostBookshelf.plugin(plugins.collision);
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// Cache an instance of the base model prototype
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proto = ghostBookshelf.Model.prototype;
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// ## ghostBookshelf.Model
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// The Base Model which other Ghost objects will inherit from,
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// including some convenience functions as static properties on the model.
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ghostBookshelf.Model = ghostBookshelf.Model.extend({
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// Bookshelf `hasTimestamps` - handles created_at and updated_at properties
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hasTimestamps: true,
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// Ghost option handling - get permitted attributes from server/data/schema.js, where the DB schema is defined
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permittedAttributes: function permittedAttributes() {
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return _.keys(schema.tables[this.tableName]);
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},
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// Bookshelf `defaults` - default values setup on every model creation
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defaults: function defaults() {
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return {};
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},
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// When loading an instance, subclasses can specify default to fetch
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defaultColumnsToFetch: function defaultColumnsToFetch() {
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return [];
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},
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// Bookshelf `initialize` - declare a constructor-like method for model creation
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initialize: function initialize() {
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var self = this,
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options = arguments[1] || {};
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// make options include available for toJSON()
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if (options.include) {
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this.include = _.clone(options.include);
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}
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[
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'fetching',
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'fetching:collection',
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'fetched',
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'creating',
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'created',
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'updating',
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'updated',
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'destroying',
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'destroyed',
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'saved'
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].forEach(function (eventName) {
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var functionName = 'on' + eventName[0].toUpperCase() + eventName.slice(1);
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if (functionName.indexOf(':') !== -1) {
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functionName = functionName.slice(0, functionName.indexOf(':'))
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+ functionName[functionName.indexOf(':') + 1].toUpperCase()
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+ functionName.slice(functionName.indexOf(':') + 2);
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functionName = functionName.replace(':', '');
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}
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if (!self[functionName]) {
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return;
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}
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self.on(eventName, function eventTriggered() {
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return this[functionName].apply(this, arguments);
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});
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});
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this.on('saving', function onSaving() {
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var self = this,
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args = arguments;
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return Promise.resolve(self.onSaving.apply(self, args))
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.then(function validated() {
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return Promise.resolve(self.onValidate.apply(self, args));
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});
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});
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},
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onValidate: function onValidate() {
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return validation.validateSchema(this.tableName, this.toJSON());
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},
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onCreating: function onCreating(newObj, attr, options) {
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// id = 0 is still a valid value for external usage
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if (_.isUndefined(newObj.id) || _.isNull(newObj.id)) {
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newObj.setId();
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}
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if (schema.tables[this.tableName].hasOwnProperty('created_by') && !this.get('created_by')) {
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this.set('created_by', this.contextUser(options));
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}
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if (!newObj.get('created_at')) {
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newObj.set('created_at', new Date());
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}
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if (!newObj.get('updated_at')) {
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newObj.set('updated_at', new Date());
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}
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},
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onSaving: function onSaving(newObj, attr, options) {
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// Remove any properties which don't belong on the model
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this.attributes = this.pick(this.permittedAttributes());
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// Store the previous attributes so we can tell what was updated later
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this._updatedAttributes = newObj.previousAttributes();
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this.set('updated_by', this.contextUser(options));
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},
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/**
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* before we insert dates into the database, we have to normalize
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* date format is now in each db the same
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*/
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fixDatesWhenSave: function fixDates(attrs) {
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var self = this;
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_.each(attrs, function each(value, key) {
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if (value !== null
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&& schema.tables[self.tableName].hasOwnProperty(key)
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&& schema.tables[self.tableName][key].type === 'dateTime') {
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attrs[key] = moment(value).format('YYYY-MM-DD HH:mm:ss');
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}
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});
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return attrs;
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},
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/**
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* all supported databases (sqlite, mysql) return different values
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*
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* sqlite:
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* - knex returns a UTC String
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* mysql:
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* - knex wraps the UTC value into a local JS Date
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*/
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fixDatesWhenFetch: function fixDates(attrs) {
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var self = this;
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_.each(attrs, function each(value, key) {
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if (value !== null
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&& schema.tables[self.tableName].hasOwnProperty(key)
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&& schema.tables[self.tableName][key].type === 'dateTime') {
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attrs[key] = moment(value).startOf('seconds').toDate();
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}
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});
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return attrs;
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},
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// Convert integers to real booleans
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fixBools: function fixBools(attrs) {
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var self = this;
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_.each(attrs, function each(value, key) {
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if (schema.tables[self.tableName].hasOwnProperty(key)
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&& schema.tables[self.tableName][key].type === 'bool') {
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attrs[key] = value ? true : false;
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}
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});
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return attrs;
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},
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// Get the user from the options object
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contextUser: function contextUser(options) {
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options = options || {};
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options.context = options.context || {};
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if (options.context.user || ghostBookshelf.Model.isExternalUser(options.context.user)) {
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return options.context.user;
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} else if (options.context.internal) {
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return ghostBookshelf.Model.internalUser;
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} else if (this.get('id')) {
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return this.get('id');
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} else if (options.context.external) {
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return ghostBookshelf.Model.externalUser;
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} else {
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throw new errors.NotFoundError({
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message: i18n.t('errors.models.base.index.missingContext'),
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level: 'critical'
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});
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}
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},
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// format date before writing to DB, bools work
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format: function format(attrs) {
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return this.fixDatesWhenSave(attrs);
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},
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// format data and bool when fetching from DB
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parse: function parse(attrs) {
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return this.fixBools(this.fixDatesWhenFetch(attrs));
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},
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toJSON: function toJSON(options) {
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var attrs = _.extend({}, this.attributes),
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self = this;
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options = options || {};
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options = _.pick(options, ['shallow', 'baseKey', 'include', 'context']);
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if (options && options.shallow) {
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return attrs;
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}
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if (options && options.include) {
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this.include = _.union(this.include, options.include);
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}
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_.each(this.relations, function each(relation, key) {
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if (key.substring(0, 7) !== '_pivot_') {
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// if include is set, expand to full object
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var fullKey = _.isEmpty(options.baseKey) ? key : options.baseKey + '.' + key;
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if (_.includes(self.include, fullKey)) {
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attrs[key] = relation.toJSON(_.extend({}, options, {baseKey: fullKey, include: self.include}));
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}
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}
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});
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// @TODO upgrade bookshelf & knex and use serialize & toJSON to do this in a neater way (see #6103)
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return proto.finalize.call(this, attrs);
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},
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// Get attributes that have been updated (values before a .save() call)
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updatedAttributes: function updatedAttributes() {
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return this._updatedAttributes || {};
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},
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// Get a specific updated attribute value
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updated: function updated(attr) {
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return this.updatedAttributes()[attr];
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},
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/**
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* There is difference between `updated` and `previous`:
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* Depending on the hook (before or after writing into the db), both fields have a different meaning.
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* e.g. onSaving -> before db write (has to use previous)
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* onUpdated -> after db write (has to use updated)
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*
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* hasDateChanged('attr', {beforeWrite: true})
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*/
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hasDateChanged: function (attr, options) {
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options = options || {};
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return moment(this.get(attr)).diff(moment(options.beforeWrite ? this.previous(attr) : this.updated(attr))) !== 0;
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},
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/**
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* we auto generate a GUID for each resource
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* no auto increment
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*/
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setId: function setId() {
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this.set('id', ObjectId.generate());
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}
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}, {
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// ## Data Utility Functions
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/**
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* please use these static definitions when comparing id's
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* we keep type Number, because we have too many check's where we rely on Number
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* context.user ? true : false (if context.user is 0 as number, this condition is false)
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*/
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internalUser: 1,
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externalUser: 0,
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isInternalUser: function isInternalUser(id) {
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return id === ghostBookshelf.Model.internalUser || id === ghostBookshelf.Model.internalUser.toString();
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},
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isExternalUser: function isExternalUser(id) {
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return id === ghostBookshelf.Model.externalUser || id === ghostBookshelf.Model.externalUser.toString();
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},
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/**
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* Returns an array of keys permitted in every method's `options` hash.
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* Can be overridden and added to by a model's `permittedOptions` method.
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*
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* importing: is used when import a JSON file or when migrating the database
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*
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* @return {Object} Keys allowed in the `options` hash of every model's method.
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*/
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permittedOptions: function permittedOptions() {
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// terms to whitelist for all methods.
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return ['context', 'include', 'transacting', 'importing'];
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},
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/**
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* Filters potentially unsafe model attributes, so you can pass them to Bookshelf / Knex.
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* This filter should be called before each insert/update operation.
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*
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* @param {Object} data Has keys representing the model's attributes/fields in the database.
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* @return {Object} The filtered results of the passed in data, containing only what's allowed in the schema.
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*/
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filterData: function filterData(data) {
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var permittedAttributes = this.prototype.permittedAttributes(),
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filteredData = _.pick(data, permittedAttributes),
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sanitizedData = this.sanitizeData(filteredData);
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return sanitizedData;
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},
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/**
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* `sanitizeData` ensures that client data is in the correct format for further operations.
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*
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* Dates:
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* - client dates are sent as ISO 8601 format (moment(..).format())
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* - server dates are in JS Date format
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* >> when bookshelf fetches data from the database, all dates are in JS Dates
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* >> see `parse`
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* - Bookshelf updates the model with the new client data via the `set` function
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* - Bookshelf uses a simple `isEqual` function from lodash to detect real changes
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* - .previous(attr) and .get(attr) returns false obviously
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* - internally we use our `hasDateChanged` if we have to compare previous/updated dates
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* - but Bookshelf is not in our control for this case
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*
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* @IMPORTANT
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* Before the new client data get's inserted again, the dates get's retransformed into
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* proper strings, see `format`.
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*/
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sanitizeData: function sanitizeData(data) {
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var tableName = _.result(this.prototype, 'tableName');
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_.each(data, function (value, key) {
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if (value !== null
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&& schema.tables[tableName].hasOwnProperty(key)
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&& schema.tables[tableName][key].type === 'dateTime'
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&& typeof value === 'string'
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) {
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data[key] = moment(value).toDate();
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}
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});
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return data;
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},
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/**
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* Filters potentially unsafe `options` in a model method's arguments, so you can pass them to Bookshelf / Knex.
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* @param {Object} options Represents options to filter in order to be passed to the Bookshelf query.
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* @param {String} methodName The name of the method to check valid options for.
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* @return {Object} The filtered results of `options`.
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*/
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filterOptions: function filterOptions(options, methodName) {
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var permittedOptions = this.permittedOptions(methodName, options),
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filteredOptions = _.pick(options, permittedOptions);
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return filteredOptions;
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},
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// ## Model Data Functions
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/**
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* ### Find All
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* Fetches all the data for a particular model
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* @param {Object} options (optional)
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* @return {Promise(ghostBookshelf.Collection)} Collection of all Models
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*/
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findAll: function findAll(options) {
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options = this.filterOptions(options, 'findAll');
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options.withRelated = _.union(options.withRelated, options.include);
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var itemCollection = this.forge(null, {context: options.context});
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// transforms fictive keywords like 'all' (status:all) into correct allowed values
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if (this.processOptions) {
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this.processOptions(options);
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}
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itemCollection.applyDefaultAndCustomFilters(options);
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return itemCollection.fetchAll(options).then(function then(result) {
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if (options.include) {
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_.each(result.models, function each(item) {
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item.include = options.include;
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});
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}
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return result;
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});
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},
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/**
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* ### Find Page
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* Find results by page - returns an object containing the
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* information about the request (page, limit), along with the
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* info needed for pagination (pages, total).
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*
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* **response:**
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*
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* {
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* posts: [
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* {...}, ...
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* ],
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* page: __,
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* limit: __,
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* pages: __,
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* total: __
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* }
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*
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* @param {Object} options
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*/
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findPage: function findPage(options) {
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options = options || {};
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var self = this,
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itemCollection = this.forge(null, {context: options.context}),
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tableName = _.result(this.prototype, 'tableName'),
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requestedColumns = options.columns;
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// Set this to true or pass ?debug=true as an API option to get output
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itemCollection.debug = options.debug && config.get('env') !== 'production';
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// Filter options so that only permitted ones remain
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options = this.filterOptions(options, 'findPage');
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// This applies default properties like 'staticPages' and 'status'
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// And then converts them to 'where' options... this behaviour is effectively deprecated in favour
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// of using filter - it's only be being kept here so that we can transition cleanly.
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this.processOptions(options);
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// Add Filter behaviour
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itemCollection.applyDefaultAndCustomFilters(options);
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// Handle related objects
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// TODO: this should just be done for all methods @ the API level
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options.withRelated = _.union(options.withRelated, options.include);
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// Ensure only valid fields/columns are added to query
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// and append default columns to fetch
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if (options.columns) {
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options.columns = _.intersection(options.columns, this.prototype.permittedAttributes());
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options.columns = _.union(options.columns, this.prototype.defaultColumnsToFetch());
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}
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if (options.order) {
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options.order = self.parseOrderOption(options.order, options.include);
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} else if (self.orderDefaultRaw) {
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options.orderRaw = self.orderDefaultRaw();
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} else {
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options.order = self.orderDefaultOptions();
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}
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return itemCollection.fetchPage(options).then(function formatResponse(response) {
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var data = {},
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models = [];
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options.columns = requestedColumns;
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models = response.collection.toJSON(options);
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// re-add any computed properties that were stripped out before the call to fetchPage
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// pick only requested before returning JSON
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data[tableName] = _.map(models, function transform(model) {
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return options.columns ? _.pick(model, options.columns) : model;
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});
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data.meta = {pagination: response.pagination};
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return data;
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});
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},
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/**
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* ### Find One
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* Naive find one where data determines what to match on
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* @param {Object} data
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* @param {Object} options (optional)
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* @return {Promise(ghostBookshelf.Model)} Single Model
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*/
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findOne: function findOne(data, options) {
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data = this.filterData(data);
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options = this.filterOptions(options, 'findOne');
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// We pass include to forge so that toJSON has access
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return this.forge(data, {include: options.include}).fetch(options);
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},
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/**
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* ### Edit
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* Naive edit
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*
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* We always forward the `method` option to Bookshelf, see http://bookshelfjs.org/#Model-instance-save.
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* Based on the `method` option Bookshelf and Ghost can determine if a query is an insert or an update.
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*
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* @param {Object} data
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* @param {Object} options (optional)
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* @return {Promise(ghostBookshelf.Model)} Edited Model
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*/
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edit: function edit(data, options) {
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var id = options.id,
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model = this.forge({id: id});
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data = this.filterData(data);
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options = this.filterOptions(options, 'edit');
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// We allow you to disable timestamps when run migration, so that the posts `updated_at` value is the same
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if (options.importing) {
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model.hasTimestamps = false;
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}
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return model.fetch(options).then(function then(object) {
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if (object) {
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return object.save(data, _.merge({method: 'update'}, options));
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}
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});
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},
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/**
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* ### Add
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* Naive add
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* @param {Object} data
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* @param {Object} options (optional)
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* @return {Promise(ghostBookshelf.Model)} Newly Added Model
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*/
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add: function add(data, options) {
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data = this.filterData(data);
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options = this.filterOptions(options, 'add');
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var model = this.forge(data);
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// We allow you to disable timestamps when importing posts so that the new posts `updated_at` value is the same
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// as the import json blob. More details refer to https://github.com/TryGhost/Ghost/issues/1696
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if (options.importing) {
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model.hasTimestamps = false;
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}
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// Bookshelf determines whether an operation is an update or an insert based on the id
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// Ghost auto-generates Object id's, so we need to tell Bookshelf here that we are inserting data
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options.method = 'insert';
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return model.save(null, options);
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},
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/**
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* ### Destroy
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* Naive destroy
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* @param {Object} options (optional)
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* @return {Promise(ghostBookshelf.Model)} Empty Model
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*/
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destroy: function destroy(options) {
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var id = options.id;
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options = this.filterOptions(options, 'destroy');
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// Fetch the object before destroying it, so that the changed data is available to events
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return this.forge({id: id}).fetch(options).then(function then(obj) {
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return obj.destroy(options);
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});
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},
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/**
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* ### Generate Slug
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* Create a string to act as the permalink for an object.
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* @param {ghostBookshelf.Model} Model Model type to generate a slug for
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* @param {String} base The string for which to generate a slug, usually a title or name
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* @param {Object} options Options to pass to findOne
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* @return {Promise(String)} Resolves to a unique slug string
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*/
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generateSlug: function generateSlug(Model, base, options) {
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var slug,
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slugTryCount = 1,
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baseName = Model.prototype.tableName.replace(/s$/, ''),
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// Look for a matching slug, append an incrementing number if so
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checkIfSlugExists, longSlug;
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checkIfSlugExists = function checkIfSlugExists(slugToFind) {
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var args = {slug: slugToFind};
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// status is needed for posts
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if (options && options.status) {
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args.status = options.status;
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}
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return Model.findOne(args, options).then(function then(found) {
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var trimSpace;
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if (!found) {
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return slugToFind;
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}
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slugTryCount += 1;
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// If we shortened, go back to the full version and try again
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if (slugTryCount === 2 && longSlug) {
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slugToFind = longSlug;
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longSlug = null;
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slugTryCount = 1;
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return checkIfSlugExists(slugToFind);
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}
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// If this is the first time through, add the hyphen
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if (slugTryCount === 2) {
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slugToFind += '-';
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} else {
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// Otherwise, trim the number off the end
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trimSpace = -(String(slugTryCount - 1).length);
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slugToFind = slugToFind.slice(0, trimSpace);
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}
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slugToFind += slugTryCount;
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return checkIfSlugExists(slugToFind);
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});
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};
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slug = utils.safeString(base, options);
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// If it's a user, let's try to cut it down (unless this is a human request)
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if (baseName === 'user' && options && options.shortSlug && slugTryCount === 1 && slug !== 'ghost-owner') {
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longSlug = slug;
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slug = (slug.indexOf('-') > -1) ? slug.substr(0, slug.indexOf('-')) : slug;
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}
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if (!_.has(options, 'importing') || !options.importing) {
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// This checks if the first character of a tag name is a #. If it is, this
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// is an internal tag, and as such we should add 'hash' to the beginning of the slug
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if (baseName === 'tag' && /^#/.test(base)) {
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slug = 'hash-' + slug;
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}
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}
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// Check the filtered slug doesn't match any of the reserved keywords
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return filters.doFilter('slug.reservedSlugs', config.get('slugs').reserved).then(function then(slugList) {
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// Some keywords cannot be changed
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slugList = _.union(slugList, utils.url.getProtectedSlugs());
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return _.includes(slugList, slug) ? slug + '-' + baseName : slug;
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}).then(function then(slug) {
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// if slug is empty after trimming use the model name
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if (!slug) {
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slug = baseName;
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}
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// Test for duplicate slugs.
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return checkIfSlugExists(slug);
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});
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},
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parseOrderOption: function (order, include) {
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var permittedAttributes, result, rules;
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permittedAttributes = this.prototype.permittedAttributes();
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if (include && include.indexOf('count.posts') > -1) {
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permittedAttributes.push('count.posts');
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}
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result = {};
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rules = order.split(',');
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_.each(rules, function (rule) {
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var match, field, direction;
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match = /^([a-z0-9_\.]+)\s+(asc|desc)$/i.exec(rule.trim());
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// invalid order syntax
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if (!match) {
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return;
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}
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field = match[1].toLowerCase();
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direction = match[2].toUpperCase();
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if (permittedAttributes.indexOf(field) === -1) {
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return;
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}
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result[field] = direction;
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});
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return result;
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}
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});
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// Export ghostBookshelf for use elsewhere
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module.exports = ghostBookshelf;
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