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578 lines
20 KiB
JavaScript
578 lines
20 KiB
JavaScript
// # Post Model
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var _ = require('lodash'),
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uuid = require('node-uuid'),
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Promise = require('bluebird'),
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sequence = require('../utils/sequence'),
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errors = require('../errors'),
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Showdown = require('showdown-ghost'),
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converter = new Showdown.converter({extensions: ['ghostgfm', 'footnotes', 'highlight']}),
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ghostBookshelf = require('./base'),
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events = require('../events'),
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config = require('../config'),
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permalinkSetting = '',
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getPermalinkSetting,
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Post,
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Posts;
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// Stores model permalink format
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getPermalinkSetting = function getPermalinkSetting(model, attributes, options) {
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/*jshint unused:false*/
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// Transactions are used for bulk deletes and imports which don't need this anyway
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if (options.transacting) {
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return Promise.resolve();
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}
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return ghostBookshelf.model('Settings').findOne({key: 'permalinks'}).then(function then(response) {
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if (response) {
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response = response.toJSON(options);
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permalinkSetting = response.hasOwnProperty('value') ? response.value : '';
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}
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});
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};
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Post = ghostBookshelf.Model.extend({
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tableName: 'posts',
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emitChange: function emitChange(event, usePreviousResourceType) {
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var resourceType = this.get('page') ? 'page' : 'post';
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if (usePreviousResourceType) {
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resourceType = this.updated('page') ? 'page' : 'post';
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}
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events.emit(resourceType + '.' + event, this);
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},
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defaults: function defaults() {
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return {
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uuid: uuid.v4(),
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status: 'draft'
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};
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},
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initialize: function initialize() {
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var self = this;
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ghostBookshelf.Model.prototype.initialize.apply(this, arguments);
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this.on('saved', function onSaved(model, response, options) {
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return self.updateTags(model, response, options);
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});
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// Ensures local copy of permalink setting is kept up to date
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this.on('fetching', getPermalinkSetting);
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this.on('fetching:collection', getPermalinkSetting);
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this.on('created', function onCreated(model) {
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model.emitChange('added');
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if (model.get('status') === 'published') {
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model.emitChange('published');
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}
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});
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this.on('updated', function onUpdated(model) {
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model.statusChanging = model.get('status') !== model.updated('status');
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model.isPublished = model.get('status') === 'published';
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model.wasPublished = model.updated('status') === 'published';
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model.resourceTypeChanging = model.get('page') !== model.updated('page');
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// Handle added and deleted for changing resource
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if (model.resourceTypeChanging) {
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if (model.wasPublished) {
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model.emitChange('unpublished', true);
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}
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model.emitChange('deleted', true);
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model.emitChange('added');
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if (model.isPublished) {
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model.emitChange('published');
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}
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} else {
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if (model.statusChanging) {
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model.emitChange(model.isPublished ? 'published' : 'unpublished');
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} else {
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if (model.isPublished) {
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model.emitChange('published.edited');
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}
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}
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// Fire edited if this wasn't a change between resourceType
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model.emitChange('edited');
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}
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});
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this.on('destroyed', function onDestroyed(model) {
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if (model.previous('status') === 'published') {
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model.emitChange('unpublished');
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}
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model.emitChange('deleted');
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});
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},
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saving: function saving(model, attr, options) {
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var self = this,
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tagsToCheck,
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i;
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options = options || {};
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// keep tags for 'saved' event and deduplicate upper/lowercase tags
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tagsToCheck = this.get('tags');
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this.myTags = [];
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_.each(tagsToCheck, function each(item) {
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for (i = 0; i < self.myTags.length; i = i + 1) {
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if (self.myTags[i].name.toLocaleLowerCase() === item.name.toLocaleLowerCase()) {
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return;
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}
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}
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self.myTags.push(item);
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});
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ghostBookshelf.Model.prototype.saving.call(this, model, attr, options);
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this.set('html', converter.makeHtml(this.get('markdown')));
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// disabling sanitization until we can implement a better version
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// this.set('title', this.sanitize('title').trim());
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this.set('title', this.get('title').trim());
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if ((this.hasChanged('status') || !this.get('published_at')) && this.get('status') === 'published') {
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if (!this.get('published_at')) {
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this.set('published_at', new Date());
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}
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// unless published_by is set and we're importing, set published_by to contextUser
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if (!(this.get('published_by') && options.importing)) {
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this.set('published_by', this.contextUser(options));
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}
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}
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if (this.hasChanged('slug') || !this.get('slug')) {
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// Pass the new slug through the generator to strip illegal characters, detect duplicates
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return ghostBookshelf.Model.generateSlug(Post, this.get('slug') || this.get('title'),
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{status: 'all', transacting: options.transacting})
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.then(function then(slug) {
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self.set({slug: slug});
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});
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}
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},
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creating: function creating(model, attr, options) {
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options = options || {};
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// set any dynamic default properties
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if (!this.get('author_id')) {
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this.set('author_id', this.contextUser(options));
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}
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ghostBookshelf.Model.prototype.creating.call(this, model, attr, options);
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},
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/**
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* ### updateTags
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* Update tags that are attached to a post. Create any tags that don't already exist.
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* @param {Object} savedModel
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* @param {Object} response
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* @param {Object} options
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* @return {Promise(ghostBookshelf.Models.Post)} Updated Post model
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*/
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updateTags: function updateTags(savedModel, response, options) {
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var self = this;
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options = options || {};
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if (!this.myTags) {
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return;
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}
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return Post.forge({id: savedModel.id}).fetch({withRelated: ['tags'], transacting: options.transacting}).then(function then(post) {
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var tagOps = [];
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// remove all existing tags from the post
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// _.omit(options, 'query') is a fix for using bookshelf 0.6.8
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// (https://github.com/tgriesser/bookshelf/issues/294)
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tagOps.push(post.tags().detach(null, _.omit(options, 'query')));
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if (_.isEmpty(self.myTags)) {
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return Promise.all(tagOps);
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}
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return ghostBookshelf.collection('Tags').forge().query('whereIn', 'name', _.pluck(self.myTags, 'name')).fetch(options).then(function then(existingTags) {
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var doNotExist = [],
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sequenceTasks = [];
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existingTags = existingTags.toJSON(options);
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doNotExist = _.reject(self.myTags, function (tag) {
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return _.any(existingTags, function (existingTag) {
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return existingTag.name === tag.name;
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});
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});
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// Create tags that don't exist and attach to post
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_.each(doNotExist, function (tag) {
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var createAndAttachOperation = function createAndAttachOperation() {
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return ghostBookshelf.model('Tag').add({name: tag.name}, options).then(function then(createdTag) {
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// _.omit(options, 'query') is a fix for using bookshelf 0.6.8
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// (https://github.com/tgriesser/bookshelf/issues/294)
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return post.tags().attach(createdTag.id, _.omit(options, 'query'));
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});
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};
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sequenceTasks.push(createAndAttachOperation);
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});
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tagOps = tagOps.concat(sequence(sequenceTasks));
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// attach the tags that already existed
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_.each(existingTags, function (tag) {
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// _.omit(options, 'query') is a fix for using bookshelf 0.6.8
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// (https://github.com/tgriesser/bookshelf/issues/294)
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tagOps.push(post.tags().attach(tag.id, _.omit(options, 'query')));
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});
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return Promise.all(tagOps);
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});
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});
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},
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// Relations
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author: function author() {
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return this.belongsTo('User', 'author_id');
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},
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created_by: function createdBy() {
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return this.belongsTo('User', 'created_by');
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},
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updated_by: function updatedBy() {
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return this.belongsTo('User', 'updated_by');
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},
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published_by: function publishedBy() {
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return this.belongsTo('User', 'published_by');
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},
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tags: function tags() {
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return this.belongsToMany('Tag');
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},
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fields: function fields() {
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return this.morphMany('AppField', 'relatable');
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},
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toJSON: function toJSON(options) {
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var attrs = ghostBookshelf.Model.prototype.toJSON.call(this, options);
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attrs.author = attrs.author || attrs.author_id;
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attrs.url = config.urlPathForPost(attrs, permalinkSetting);
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delete attrs.author_id;
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return attrs;
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}
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}, {
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setupFilters: function setupFilters(options) {
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var filterObjects = {};
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// Deliberately switch from singular 'tag' to 'tags' and 'role' to 'roles' here
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// TODO: make this consistent
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if (options.tag !== undefined) {
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filterObjects.tags = ghostBookshelf.model('Tag').forge({slug: options.tag});
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}
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if (options.author !== undefined) {
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filterObjects.author = ghostBookshelf.model('User').forge({slug: options.author});
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}
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return filterObjects;
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},
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findPageDefaultOptions: function findPageDefaultOptions() {
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return {
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staticPages: false, // include static pages
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status: 'published',
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where: {}
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};
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},
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orderDefaultOptions: function orderDefaultOptions() {
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return {
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status: 'ASC',
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published_at: 'DESC',
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updated_at: 'DESC',
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id: 'DESC'
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};
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},
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processOptions: function processOptions(itemCollection, options) {
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// Step 4: Setup filters (where clauses)
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if (options.staticPages !== 'all') {
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// convert string true/false to boolean
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if (!_.isBoolean(options.staticPages)) {
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options.staticPages = _.contains(['true', '1'], options.staticPages);
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}
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options.where.page = options.staticPages;
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}
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if (_.has(options, 'featured')) {
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// convert string true/false to boolean
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if (!_.isBoolean(options.featured)) {
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options.featured = _.contains(['true', '1'], options.featured);
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}
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options.where.featured = options.featured;
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}
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// Unless `all` is passed as an option, filter on
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// the status provided.
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if (options.status !== 'all') {
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// make sure that status is valid
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options.status = _.contains(['published', 'draft'], options.status) ? options.status : 'published';
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options.where.status = options.status;
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}
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return options;
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},
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/**
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* Returns an array of keys permitted in a method's `options` hash, depending on the current method.
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* @param {String} methodName The name of the method to check valid options for.
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* @return {Array} Keys allowed in the `options` hash of the model's method.
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*/
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permittedOptions: function permittedOptions(methodName) {
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var options = ghostBookshelf.Model.permittedOptions(),
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// whitelists for the `options` hash argument on methods, by method name.
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// these are the only options that can be passed to Bookshelf / Knex.
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validOptions = {
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findAll: ['withRelated'],
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findOne: ['importing', 'withRelated'],
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findPage: ['page', 'limit', 'status', 'staticPages', 'featured'],
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add: ['importing']
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};
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if (validOptions[methodName]) {
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options = options.concat(validOptions[methodName]);
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}
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return options;
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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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* @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;
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// manually add 'tags' attribute since it's not in the schema
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permittedAttributes.push('tags');
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filteredData = _.pick(data, permittedAttributes);
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return filteredData;
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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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*
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* @param {Object} options
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* @returns {*}
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*/
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findAll: function findAll(options) {
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options = options || {};
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// fetch relations passed to options.include
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options.withRelated = _.union(options.withRelated, options.include);
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return ghostBookshelf.Model.findAll.call(this, options);
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},
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/**
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* ### Find One
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* @extends ghostBookshelf.Model.findOne to handle post status
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* **See:** [ghostBookshelf.Model.findOne](base.js.html#Find%20One)
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*/
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findOne: function findOne(data, options) {
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options = options || {};
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var withNext = _.contains(options.include, 'next'),
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withPrev = _.contains(options.include, 'previous');
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data = _.defaults(data || {}, {
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status: 'published'
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});
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if (data.status === 'all') {
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delete data.status;
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}
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// Add related objects, excluding next and previous as they are not real db objects
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options.withRelated = _.union(options.withRelated, _.pull([].concat(options.include), 'next', 'previous'));
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return ghostBookshelf.Model.findOne.call(this, data, options).then(function then(post) {
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if ((withNext || withPrev) && post && !post.page) {
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var publishedAt = post.get('published_at'),
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prev,
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next;
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if (withNext) {
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next = Post.forge().query(function queryBuilder(qb) {
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qb.where('status', '=', 'published')
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.andWhere('page', '=', 0)
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.andWhere('published_at', '>', publishedAt)
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.orderBy('published_at', 'asc')
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.limit(1);
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}).fetch();
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}
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if (withPrev) {
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prev = Post.forge().query(function queryBuilder(qb) {
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qb.where('status', '=', 'published')
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.andWhere('page', '=', 0)
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.andWhere('published_at', '<', publishedAt)
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.orderBy('published_at', 'desc')
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.limit(1);
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}).fetch();
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}
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return Promise.join(next, prev)
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.then(function then(nextAndPrev) {
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if (nextAndPrev[0]) {
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post.relations.next = nextAndPrev[0];
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}
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if (nextAndPrev[1]) {
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post.relations.previous = nextAndPrev[1];
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}
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return post;
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});
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}
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return post;
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});
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},
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/**
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* ### Edit
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* @extends ghostBookshelf.Model.edit to handle returning the full object and manage _updatedAttributes
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* **See:** [ghostBookshelf.Model.edit](base.js.html#edit)
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*/
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edit: function edit(data, options) {
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var self = this;
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options = options || {};
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return ghostBookshelf.Model.edit.call(this, data, options).then(function then(post) {
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return self.findOne({status: 'all', id: options.id}, options)
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.then(function then(found) {
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if (found) {
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// Pass along the updated attributes for checking status changes
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found._updatedAttributes = post._updatedAttributes;
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return found;
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}
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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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* @extends ghostBookshelf.Model.add to handle returning the full object
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* **See:** [ghostBookshelf.Model.add](base.js.html#add)
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*/
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add: function add(data, options) {
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var self = this;
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options = options || {};
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return ghostBookshelf.Model.add.call(this, data, options).then(function then(post) {
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return self.findOne({status: 'all', id: post.id}, options);
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});
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},
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/**
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* ### Destroy
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* @extends ghostBookshelf.Model.destroy to clean up tag relations
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* **See:** [ghostBookshelf.Model.destroy](base.js.html#destroy)
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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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return this.forge({id: id}).fetch({withRelated: ['tags']}).then(function destroyTags(post) {
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return post.related('tags').detach().then(function destroyPosts() {
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return post.destroy(options);
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});
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});
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},
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/**
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* ### destroyByAuthor
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* @param {[type]} options has context and id. Context is the user doing the destroy, id is the user to destroy
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*/
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destroyByAuthor: function destroyByAuthor(options) {
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var postCollection = Posts.forge(),
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authorId = options.id;
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options = this.filterOptions(options, 'destroyByAuthor');
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if (authorId) {
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return postCollection.query('where', 'author_id', '=', authorId).fetch(options).then(function destroyTags(results) {
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return Promise.map(results.models, function mapper(post) {
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return post.related('tags').detach(null, options).then(function destroyPosts() {
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return post.destroy(options);
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});
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});
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}, function (error) {
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return Promise.reject(new errors.InternalServerError(error.message || error));
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});
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}
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return Promise.reject(new errors.NotFoundError('No user found'));
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},
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permissible: function permissible(postModelOrId, action, context, loadedPermissions, hasUserPermission, hasAppPermission) {
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var self = this,
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postModel = postModelOrId,
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origArgs;
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// If we passed in an id instead of a model, get the model
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// then check the permissions
|
|
if (_.isNumber(postModelOrId) || _.isString(postModelOrId)) {
|
|
// Grab the original args without the first one
|
|
origArgs = _.toArray(arguments).slice(1);
|
|
// Get the actual post model
|
|
return this.findOne({id: postModelOrId, status: 'all'}).then(function then(foundPostModel) {
|
|
// Build up the original args but substitute with actual model
|
|
var newArgs = [foundPostModel].concat(origArgs);
|
|
|
|
return self.permissible.apply(self, newArgs);
|
|
}, errors.logAndThrowError);
|
|
}
|
|
|
|
if (postModel) {
|
|
// If this is the author of the post, allow it.
|
|
hasUserPermission = hasUserPermission || context.user === postModel.get('author_id');
|
|
}
|
|
|
|
if (hasUserPermission && hasAppPermission) {
|
|
return Promise.resolve();
|
|
}
|
|
|
|
return Promise.reject();
|
|
}
|
|
});
|
|
|
|
Posts = ghostBookshelf.Collection.extend({
|
|
model: Post,
|
|
|
|
initialize: function initialize() {
|
|
ghostBookshelf.Collection.prototype.initialize.apply(this, arguments);
|
|
|
|
// Ensures local copy of permalink setting is kept up to date
|
|
this.on('fetching', getPermalinkSetting);
|
|
}
|
|
});
|
|
|
|
module.exports = {
|
|
Post: ghostBookshelf.model('Post', Post),
|
|
Posts: ghostBookshelf.collection('Posts', Posts)
|
|
};
|