mirror of
https://github.com/TryGhost/Ghost.git
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719 lines
28 KiB
JavaScript
719 lines
28 KiB
JavaScript
// # Post Model
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var _ = require('lodash'),
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uuid = require('uuid'),
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moment = require('moment'),
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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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legacyConverter = new Showdown.converter({extensions: ['ghostgfm', 'footnotes', 'highlight']}),
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Mobiledoc = require('mobiledoc-html-renderer').default,
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mobileDocOptions = require('ghost-editor').htmlOptions,
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converter = new Mobiledoc(mobileDocOptions),
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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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utils = require('../utils'),
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baseUtils = require('./base/utils'),
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i18n = require('../i18n'),
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Post,
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Posts;
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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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onSaved: function onSaved(model, response, options) {
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return this.updateTags(model, response, options);
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},
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onCreated: function onCreated(model) {
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var status = model.get('status');
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model.emitChange('added');
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if (['published', 'scheduled'].indexOf(status) !== -1) {
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model.emitChange(status);
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}
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},
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onUpdated: 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.isScheduled = model.get('status') === 'scheduled';
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model.wasPublished = model.updated('status') === 'published';
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model.wasScheduled = model.updated('status') === 'scheduled';
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model.resourceTypeChanging = model.get('page') !== model.updated('page');
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model.publishedAtHasChanged = model.hasDateChanged('published_at');
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model.needsReschedule = model.publishedAtHasChanged && model.isScheduled;
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// Handle added and deleted for post -> page or page -> post
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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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if (model.wasScheduled) {
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model.emitChange('unscheduled', 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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if (model.isScheduled) {
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model.emitChange('scheduled');
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}
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} else {
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if (model.statusChanging) {
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// CASE: was published before and is now e.q. draft or scheduled
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if (model.wasPublished) {
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model.emitChange('unpublished');
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}
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// CASE: was draft or scheduled before and is now e.q. published
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if (model.isPublished) {
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model.emitChange('published');
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}
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// CASE: was draft or published before and is now e.q. scheduled
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if (model.isScheduled) {
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model.emitChange('scheduled');
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}
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// CASE: from scheduled to something
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if (model.wasScheduled && !model.isScheduled && !model.isPublished) {
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model.emitChange('unscheduled');
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}
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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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if (model.needsReschedule) {
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model.emitChange('rescheduled');
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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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onDestroying: function onDestroying(model, options) {
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return model.load('tags', options)
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.then(function (response) {
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if (!response.related || !response.related('tags') || !response.related('tags').length) {
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return;
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}
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return Promise.mapSeries(response.related('tags').models, function (tag) {
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return baseUtils.tagUpdate.detachTagFromPost(model, tag, options)();
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});
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})
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.then(function () {
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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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onSaving: function onSaving(model, attr, options) {
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options = options || {};
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var self = this,
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title,
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i,
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// Variables to make the slug checking more readable
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newTitle = this.get('title'),
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newStatus = this.get('status'),
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olderStatus = this.previous('status'),
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prevTitle = this._previousAttributes.title,
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prevSlug = this._previousAttributes.slug,
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tagsToCheck = this.get('tags'),
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publishedAt = this.get('published_at'),
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publishedAtHasChanged = this.hasDateChanged('published_at'),
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mobiledoc = this.get('mobiledoc'),
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tags = [];
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// CASE: disallow published -> scheduled
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// @TODO: remove when we have versioning based on updated_at
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if (newStatus !== olderStatus && newStatus === 'scheduled' && olderStatus === 'published') {
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return Promise.reject(new errors.ValidationError({
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message: i18n.t('errors.models.post.isAlreadyPublished', {key: 'status'})
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}));
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}
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// CASE: both page and post can get scheduled
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if (newStatus === 'scheduled') {
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if (!publishedAt) {
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return Promise.reject(new errors.ValidationError({
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message: i18n.t('errors.models.post.valueCannotBeBlank', {key: 'published_at'})
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}));
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} else if (!moment(publishedAt).isValid()) {
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return Promise.reject(new errors.ValidationError({
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message: i18n.t('errors.models.post.valueCannotBeBlank', {key: 'published_at'})
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}));
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// CASE: to schedule/reschedule a post, a minimum diff of x minutes is needed (default configured is 2minutes)
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} else if (publishedAtHasChanged && moment(publishedAt).isBefore(moment().add(config.get('times').cannotScheduleAPostBeforeInMinutes, 'minutes'))) {
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return Promise.reject(new errors.ValidationError({
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message: i18n.t('errors.models.post.expectedPublishedAtInFuture', {
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cannotScheduleAPostBeforeInMinutes: config.get('times').cannotScheduleAPostBeforeInMinutes
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})
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}));
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}
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}
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// If we have a tags property passed in
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if (!_.isUndefined(tagsToCheck) && !_.isNull(tagsToCheck)) {
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// and deduplicate upper/lowercase tags
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_.each(tagsToCheck, function each(item) {
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for (i = 0; i < tags.length; i = i + 1) {
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if (tags[i].name.toLocaleLowerCase() === item.name.toLocaleLowerCase()) {
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return;
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}
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}
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tags.push(item);
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});
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// keep tags for 'saved' event
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this.tagsToSave = tags;
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}
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ghostBookshelf.Model.prototype.onSaving.call(this, model, attr, options);
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if (mobiledoc) {
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this.set('html', converter.render(JSON.parse(mobiledoc)).result);
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} else {
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// legacy showdown mode
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this.set('html', legacyConverter.makeHtml(_.toString(this.get('markdown'))));
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}
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// disabling sanitization until we can implement a better version
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title = this.get('title') || i18n.t('errors.models.post.untitled');
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this.set('title', _.toString(title).trim());
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// ### Business logic for published_at and published_by
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// If the current status is 'published' and published_at is not set, set it to now
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if (newStatus === 'published' && !publishedAt) {
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this.set('published_at', new Date());
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}
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// If the current status is 'published' and the status has just changed ensure published_by is set correctly
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if (newStatus === 'published' && this.hasChanged('status')) {
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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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} else {
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// In any other case (except import), `published_by` should not be changed
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if (this.hasChanged('published_by') && !options.importing) {
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this.set('published_by', this.previous('published_by'));
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}
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}
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// If a title is set, not the same as the old title, a draft post, and has never been published
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if (prevTitle !== undefined && newTitle !== prevTitle && newStatus === 'draft' && !publishedAt) {
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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('title'),
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{status: 'all', transacting: options.transacting, importing: options.importing})
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.then(function then(slug) {
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// After the new slug is found, do another generate for the old title to compare it to the old slug
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return ghostBookshelf.Model.generateSlug(Post, prevTitle).then(function then(prevTitleSlug) {
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// If the old slug is the same as the slug that was generated from the old title
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// then set a new slug. If it is not the same, means was set by the user
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if (prevTitleSlug === prevSlug) {
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self.set({slug: slug});
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}
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});
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});
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} else {
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// If any of the attributes above were false, set initial slug and check to see if slug was changed by the user
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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, importing: options.importing})
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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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},
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onCreating: function onCreating(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.onCreating.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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if (_.isUndefined(this.tagsToSave)) {
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// The tag property was not set, so we shouldn't be doing any playing with tags on this request
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return Promise.resolve();
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}
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var newTags = this.tagsToSave,
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TagModel = ghostBookshelf.model('Tag');
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options = options || {};
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function doTagUpdates(options) {
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return Promise.props({
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currentPost: baseUtils.tagUpdate.fetchCurrentPost(Post, savedModel.id, options),
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existingTags: baseUtils.tagUpdate.fetchMatchingTags(TagModel, newTags, options)
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}).then(function fetchedData(results) {
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var currentTags = results.currentPost.related('tags').toJSON(options),
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existingTags = results.existingTags ? results.existingTags.toJSON(options) : [],
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tagOps = [],
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tagsToRemove,
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tagsToCreate;
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if (baseUtils.tagUpdate.tagSetsAreEqual(newTags, currentTags)) {
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return;
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}
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// Tags from the current tag array which don't exist in the new tag array should be removed
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tagsToRemove = _.reject(currentTags, function (currentTag) {
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if (newTags.length === 0) {
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return false;
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}
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return _.some(newTags, function (newTag) {
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return baseUtils.tagUpdate.tagsAreEqual(currentTag, newTag);
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});
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});
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// Tags from the new tag array which don't exist in the DB should be created
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tagsToCreate = _.map(_.reject(newTags, function (newTag) {
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return _.some(existingTags, function (existingTag) {
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return baseUtils.tagUpdate.tagsAreEqual(existingTag, newTag);
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});
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}), 'name');
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// Remove any tags which don't exist anymore
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_.each(tagsToRemove, function (tag) {
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tagOps.push(baseUtils.tagUpdate.detachTagFromPost(savedModel, tag, options));
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});
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// Loop through the new tags and either add them, attach them, or update them
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_.each(newTags, function (newTag, index) {
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var tag;
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if (tagsToCreate.indexOf(newTag.name) > -1) {
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tagOps.push(baseUtils.tagUpdate.createTagThenAttachTagToPost(Post, TagModel, savedModel, newTag, index, options));
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} else {
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// try to find a tag on the current post which matches
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tag = _.find(currentTags, function (currentTag) {
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return baseUtils.tagUpdate.tagsAreEqual(currentTag, newTag);
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});
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if (tag) {
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tagOps.push(baseUtils.tagUpdate.updateTagOrderForPost(savedModel, tag, index, options));
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return;
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}
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// else finally, find the existing tag which matches
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tag = _.find(existingTags, function (existingTag) {
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return baseUtils.tagUpdate.tagsAreEqual(existingTag, newTag);
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});
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if (tag) {
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tagOps.push(baseUtils.tagUpdate.attachTagToPost(Post, savedModel.id, tag, index, options));
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}
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}
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});
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return sequence(tagOps);
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});
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}
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// Handle updating tags in a transaction, unless we're already in one
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if (options.transacting) {
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return doTagUpdates(options);
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} else {
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return ghostBookshelf.transaction(function (t) {
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options.transacting = t;
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return doTagUpdates(options);
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}).then(function () {
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// Don't do anything, the transaction processed ok
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}).catch(function failure(err) {
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return Promise.reject(new errors.GhostError({
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err: err,
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context: i18n.t('errors.models.post.tagUpdates.error'),
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help: i18n.t('errors.models.post.tagUpdates.help')
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}));
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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').withPivot('sort_order').query('orderBy', 'sort_order', 'ASC');
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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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defaultColumnsToFetch: function defaultColumnsToFetch() {
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return ['id', 'published_at', 'slug', 'author_id'];
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},
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toJSON: function toJSON(options) {
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options = options || {};
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var attrs = ghostBookshelf.Model.prototype.toJSON.call(this, options);
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if (!options.columns || (options.columns && options.columns.indexOf('author') > -1)) {
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attrs.author = attrs.author || attrs.author_id;
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delete attrs.author_id;
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}
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if (!options.columns || (options.columns && options.columns.indexOf('url') > -1)) {
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attrs.url = utils.url.urlPathForPost(attrs);
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}
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return attrs;
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},
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enforcedFilters: function enforcedFilters() {
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return this.isPublicContext() ? 'status:published' : null;
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},
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defaultFilters: function defaultFilters() {
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if (this.isInternalContext()) {
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return null;
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}
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return this.isPublicContext() ? 'page:false' : 'page:false+status:published';
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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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orderDefaultRaw: function () {
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return '' +
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'CASE WHEN posts.status = \'scheduled\' THEN 1 ' +
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'WHEN posts.status = \'draft\' THEN 2 ' +
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'ELSE 3 END ASC,' +
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'posts.published_at DESC,' +
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'posts.updated_at DESC,' +
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'posts.id DESC';
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},
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/**
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* @deprecated in favour of filter
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*/
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processOptions: function processOptions(options) {
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if (!options.staticPages && !options.status) {
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return options;
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}
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// This is the only place that 'options.where' is set now
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options.where = {statements: []};
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// Step 4: Setup filters (where clauses)
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if (options.staticPages && 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 = _.includes(['true', '1'], options.staticPages);
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}
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options.where.statements.push({prop: 'page', op: '=', value: options.staticPages});
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delete options.staticPages;
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} else if (options.staticPages === 'all') {
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options.where.statements.push({prop: 'page', op: 'IN', value: [true, false]});
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delete options.staticPages;
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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 && options.status !== 'all') {
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// make sure that status is valid
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options.status = _.includes(['published', 'draft', 'scheduled'], options.status) ? options.status : 'published';
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options.where.statements.push({prop: 'status', op: '=', value: options.status});
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delete options.status;
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} else if (options.status === 'all') {
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options.where.statements.push({prop: 'status', op: 'IN', value: ['published', 'draft', 'scheduled']});
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delete 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.
|
|
// these are the only options that can be passed to Bookshelf / Knex.
|
|
validOptions = {
|
|
findOne: ['columns', 'importing', 'withRelated', 'require'],
|
|
findPage: ['page', 'limit', 'columns', 'filter', 'order', 'status', 'staticPages'],
|
|
findAll: ['columns', 'filter']
|
|
};
|
|
|
|
if (validOptions[methodName]) {
|
|
options = options.concat(validOptions[methodName]);
|
|
}
|
|
|
|
return options;
|
|
},
|
|
|
|
/**
|
|
* Filters potentially unsafe model attributes, so you can pass them to Bookshelf / Knex.
|
|
* @param {Object} data Has keys representing the model's attributes/fields in the database.
|
|
* @return {Object} The filtered results of the passed in data, containing only what's allowed in the schema.
|
|
*/
|
|
filterData: function filterData(data) {
|
|
var permittedAttributes = this.prototype.permittedAttributes(),
|
|
filteredData;
|
|
|
|
// manually add 'tags' attribute since it's not in the schema
|
|
permittedAttributes.push('tags');
|
|
|
|
filteredData = _.pick(data, permittedAttributes);
|
|
|
|
return filteredData;
|
|
},
|
|
|
|
// ## Model Data Functions
|
|
|
|
/**
|
|
* ### Find One
|
|
* @extends ghostBookshelf.Model.findOne to handle post status
|
|
* **See:** [ghostBookshelf.Model.findOne](base.js.html#Find%20One)
|
|
*/
|
|
findOne: function findOne(data, options) {
|
|
options = options || {};
|
|
|
|
var withNext = _.includes(options.include, 'next'),
|
|
withPrev = _.includes(options.include, 'previous'),
|
|
nextRelations = _.transform(options.include, function (relations, include) {
|
|
if (include === 'next.tags') {
|
|
relations.push('tags');
|
|
} else if (include === 'next.author') {
|
|
relations.push('author');
|
|
}
|
|
}, []),
|
|
prevRelations = _.transform(options.include, function (relations, include) {
|
|
if (include === 'previous.tags') {
|
|
relations.push('tags');
|
|
} else if (include === 'previous.author') {
|
|
relations.push('author');
|
|
}
|
|
}, []);
|
|
|
|
data = _.defaults(data || {}, {
|
|
status: 'published'
|
|
});
|
|
|
|
if (data.status === 'all') {
|
|
delete data.status;
|
|
}
|
|
|
|
// Add related objects, excluding next and previous as they are not real db objects
|
|
options.withRelated = _.union(options.withRelated, _.pull(
|
|
[].concat(options.include),
|
|
'next', 'next.author', 'next.tags', 'previous', 'previous.author', 'previous.tags')
|
|
);
|
|
|
|
return ghostBookshelf.Model.findOne.call(this, data, options).then(function then(post) {
|
|
if ((withNext || withPrev) && post && !post.page) {
|
|
var publishedAt = moment(post.get('published_at')).format('YYYY-MM-DD HH:mm:ss'),
|
|
prev,
|
|
next;
|
|
|
|
if (withNext) {
|
|
next = Post.forge().query(function queryBuilder(qb) {
|
|
qb.where('status', '=', 'published')
|
|
.andWhere('page', '=', 0)
|
|
.andWhere('published_at', '>', publishedAt)
|
|
.orderBy('published_at', 'asc')
|
|
.limit(1);
|
|
}).fetch({withRelated: nextRelations});
|
|
}
|
|
|
|
if (withPrev) {
|
|
prev = Post.forge().query(function queryBuilder(qb) {
|
|
qb.where('status', '=', 'published')
|
|
.andWhere('page', '=', 0)
|
|
.andWhere('published_at', '<', publishedAt)
|
|
.orderBy('published_at', 'desc')
|
|
.limit(1);
|
|
}).fetch({withRelated: prevRelations});
|
|
}
|
|
|
|
return Promise.join(next, prev)
|
|
.then(function then(nextAndPrev) {
|
|
if (nextAndPrev[0]) {
|
|
post.relations.next = nextAndPrev[0];
|
|
}
|
|
if (nextAndPrev[1]) {
|
|
post.relations.previous = nextAndPrev[1];
|
|
}
|
|
return post;
|
|
});
|
|
}
|
|
|
|
return post;
|
|
});
|
|
},
|
|
|
|
/**
|
|
* ### Edit
|
|
* @extends ghostBookshelf.Model.edit to handle returning the full object and manage _updatedAttributes
|
|
* **See:** [ghostBookshelf.Model.edit](base.js.html#edit)
|
|
*/
|
|
edit: function edit(data, options) {
|
|
var self = this;
|
|
options = options || {};
|
|
|
|
return ghostBookshelf.Model.edit.call(this, data, options).then(function then(post) {
|
|
return self.findOne({status: 'all', id: options.id}, options)
|
|
.then(function then(found) {
|
|
if (found) {
|
|
// Pass along the updated attributes for checking status changes
|
|
found._updatedAttributes = post._updatedAttributes;
|
|
return found;
|
|
}
|
|
});
|
|
});
|
|
},
|
|
|
|
/**
|
|
* ### Add
|
|
* @extends ghostBookshelf.Model.add to handle returning the full object
|
|
* **See:** [ghostBookshelf.Model.add](base.js.html#add)
|
|
*/
|
|
add: function add(data, options) {
|
|
var self = this;
|
|
options = options || {};
|
|
|
|
return ghostBookshelf.Model.add.call(this, data, options).then(function then(post) {
|
|
return self.findOne({status: 'all', id: post.id}, options);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* ### destroyByAuthor
|
|
* @param {[type]} options has context and id. Context is the user doing the destroy, id is the user to destroy
|
|
*/
|
|
destroyByAuthor: Promise.method(function destroyByAuthor(options) {
|
|
var postCollection = Posts.forge(),
|
|
authorId = options.id;
|
|
|
|
options = this.filterOptions(options, 'destroyByAuthor');
|
|
|
|
if (!authorId) {
|
|
throw new errors.NotFoundError({message: i18n.t('errors.models.post.noUserFound')});
|
|
}
|
|
|
|
return postCollection
|
|
.query('where', 'author_id', '=', authorId)
|
|
.fetch(options)
|
|
.call('invokeThen', 'destroy', options)
|
|
.catch(function (err) {
|
|
return Promise.reject(new errors.GhostError({err: err}));
|
|
});
|
|
}),
|
|
|
|
permissible: function permissible(postModelOrId, action, context, loadedPermissions, hasUserPermission, hasAppPermission) {
|
|
var self = this,
|
|
postModel = postModelOrId,
|
|
origArgs;
|
|
|
|
// If we passed in an id instead of a model, get the model
|
|
// 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);
|
|
});
|
|
}
|
|
|
|
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(new errors.NoPermissionError({message: i18n.t('errors.models.post.notEnoughPermission')}));
|
|
}
|
|
});
|
|
|
|
Posts = ghostBookshelf.Collection.extend({
|
|
model: Post
|
|
});
|
|
|
|
module.exports = {
|
|
Post: ghostBookshelf.model('Post', Post),
|
|
Posts: ghostBookshelf.collection('Posts', Posts)
|
|
};
|