90 lines
3.5 KiB
JavaScript
90 lines
3.5 KiB
JavaScript
define(['backbone', 'underscore', 'gettext', 'js/models/chapter', 'js/collections/chapter',
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'backbone.associations', 'cms/js/main'],
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function(Backbone, _, gettext, ChapterModel, ChapterCollection) {
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var Textbook = Backbone.AssociatedModel.extend({
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defaults: function() {
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return {
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name: '',
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chapters: new ChapterCollection([{}]),
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showChapters: false,
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editing: false
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};
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},
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relations: [{
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type: Backbone.Many,
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key: 'chapters',
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relatedModel: ChapterModel,
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collectionType: ChapterCollection
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}],
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initialize: function() {
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this.setOriginalAttributes();
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return this;
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},
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setOriginalAttributes: function() {
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this._originalAttributes = this.parse(this.toJSON());
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},
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reset: function() {
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this.set(this._originalAttributes, {parse: true});
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},
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isDirty: function() {
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return !_.isEqual(this._originalAttributes, this.parse(this.toJSON()));
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},
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isEmpty: function() {
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return !this.get('name') && this.get('chapters').isEmpty();
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},
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urlRoot: function() { return CMS.URL.TEXTBOOKS; },
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parse: function(response) {
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var ret = $.extend(true, {}, response);
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if ('tab_title' in ret && !('name' in ret)) {
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ret.name = ret.tab_title;
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delete ret.tab_title;
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}
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if ('url' in ret && !('chapters' in ret)) {
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ret.chapters = {'url': ret.url};
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delete ret.url;
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}
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_.each(ret.chapters, function(chapter, i) {
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chapter.order = chapter.order || i + 1;
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});
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return ret;
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},
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toJSON: function() {
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return {
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tab_title: this.get('name'),
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chapters: this.get('chapters').toJSON()
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};
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},
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// NOTE: validation functions should return non-internationalized error
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// messages. The messages will be passed through gettext in the template.
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validate: function(attrs, options) {
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if (!attrs.name) {
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return {
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message: gettext('Textbook name is required'),
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attributes: {name: true}
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};
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}
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if (attrs.chapters.length === 0) {
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return {
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message: gettext('Please add at least one chapter'),
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attributes: {chapters: true}
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};
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} else {
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// validate all chapters
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var invalidChapters = [];
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attrs.chapters.each(function(chapter) {
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if (!chapter.isValid()) {
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invalidChapters.push(chapter);
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}
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});
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if (!_.isEmpty(invalidChapters)) {
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return {
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message: gettext('All chapters must have a name and asset'),
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attributes: {chapters: invalidChapters}
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};
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}
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}
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}
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});
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return Textbook;
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});
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