96 lines
3.3 KiB
JavaScript
96 lines
3.3 KiB
JavaScript
define(["backbone", "underscore", "js/models/chapter", "js/collections/chapter", "backbone.associations"],
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function(Backbone, _, 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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url: function() {
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if(this.isNew()) {
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return CMS.URL.TEXTBOOKS + "/new";
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} else {
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return CMS.URL.TEXTBOOKS + "/" + this.id;
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}
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},
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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: "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: "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: "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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