86 lines
3.5 KiB
JavaScript
86 lines
3.5 KiB
JavaScript
if (!CMS.Models['Settings']) CMS.Models.Settings = new Object();
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CMS.Models.Settings.CourseDetails = Backbone.Model.extend({
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defaults: {
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location : null, // the course's Location model, required
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start_date: null, // maps to 'start'
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end_date: null, // maps to 'end'
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enrollment_start: null,
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enrollment_end: null,
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syllabus: null,
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overview: "",
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intro_video: null,
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effort: null // an int or null
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},
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// When init'g from html script, ensure you pass {parse: true} as an option (2nd arg to reset)
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parse: function(attributes) {
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if (attributes['course_location']) {
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attributes.location = new CMS.Models.Location(attributes.course_location, {parse:true});
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}
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if (attributes['start_date']) {
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attributes.start_date = new Date(attributes.start_date);
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}
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if (attributes['end_date']) {
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attributes.end_date = new Date(attributes.end_date);
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}
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if (attributes['enrollment_start']) {
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attributes.enrollment_start = new Date(attributes.enrollment_start);
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}
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if (attributes['enrollment_end']) {
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attributes.enrollment_end = new Date(attributes.enrollment_end);
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}
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return attributes;
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},
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validate: function(newattrs) {
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// Returns either nothing (no return call) so that validate works or an object of {field: errorstring} pairs
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// A bit funny in that the video key validation is asynchronous; so, it won't stop the validation.
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var errors = {};
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if (newattrs.start_date && newattrs.end_date && newattrs.start_date >= newattrs.end_date) {
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errors.end_date = "The course end date cannot be before the course start date.";
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}
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if (newattrs.start_date && newattrs.enrollment_start && newattrs.start_date < newattrs.enrollment_start) {
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errors.enrollment_start = "The course start date cannot be before the enrollment start date.";
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}
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if (newattrs.enrollment_start && newattrs.enrollment_end && newattrs.enrollment_start >= newattrs.enrollment_end) {
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errors.enrollment_end = "The enrollment start date cannot be after the enrollment end date.";
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}
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if (newattrs.end_date && newattrs.enrollment_end && newattrs.end_date < newattrs.enrollment_end) {
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errors.enrollment_end = "The enrollment end date cannot be after the course end date.";
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}
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if (newattrs.intro_video && newattrs.intro_video !== this.get('intro_video')) {
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if (this._videokey_illegal_chars.exec(newattrs.intro_video)) {
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errors.intro_video = "Key should only contain letters, numbers, _, or -";
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}
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// TODO check if key points to a real video using google's youtube api
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}
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if (!_.isEmpty(errors)) return errors;
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// NOTE don't return empty errors as that will be interpreted as an error state
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},
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url: function() {
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var location = this.get('location');
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return '/' + location.get('org') + "/" + location.get('course') + '/settings/' + location.get('name') + '/section/details';
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},
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_videokey_illegal_chars : /[^a-zA-Z0-9_-]/g,
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save_videosource: function(newsource) {
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// newsource either is <video youtube="speed:key, *"/> or just the "speed:key, *" string
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// returns the videosource for the preview which iss the key whose speed is closest to 1
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if (_.isEmpty(newsource) && !_.isEmpty(this.get('intro_video'))) this.save({'intro_video': null},
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{ error : CMS.ServerError});
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// TODO remove all whitespace w/in string
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else {
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if (this.get('intro_video') !== newsource) this.save('intro_video', newsource,
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{ error : CMS.ServerError});
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}
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return this.videosourceSample();
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},
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videosourceSample : function() {
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if (this.has('intro_video')) return "http://www.youtube.com/embed/" + this.get('intro_video');
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else return "";
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}
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});
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