Files
edx-platform/cms/static/js/certificates/collections/certificates.js
2018-12-19 10:22:06 -05:00

73 lines
2.4 KiB
JavaScript

// Backbone.js Application Collection: Certificates
define([
'backbone',
'gettext',
'js/certificates/models/certificate'
],
function(Backbone, gettext, Certificate) {
'use strict';
var CertificateCollection = Backbone.Collection.extend({
model: Certificate,
/**
* It represents the maximum number of certificates that a user can create. default set to 1.
*/
maxAllowed: 1,
initialize: function(attr, options) {
// Set up the attributes for this collection instance
this.url = options.certificateUrl;
this.bind('remove', this.onModelRemoved, this);
this.bind('add', this.onModelAdd, this);
},
certificateArray: function(certificateInfo) {
var returnArray;
try {
returnArray = JSON.parse(certificateInfo);
} catch (ex) {
// If it didn't parse, and `certificateInfo` is an object then return as it is
// otherwise return empty array
if (typeof certificateInfo === 'object') {
returnArray = certificateInfo;
} else {
returnArray = [];
}
}
return returnArray;
},
onModelRemoved: function() {
// remove the certificate web preview UI.
if (window.certWebPreview && this.length === 0) {
window.certWebPreview.remove();
}
this.toggleAddNewItemButtonState();
},
onModelAdd: function() {
this.toggleAddNewItemButtonState();
},
toggleAddNewItemButtonState: function() {
// user can create a new item e.g certificate; if not exceeded the maxAllowed limit.
if (this.length >= this.maxAllowed) {
$('.action-add').addClass('action-add-hidden');
} else {
$('.action-add').removeClass('action-add-hidden');
}
},
parse: function(certificatesJson) {
// Transforms the provided JSON into a Certificates collection
var modelArray = this.certificateArray(certificatesJson);
modelArray.forEach(function(item) {
this.push(item);
}, this);
return this.models;
}
});
return CertificateCollection;
});