79 lines
3.6 KiB
JavaScript
79 lines
3.6 KiB
JavaScript
define(["backbone", "underscore", "gettext"], function(Backbone, _, gettext) {
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var CourseGrader = Backbone.Model.extend({
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defaults: {
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"type" : "", // must be unique w/in collection (ie. w/in course)
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"min_count" : 1,
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"drop_count" : 0,
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"short_label" : "", // what to use in place of type if space is an issue
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"weight" : 0 // int 0..100
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},
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parse : function(attrs) {
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// round off values while converting them to integer
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if (attrs['weight']) {
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attrs.weight = Math.round(attrs.weight);
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}
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if (attrs['min_count']) {
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attrs.min_count = Math.round(attrs.min_count);
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}
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if (attrs['drop_count']) {
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attrs.drop_count = Math.round(attrs.drop_count);
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}
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return attrs;
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},
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validate : function(attrs) {
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var errors = {};
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if (_.has(attrs, 'type')) {
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if (_.isEmpty(attrs['type'])) {
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errors.type = "The assignment type must have a name.";
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}
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else {
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// FIXME somehow this.collection is unbound sometimes. I can't track down when
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var existing = this.collection && this.collection.some(function(other) { return (other.cid != this.cid) && (other.get('type') == attrs['type']);}, this);
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if (existing) {
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errors.type = gettext("There's already another assignment type with this name.");
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}
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}
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}
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if (_.has(attrs, 'weight')) {
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var intWeight = Math.round(attrs.weight); // see if this ensures value saved is int
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if (!isFinite(intWeight) || /\D+/.test(attrs.weight) || intWeight < 0 || intWeight > 100) {
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errors.weight = gettext("Please enter an integer between 0 and 100.");
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}
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else {
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attrs.weight = intWeight;
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if (this.collection && attrs.weight > 0) {
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// FIXME b/c saves don't update the models if validation fails, we should
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// either revert the field value to the one in the model and make them make room
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// or figure out a holistic way to balance the vals across the whole
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// if ((this.collection.sumWeights() + attrs.weight - this.get('weight')) > 100)
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// errors.weight = "The weights cannot add to more than 100.";
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}
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}}
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if (_.has(attrs, 'min_count')) {
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var intMinCount = Math.round(attrs.min_count);
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if (!isFinite(intMinCount) || /\D+/.test(attrs.min_count) || intMinCount < 1) {
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errors.min_count = gettext("Please enter an integer greater than 0.");
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}
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else attrs.min_count = intMinCount;
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}
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if (_.has(attrs, 'drop_count')) {
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var dropCount = attrs.drop_count;
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var intDropCount = Math.round(dropCount);
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if (!isFinite(intDropCount) || /\D+/.test(dropCount) || (_.isString(dropCount) && _.isEmpty(dropCount.trim())) || intDropCount < 0) {
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errors.drop_count = gettext("Please enter non-negative integer.");
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}
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else attrs.drop_count = intDropCount;
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}
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if (_.has(attrs, 'min_count') && _.has(attrs, 'drop_count') && !_.has(errors, 'min_count') && !_.has(errors, 'drop_count') && attrs.drop_count > attrs.min_count) {
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errors.drop_count = _.template(
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gettext("Cannot drop more <% attrs.types %> than will assigned."),
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attrs, {variable: 'attrs'});
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}
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if (!_.isEmpty(errors)) return errors;
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}
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});
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return CourseGrader;
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}); // end define()
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