Fullcalendar, backbone.js, Cannot edit event - django

Question

So, I think I am in over my head here. I am trying to get fullcalendar to work with backbone and django. I am still learning all of this but I can now make new events and save them via django-tastypie, and they do show up in the calendar, wohoo! However, I can not edit or drag them. Uncaught TypeError: Cannot call method 'isNew' of undefined line 96, is what I get when events are clicked and Uncaught TypeError: Cannot call method 'save' of undefined line 78. I have done my best to figure this out, but no success. Why is this.model.isnew() undefined in render and the same for save? I do not fully understand all of this so I have probably made some stupid mistake somewhere or misunderstood how everything works. I would be grateful if anyone could give me a hint.
I added console.log(fcEvent); to eventClick, and when I inspect it, it says start and end dates are invalid. Does anyone know what that means? If I inspect the same object just after it was added with addOne, the dates are valid. I am also using https://github.com/PaulUithol/backbone-tastypie if that matters.
edit: Tried this to make sure events.fetch() succeeded, this resulted in no events in the calendar whatsoever. Does that mean that events.fetch() never succeeds? I can see "GET /api/event/ HTTP/1.1" 200 6079 in the log.
alternative fetch:
events.fetch({
success: function(){
new EventsView({el: $("#calendar"), collection: events}).render();
}});
Original program:
$(function(){
var Event = Backbone.Model.extend();
var Events = Backbone.Collection.extend({
model: Event,
url: '/api/event/'
});
var EventsView = Backbone.View.extend({
initialize: function(){
_.bindAll(this);
this.collection.bind('reset', this.addAll);
this.collection.bind('add', this.addOne);
this.collection.bind('change', this.change);
this.collection.bind('destroy', this.destroy);
this.eventView = new EventView();
},
render: function() {
this.$el.fullCalendar({
header: {
left: 'prev,next today',
center: 'title',
right: 'month,agendaWeek,basicDay'
},
selectable: true,
selectHelper: true,
editable: true,
ignoreTimezone: false,
disableResizing:false,
select: this.select,
defaultView: 'agendaWeek',
eventClick: this.eventClick,
eventDrop: this.eventDropOrResize,
eventResize: this.eventDropOrResize,
events: 'events'
});
},
addAll: function() {
this.$el.fullCalendar('addEventSource', this.collection.toJSON());
},
addOne: function(event) {
this.$el.fullCalendar('renderEvent', event.toJSON(), true);
},
select: function(start, end, allDay) {
var eventView = new EventView();
console.log('select');
eventView.collection = this.collection;
eventView.model = new Event({start: start, end: end, allDay: allDay});
eventView.render();
},
eventClick: function(fcEvent) {
console.log('click');
this.eventView.collection = this.collection;
this.eventView.model = this.collection.at(fcEvent.id);
console.log(fcEvent);
this.eventView.render();
},
change: function(event) {
// Look up the underlying event in the calendar and update its details from the model
var fcEvent = this.$el.fullCalendar('clientEvents', event.get('id'))[0];
fcEvent.title = event.get('title');
fcEvent.color = event.get('color');
console.log('change');
this.$el.fullCalendar('updateEvent', fcEvent);
},
eventDropOrResize: function(fcEvent) {
console.log(fcEvent);
// Lookup the model that has the ID of the event and update its attributes
this.eventView.collection.at(fcEvent.id).save({start: fcEvent.start, end: fcEvent.end});
},
destroy: function(event) {
this.$el.fullCalendar('removeEvents', event.id);
}
});
var EventView = Backbone.View.extend({
el: $('#eventDialog'),
initialize: function() {
_.bindAll(this);
},
render: function() {
var buttons = {'Ok': this.save};
if (!this.model.isNew()) {
_.extend(buttons, {'Delete': this.destroy});
}
_.extend(buttons, {'Cancel': this.close});
this.$el.dialog({
modal: true,
title: (this.model.isNew() ? 'New' : 'Edit') + ' Event',
buttons: buttons,
open: this.open
});
return this;
},
open: function() {
this.$('#title').val(this.model.get('title'));
this.$('#color').val(this.model.get('color'));
},
save: function() {
this.model.set({'title': this.$('#title').val(), 'color': this.$('#color').val(),});
console.log('save');
if (this.model.isNew()) {
this.collection.create(this.model, {success: this.close,wait: true });
} else {
this.model.save({}, {success: this.close});
}
},
close: function() {
this.$el.dialog('close');
},
destroy: function() {
this.model.destroy({success: this.close});
}
});
var events = new Events();
new EventsView({el: $("#calendar"), collection: events}).render();
events.fetch();
});

Answer 1

You can try this. The issue comes down to an undefined Model.
On this line.
select: function(start, end, allDay) {
var eventView = new EventView();
eventView.collection = this.collection;
eventView.model = new Event({start: start, end: end, allDay: allDay});
eventView.render();
},...
Change it to. I have a feeling that your Model is not being instantiated properly.
select: function(start, end, allDay) {
var eventView = new EventView({
collection: this.collection,
model: new Event({start: start, end: end, allDay: allDay})
});
eventView.render();
},
Another issue is, you're instantiating the EventsView and passing in the collection and models before the fetch call.
var events = new Events();
$.when(events.fetch()).then(function() {
// Create the Events view when the Events asynchronous operation completes.
new EventsView({el: $("#calendar"), collection: events}).render();
});
Edit: here's a JS Bin for additional changes.

Answer 2

I got this working except for events not actually disappearing from the calendar, even though they are deleted in the database. I dont know if this is the correct way to do this, probably not, but it worked. Model was undefined in EventView so I had to get the model from the collection and pass it on to EventView.
eventClick: function(fcEvent) {
console.log(fcEvent.id);
this.mymodel = this.collection.where({'id':fcEvent.id})[0];
this.eventView = new EventView({collection: this.collection, model: this.mymodel})
this.eventView.render();
},
change: function(event) {
// Look up the underlying event in the calendar and update its details from the model
var fcEvent = this.$el.fullCalendar('clientEvents', event.get('id'))[0];
fcEvent.title = event.get('title');
fcEvent.color = event.get('color');
console.log('change');
this.$el.fullCalendar('updateEvent', fcEvent);
},
eventDropOrResize: function(fcEvent) {
console.log(fcEvent);
// Lookup the model that has the ID of the event and update its attributes
this.collection.where({'id':fcEvent.id})[0].save({start: fcEvent.start, end: fcEvent.end});
},