Can a Batman.Set of Batman.Object types be observed for changes?

[andrew.c....@gmail.com]

Hi There

Say, we are given the following JSON data:

graphlist =
"graph1" :
"name" : "Graph 1"
"graph2" :
"name" : "Graph 2"

We then construct a Batman.Set of Batman.Objects in the following way:

a = new Batman.Set
for key, data of graphlist
a.add new Batman
"key" : key
"name" : data.name
"enabled" : true

Let's say we now save this in our controller. For example:

@set 'graphs', a

Now, in the (JADE driven) view, we can bind to an element

td(data-foreach-graph="controllers.graphcontroller.graphs")
input(type="checkbox",data-source="graph.enabled")

What if we wanted to observe any changes in the controller. I've tried adding this line to the controller ...

@observe 'graphs', (newVal, oldVal) ->
console.log "Value changed"

... and toggling the checkbox doesn't seem to trigger the callback.

Am I doing something wrong?

Thanks
Andrew

[andrew.c....@gmail.com]

Sorry, I noticed that I made a mistake in my explanation. The JADE view uses "data-bind", and not "data-source". Regardless of which one I use, the callback doesn't seem to work.

[Jeff Berg]

Andrew,

You are going to need to call @observe on each object because the callbacks don't bubble up. The callback on the collection will only change if an item is added or removed.

Jeff

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[andrew.c....@gmail.com]

Hi Jeff

Thanks so much! I made the change and it's working now.

For the benefit of others, here's a brief controller code snippet that worked for me:

@get('graphs').forEach (t) ->
t.observe 'enabled', (oldVal, newVal) ->
console.log "hi"

Cheers
Andrew