'active' class not added when Spine.js con

问题:

I have two very simple Spine.js controllers:

class ListController extends Spine.Controller
    className: 'list'
    constructor: () ->
        super

class DetailController extends Spine.Controller
    className: 'detail'
    constructor: () ->
        super

controller stack

class Application extends Spine.Stack
    className: 'mystack'
    controllers:
         list: ListController
         detail: DetailController

and corresponding HTML markup

<div class="mystack">
    <div class="list">list</div>
    <div class="detail">detail</div>
</div>

My problem is that when controller stack instantiated

app = new Application()
app.list.active()

there is no active class added to the div.list element. Divs remain unchanged.

What is wrong with that?

回答1:

I've just got it so I'll describe basic working example. There are several issues with the code above (caused by my misunderstanding of how Spine.js controller stack works :-)

First, appropriate HTML element have to be associated with every controller managed by the stack. When controller stack instantiates the controller it passes only stack (i.e. itself) instance as parameter to the constructor. So controller constructor have to take it into account (e.g. like the following):

class ListController extends Spine.Controller
    constructor: (parameters) ->
        @stack = parameters.stack
        @el = $ @stack.settings.listSelector
        super

class DetailController extends Spine.Controller
    constructor: (parameters) ->
        @stack = parameters.stack
        @el = $ @stack.settings.detailSelector
        super

and the stack:

class Application extends Spine.Stack
    settings:
        listSelector: '.list'
        detailSelector: '.detail'
    controllers:
        list: ListController
        detail: DetailController
    default:
        'list'

then the controller stack could be instantiated:

app = new Application
    el: $ '.mystack'

ListController will be active (i.e. corresponding div has active class added) by default and anytime later you can call @stack.detail.active() or @stack.list.active() from controller instance method to activate required controller and 'hide' (i.e. remove active class) the other(s).

EDIT: We discussed the issue with @aschmid00. In fact, controller constructor doesn't have to set its own property @stack manually. It is done automatically when base constructor called by super. But in case of this question @el have to be set before base constructor called due to the events delegation etc.