0

如果我有一个控制器:

HTH.todosController = SC.ArrayProxy.create({
  content: HTH.store.find(HTH.Todo)
});

我可以显示所有这样做的待办事项:

...
<script type="text/x-handlebars">
  {{#collection contentBinding="HTH.todosController"}}
    {{content}}
  {{/collection}}
</script>
...

但是我将如何显示来自视图的具有特定 ID 的待办事项?

...
<script type="text/x-handlebars">
  {{#view contentBinding="HTH.todosController.specific" specificId="1"}}
    {{content}}
  {{/view}}
</script>
...
4

2 回答 2

1

您是否正在考虑 CRUD 样式的主/详细信息工作流程?

如果你是,这里是我刚刚为 SC2 中的 CRUD 操作编写 的一系列教程。

基本上,我将双击处理程序附加到触发状态图操作以在模式对话框中显示详细信息的表行。

CollectionView : SC.CollectionView.extend({
contentBinding: 'App.resultsController',

itemViewClass: SC.View.extend({
  tagName: 'tr',

  // Spit out the content's index in the array proxy as an attribute of the tr element
  attributeBindings: ['contentIndex'],

  willInsertElement: function() {
    this._super();

    // Add handler for double clicking
    var id = this.$().attr('id');
    this.$().dblclick(function() {
      App.statechart.sendAction('showUser', $('#' + this.id).attr('contentIndex'));
    });
  }
})

本教程的第 4 部分展示了我是如何做到这一点的。

希望这可以帮助。

于 2011-11-07T04:34:23.647 回答
1

这是jsfiddle 中的一个解决方案,允许您在视图的把手定义中定义待办事项的特定 id,就像您在示例中一样。这有点粗糙,但它有效。

车把:

<script type="text/x-handlebars">
{{view App.SpecificIdWrapper}}
<hr />
{{#collection App.TodosView contentBinding="App.todosController"}}
    {{content.name}}
{{/collection}}
<hr />
{{view App.SelectedToDoView}}
</script>

<script type="text/x-handlebars" data-template-name="specificId">
{{#view App.SpecificIdView dataBinding="App.todosController.content" specificId=3}}
    Specific Todo Id: {{content.id}}
    <br />
    Specific Todo Name: {{content.name}}
{{/view}}
</script>

<script type="text/x-handlebars" data-template-name="selectedToDo">
{{#view contentBinding="App.todosController.selectedToDo.content"}}
  Selected Todo Id: {{content.id}}
{{/view}}

JavaScript:

App = Ember.Application.create();

App.SpecificIdWrapper = Ember.View.extend({
    templateName: 'specificId'
});

App.SpecificIdView = Ember.View.extend({
content: null,
data: null,
specificId: null,

_getTodoById: function() {
    var data = this.get('data'); 
    if(data) {
        for(var i=0;i<data.length;i++) {
            if(data[i].get('id') === this.get('specificId')) {
                this.set('content', data[i]);
                break;
            }
        }
    }
},

// This will make sure the content is set when the view is rendered
didInsertElement: function() {
    this._getTodoById();
},
// And this will update the content whenever specificId is changed
specificIdDidChange: function() {
    this._getTodoById();
}.observes('specificId')
});

App.SelectedToDoView = Ember.View.extend({
    templateName: 'selectedToDo'
});

App.TodosView = Ember.CollectionView.extend({
itemViewClass: Ember.View.extend({
    click: function() {
        App.todosController.set('selectedToDo', this);
    }
})
});

App.todosController = Ember.ArrayController.create({
content: [
    Ember.Object.create({id: 1, name: "obj1"}),
    Ember.Object.create({id: 2, name: "obj2"}),
    Ember.Object.create({id: 3, name: "obj3"}),
    Ember.Object.create({id: 4, name: "obj4"}),
    Ember.Object.create({id: 5, name: "obj5"}),
    Ember.Object.create({id: 6, name: "obj6"})
],
selectedToDo: null
});
于 2011-12-20T08:16:46.313 回答