1. #1
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    Question Best Practice for custom component with multiple wrappers

    Best Practice for custom component with multiple wrappers


    hello, I am working to migrate my app from ext 3 to 4.x.

    One big question is that. In a lot of cases, our custom component has the following structures:

    ...

    initComponent: function(){
    // basic html rendering goes here
    this.tpl =new Ext.XTemplate( '<div class="wrapperClass1">,
    <div class="wrapperClass2">,
    <div class="wrapperClass3">,
    <div id="{id}-ctrl1"></div>
    <div id="{id}-ctrl2"></div>
    </div>
    </div>
    </div>'

    },


    render: function(){

    this.ctrl = Ext.create('ctrl1', {
    renderTo: "{id}-ctrl1"
    });

    this.ctr2 = Ext.create('ctrl2', {
    renderTo: "{id}-ctrl2"
    });

    }


    I wonder what is the best practice for create a component with layers of wrappers?


    Thanks

  2. #2
    Sencha - Senior Forum Manager mitchellsimoens's Avatar
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    I would actually mess with the renderTpl to create a DOM structure.
    Mitchell Simoens @SenchaMitch
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  3. #3
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    thanks.

    So the basic methodology is sound. And that is how a composite / complicated component should be strung together?

  4. #4
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    Using renderTpl on your prototype is ideal. The renderTpl is "upgraded" from array to XTemplate instance "in place". So if you have a renderTpl on your class prototype, it will become a proper XTemplate on your prototype (hence shared by all instances).

    For a good example of how intricate this can be, see how fields work in the source. They have a renderTpl which uses other templates even.
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  5. #5
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    thank you very much. This is a great answer.

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