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POEscape square brackets in ExtJS template markup (XTemplate)?
 

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  1. POEscape square brackets in ExtJS template markup (XTemplate)?
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    <p>I'm using ExtJS 4 and have a need to use sets of square brackets within XTemplate markup. This need arises from the fact that I require the square brackets to be preserved in the rendered output. More specifically, I'm dealing with object properties that contain a dash (minus sign) in their names, which requires one to use square brackets to access those properties' values in JavaScript, e.g.:</p> <p><code>raw.cmsInstances[\'cms-thumb\'].url</code></p> <p>Anyone who has worked with CSS in JavaScript has encountered this issue with dashes in CSS property names.</p> <p>I haven't been able to find an alternate syntax (to the square bracket notation) that achieves the same result.</p> <p>I have worked-around this limitation using an ExtJS custom object type. In particular, I am accessing ExtDirect's raw input and pushing values therefrom into the template markup using the following technique:</p> <pre><code>Ext.define('my.ux.file.IconBrowser', { tpl: [ '&lt;tpl for="."&gt;', //Am trying to use this notation, due to dash in property name: //'&lt;img src="{raw.cmsInstances[\'cms-thumb\'].url}"/&gt;' //But this causes XTemplate to evaluate whatever is between the square //brackets. (!Ext.isIE6? '&lt;img src="{raw.cmsInstances.cmsThumb.url}"/&gt;' : '&lt;div style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'{raw.cmsInstances.cmsThumb.url}\')"&gt;&lt;/div&gt;'), '&lt;/tpl&gt;' ], initComponent: function() { Ext.data.Types.RAW = { convert: function(v, data) { return data.raw; }, type: 'Raw' }; var types = Ext.data.Types; this.store = Ext.create('Ext.data.Store', { proxy: { type: 'direct', directFn: this.loadLibraryApi, paramOrder: ['instanceType'], reader: { root: 'data' } }, fields: [ {name: 'raw', type: types.RAW} ] }); this.callParent(arguments); } }); </code></pre> <p>I would much prefer to escape the square brackets or find an alternative to them that achieves the same result.</p> <p>Thanks in advance!</p>
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    1. USBen Johnson
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    1. COThe problem is not in escaping, it's just XTemplate doesn't support this object notation at the moment. I've opened a feature request ticket for this.
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      1. POEscape square brackets in ExtJS template markup (XTemplate)?
      1. USAlex Tokarev
    2. COThanks, Alex. Are you able to provide a URL to the request that you opened?
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      1. POEscape square brackets in ExtJS template markup (XTemplate)?
      1. USBen Johnson
    3. COUnfortunately we don't have public access to our bug tracker at the moment so I can't give you the URL.
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      1. POEscape square brackets in ExtJS template markup (XTemplate)?
      1. USAlex Tokarev
 

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