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POExtJS: share store between grid and chart
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  1. POExtJS: share store between grid and chart
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    copied!<p>I'm writing a simple application storing and displaying timestamped messages. Messages are JSON objects containing, say 2 main fields like:</p> <pre><code>{ "emitted": "2011-12-08 12:00:00", "message": "This is message #666" } </code></pre> <p>I have a model to describe these messages:</p> <pre><code>Ext.define('Message', { extend: 'Ext.data.Model', fields: [ { name: 'emitted', type: 'date' }, { name: 'message', type: 'string' } ] }); </code></pre> <p>I have no problem displaying these messages in a grid. However, i would now like to display these messages in a chart. For instance, I would be able to grab numbers (like the #666 in the above example) and display a line chart.</p> <p>Ideally, i don't want to create a new store for the chart, i would like to reuse the same message store, but apply a filter on the fields to grab the proper value. I don't know, something that might look like:</p> <pre><code>var chart = { xtype: 'chart', ... series: [{ type: 'line', axis: ['left', 'bottom'], xField: 'emitted', yField: {fieldName:'message', fieldGrabber: function(v) { new RegExp("This is message #(\d+)$", "g").exec(v)[1] }} }] }; </code></pre> <p>Does this kind of thing is possible in ExtJS ? I just tried to explain what I'm trying to do, i have no idea where to find such a feature: in the chart class, in the store class, or using a kind pf proxy to the store.</p> <p>Side note: I cannot ask the data to be properly formatted to the server. The messages I receive are not backed up anywhere, they are just live events streamed to the client via socketIO.</p> <p>Any advices greatly appreciated!</p>
 

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