title: ExtJS 4.1.1: Working with a TreeGrid/TreeStore
body: <p>I am having some problems with my code that I hoped you could help me with as I've kind of hit a wall.</p>
  
  <p>I have a field in a Tree grid that has the following properties:</p>
  
  <pre><code>    xtype : 'gridcolumn',
      id : 'raGridFormulaLink_Purchased',
      dataIndex: 'formulaLink',
      groupable : false,
      editor : {
          xtype: 'textfield'
      },      
      renderer: function(value, metaData, record, rowIndex, colIndex, store) {
          var rVal; var linkRec;
          if(value !== '' &amp;&amp; value !== 0) {
              /* TODO Find linked Record based on ['child_id' =&gt; value] 
               * and print that record's [text] to rVal */
              rVal = Ext.local.langstore[448] + ' ' + value;
          }
          return rVal;
      },
      align: 'left',
      width: 100
  </code></pre>
  
  <p>As  you can see I am trying to do a simple HLOOKUP to find the linked record. But I am unable to get the proper record from the store. How can I do this? </p>
  
  <p>The value has the right "child_id", so it's not the input that's wrong.</p>
  
  <p>Any help appreciated,</p>
  
  <p>GR.</p>