How can Ext JS 4 handle the transmission of multiple metaData to support multiple dynamic grids by utilizing a single JSON file?

Looking to create multiple grids on a single panel using an accordion layout? I'll be dynamically generating all the grids based on metaData in JSON and handling metachange listener events on my store to reconfigure the grid. But here's the question - can I have one JSON file with metaData and data for multiple grids, allowing me to use separate stores to read from it?

Here's what I'm thinking:

"grid1" : 
{
"metaData" : {---"root":"data1"-----------}
},
"grid2" :
{
"metaData" : {----"root":"data2"----------}
},
"data1" : {------------------},
"data2" :  {-----------------}

I've tried using the metaProperty tag in my store without success (using ExtJs 4.1.3).

Store Proxy:

proxy: {
    type: 'ajax',
    url: 'MultiData.json',
    reader: {
        type: 'json'
      //  metaProperty : 'grid1', //Doesn't work, hence commented
    }

Store Listener:

'metachange': function (store, meta) { 
    Grid.reconfigure(store, meta.columns); 
}

NOTE: The above code functions fine with just one metaData and data tag in the JSON file.

Answer №1

Consider the following approach:

  1. Retrieve all necessary data with a single Ext.Ajax Call

  2. Divide the data into sections as needed.

  3. Utilize store.loadData() to directly load it into the store. This action should also activate the metachange listener and set up the grid accordingly. If this does not occur, you can use the configure() method of the grid: grid.reconfigure(store, columns)

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