Question

I have form and grid. the user must enter data in form fields then display related records in the grid.

I want to implement a search form, e.g: user will type the name and gender of the student,
then will get a grid of all students have the same name and gender.

So, I use Ajax to send form fields value to PHP and then create a json_encode which will be used in grid store.

I am really not sure if my idea is good. But I haven’t found another way to do that.

The problem is there is a mistake in my store but I couldn’t figure out what it is. I get this error:
Uncaught TypeError: Cannot read property 'buffered' of undefined

My View:

{
  xtype: 'panel',
  layout: "fit",
  id: 'searchResult',
  flex: 7,
  title: '<div style="text-align:center;"/>SearchResultGrid</div>',
  items: [{
    xtype: 'gridpanel',
    store: 'advSearchStore',
    id: 'AdvSearch-grid',
    columns: [{
        xtype: 'gridcolumn',
        dataIndex: 'name',
        align: 'right',
        text: 'name'
      }, {
        xtype: 'gridcolumn',
        dataIndex: 'gender',
        align: 'right',
        text: 'gender'
      }
    ],
    viewConfig: {
      id: 'Arr',
      emptyText: 'noResult'
    },
    requires: ['MyApp.PrintSave_toolbar'],
    dockedItems: [{
      xtype: 'PrintSave_tb',
      dock: 'bottom',
    }]
  }]
}

My Controller:

.
.
.
xmlhttp.open("GET","AdvSearch.php?search_name="+search_name,true);
xmlhttp.send(null); 

My PHP script:

if (!$con) {
    throw new Exception("Error in connection to DB");
}

$query ="SELECT name, gender FROM students  WHERE name ILIKE '%$search_name%' ";
$result = pg_query($query); 

while ($row = pg_fetch_array($result)) {
   $Arr[] = array('name' => $row[0], 'gender' => $row[1]);
}

$searchResult_list = array();
$searchResult_list['success'] = true;
$searchResult_list['Arr'] = $Arr;

$searchResult_list['totalCount'] = count( $searchResult_list['Arr'] );

echo json_encode($searchResult_list); 

if (!$result) 
    die("Error in query: " . pg_last_error());

pg_close($con);

My Store, Model:

Ext.define('AdvSearchPost', {
  extend: 'Ext.data.Model',
  proxy: {
    type: 'ajax',
    url: 'AdvSearch.php',
    reader: {
      type: 'json',
      root: 'Arr',
      totalProperty: 'totalCount'
    }
  },
  fields: [{
      name: 'name'
    }, {
      name: 'type_and_cargo'
    }
  ]
});
advSearchStore = Ext.create('Ext.data.Store', {
  pageSize: 10,
  model: 'AdvSearchPost'
});

Answer 1

Well it is just a typo of your storename.

The error Uncaught TypeError: Cannot read property 'buffered' of undefinedonly indicates that the store could not be bound. It may be a bit misleading.

Try the grid with either

store: advSearchPost

or

store: Ext.StoreMgr.lookup('AdvSearchPost') // if in any form a controller takes care about your store 

and it will work.

Edit

I guess you haven’t any controller so I recommend you to create your store like this

Ext.create('Ext.data.Store', {
   pageSize: 10,
   model: 'AdvSearchPost',
   storeId: 'AdvSearchPost'
});

That will enable you to receive the store by the StoreManager from everywhere (after it is created). That will also enable the last statement to work without any controller.