title: Datatable requested unknown parameter '2' from data source row 0
body: <p>Hello I'm having issues trying to show data from my DB, I can show each data from the table in my DB but when I try to show all in a table it gives the error in the title, I don't know why. I'm using codeigniter.</p>
  
  <p>This is the controller function</p>
  
  <pre><code>public function datatable()
  {
  
      $this-&gt;datatables-&gt;select('name', 'user_id', 'last_name','identify','contact','rol_type')       
          -&gt;unset_column('user_id')
          -&gt;add_column('actions', get_buttons('$1','users'),'user_id')
          -&gt;from('users')
          -&gt;where(array('user_status'=&gt;'1'));
  
      echo $this-&gt;datatables-&gt;generate();
  
  }
  </code></pre>
  
  <p>User_id is an autoincrement variable.</p>
  
  <p>This is the view page.</p>
  
  <pre><code>&lt;?php
  //set table id in table open tag
      $tmpl = array ( 'table_open'  =&gt; '&lt;table id="big_table" border="1" cellpadding="2" cellspacing="1" class="mytable"&gt;' );
      $this-&gt;table-&gt;set_template($tmpl); 
  
      $this-&gt;table-&gt;set_heading('Name','Last Name','Identify Card','Contact Number','Rol assign,'Actions');
      echo $this-&gt;table-&gt;generate();
  ?&gt;
  &lt;script type="text/javascript"&gt;
  
    $(document).ready(function() {            
  
      var oTable = $('#big_table').dataTable( {
          "bProcessing": true,
          "bServerSide": true,
          "sAjaxSource": '&lt;?php echo base_url(); ?&gt;users/datatable',
                  "bJQueryUI": true,
                  "sPaginationType": "full_numbers",
                  "iDisplayStart ":20,
                  "oLanguage": {
                      "sUrl":'&lt;?php echo base_url(); ?&gt;users/translate'
          },
                  "fnInitComplete": function() {
                  //oTable.fnAdjustColumnSizing();
                      },
                  'fnServerData': function(sSource, aoData, fnCallback)
                      {
                          $.ajax
                          ({
                            'dataType': 'json',
                            'type'    : 'POST',
                            'url'     : sSource,
                            'data'    : aoData,
                            'success' : fnCallback
                          });
                      }
      } );
  
  } );
  
  &lt;/script&gt;
  </code></pre>
  
  <p>I use the datatable code for other functions on my program and it works, and even showing more than 4 data selected.</p>
  
  <p>The data I'm showing it has integer, and strings. </p>
  
  <p>Datatable version is 0.7</p>