Question

I’m using datatables along with Jquery Mobile (server Coldfusion8, MySQL 5.0.88) to display tabular data. While this works fine, I’m trying to integrate AJAX into the table, so whenever the user pages or filters, the database is queried again and updated.

Right now I’m trying to get it to work using this snippet

var userTable = $('#users).dataTable({
    "sAjaxSource": "path/to/handler.cfc?method=GetUsers",
    "aoColumns": [
        { "mDataProp": "id" , "sTitle": "ID"},
        { "mDataProp": "name" , "sTitle": "Name"},
        { "mDataProp": "surname" , "sTitle": "Surname"},
        { "mDataProp": "email" , "sTitle": "Email Address"}
      ]
    });

and inside CF:

<cffunction name="GetUsers" access="remote" output="false" returntype="any" returnformat="json"> 
    <cfquery name="local.qryUsers" datasource="dsn">
      SELECT id, name, surname, email FROM tblUsers
    </cfquery>

    <cfscript>
      local.strData = StructNew();
      local.strData['aaData'] = QueryToArray(local.qryCandidates);
      return local.strData;
     </cfscript>

</cffunction>

My problem is I need to modfiy some data from the query, for example I’m storing a column named status with values 1,2,3,4,5 and when I’m building the query results, I’m replacing the status number with the correct text in the correct language. Or I have a Jquery Mobile edit/delete controlgroup in every row, which I don’t have in the database.

Question:
Is there a way to add this to the query result returned from MySQL to Coldfusion = how can I (a) modifiy query results by looping over a column and replacing a number with some text (status) and (b) how can I add a full column to a query result (edit/delete) button, so I can then feed the whole thing into the AJAX response?

Thanks for help!

Answer 1

You can loop over the query and use QuerySetCell to modify contents of a column.

<cfloop query="local.qryUsers">
  <cfset QuerySetCell(local.qryUsers, "status", "your new value", local.qryUsers.currentRow)>
</cfloop>

You can use QueryAddColumn to add a column to a query.

<cfset QueryAddColumn(local.qryUsers, "yourNewColumnName", [1,2,3])>