Replies

• Scones Posts: 6Questions: 0Answers: 0

  July 2012

  Try:
  
  [code]
  "fnServerParams": function (aoData) {
  aoData.push({ "name": "procName", "value": "procGetAllContacts" });
  aoData.push({ "name": "parmsVals", "value": "" });
  aoData.push({ "name": "procType", "value": "Select" });
  },
  [/code]
  
  This is my understanding of how to send parameters.
• allan Posts: 63,397Questions: 1Answers: 10,451 Site admin

  July 2012

  Scones is absolutely correct - you need to use name/value pairs in fnServerParams - like what is used in my examples and shown in the documentation.
  
  > I have tried about every combination and I usually get a 200 error
  
  200 is not an error - it means HTTP OK. I presume you are getting an error from your application though. What is that error?
  
  > fnCallBack('{"sEcho":1,"iTotalRecords":20, ....
  
  This is never going to work for server-side processing. Server-side processing requires that the response from the server be dynamic. For example sEcho _must_ change on every request.
  
  Allan
• clint Posts: 15Questions: 0Answers: 0

  July 2012

  @Scones - That makes sense. I updated my code to look like this:
  
  [code]
  $('#ajaxTest').dataTable({
  "bJQueryUI": true,
  "bProcessing": true,
  "sPaginationType": "full_numbers",
  "iDisplayLength": 25,
  "sAjaxDataProp": "d",
  "sAjaxSource": "test.aspx/DoProc",
  "sServerMethod": "POST",
  "bServerSide": true,
  "fnServerData": function(sSource, aoData, fnCallBack) {
  $.ajax({
  "type": "POST",
  "url": sSource,
  "contentType": "application/json; charset=utf-8",
  "data": aoData,
  "dataType": 'json',
  "success": fnCallBack,
  "error": AjaxFailed
  });
  },
  "fnServerParams": function(aoData) {
  aoData.push({ "name": "procName", "value": "procGetAllContacts" });
  aoData.push({ "name": "parmsVals", "value": "" });
  aoData.push({ "name": "procType", "value": "Select" });
  },
  "aoColumns": [
  { "mDataProp": "ID" },
  { "mDataProp": "AddressID" },
  { "mDataProp": "ContactType" },
  { "mDataProp": "Code" },
  { "mDataProp": "FirstName" },
  { "mDataProp": "LastName" }
  ]
  });
  [/code]
  
  @allan - What should I put in fnCallBack? Nothing? Im confused on this.
  
  The above code gives me a 500 error:
  
  
  {"Message":"Invalid JSON primitive: sEcho.","StackTrace":" at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject()\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)\r\n at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)\r\n at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input)\r\n at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer)\r\n at System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.ArgumentException"}
  
  
  Thanks for the assistance!
• allan Posts: 63,397Questions: 1Answers: 10,451 Site admin

  July 2012

  > @allan - What should I put in fnCallBack? Nothing? Im confused on this.
  
  fnCallback is just a function reference. Doing:
  
  [code]
  "success": fnCallBack
  [/code]
  
  is the same as:
  
  [code]
  "success": function ( json ) {
  fnCallBack( json );
  }
  [/code]
  
  Just with two less lines of code :-)
  
  > The above code gives me a 500 error:
  
  Sounds like a server error if you are getting a 500 error. I'm not much of a .NET export so I can't help much, but it looks like it is trying to deseralise sEcho for some reason.
  
  Allan
• clint Posts: 15Questions: 0Answers: 0

  July 2012

  Well, the strange thing is that I can make this call and get json back. This will actually return the json without any errors...its just that Datatables is empty.
  
  [code]
  "fnServerData": function(sSource, aoData, fnCallBack) {
  $.ajax({
  "type": "POST",
  "url": sSource, //"test.aspx/DoProc",
  "contentType": "application/json; charset=utf-8",
  "data": '{"procName":"procGetAllContacts","parmsVals":"","procType":"Select"}',
  "dataFilter": function(data) {
  var msg = eval('(' + data + ')');
  },
  "error": AjaxFailed
  });
  },
  ...
  [/code]
  
  It returns this in the response.
  
  [code]
  {"d":"[{\"Code\":3,\"AddressID\":2,\"ContactType\":184,\
  
  ...
  }]"}
  
  [/code]
  
  It seems I am so close. I just cant get both the data to return and the datatables to work at the same time.
• timwilson Posts: 7Questions: 0Answers: 0

  November 2012

  I know this post is a few months old, but just in case someone else comes across it with similar issues, see this post where I explain similar issues with a resolution:
  
  http://datatables.net/forums/discussion/12601/passing-parameters-to-.ajax-asmx-web-service-using-post#Item_1