J Query Pass Null value to the Controller

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hi every one
i get a jquery for the Auto completion textbox and following query only pass null values to the controller .if you could assist me on this matter that would be a great help!!!

input id="searchTerm" name="searchTerm1" type="text" />&nbsp;

     <script type="text/javascript">
         $(function () {
             $("#searchTerm").autocomplete({   
                 source: "/Home/AutocompleteSuggestions",
                 minLength: 1,
                 select: function (event, ol) {
                     if (ol.item) {
                         $("#searchTerm").val(ol.item.value);
                         $("form1").submit();
                     }
                 }
             });
         });
    </script>


//in controller class

 public JsonResult AutocompleteSuggestions(string ss)
        {
            var suggestions = selectEmployees.getEmployeeSuggestedNames(ss);
            return Json(suggestions, JsonRequestBehavior.AllowGet);
        }

Posted 7-Feb-13 16:48pm

Hesha

Updated 7-Feb-13 16:50pm

v3

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Hesha 8-Feb-13 3:02am

i just notice that the valueget from the textbox is always null.i dntknow why this is happening? controller signature is working fine.

1 solution

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Roberto Ferraris · Answer 1 · 2013-02-09T04:35:00

Solution 1

This happen because in your script you provide only the url of the action but don't provide any value for [ss].
You must use another syntax that allow providing [ss] value in remote call, for example using a function as source for autocomplete and an explicit JSON call to remote server:

JavaScript

source: function( request, response ) {

          $.getJSON( "/Home/AutocompleteSuggestions", {

            ss: request.term

          }, response );

        },

You can find more info on JQuery documentation about autocomplete and getJSON.

Posted 9-Feb-13 4:35am

Roberto Ferraris

Comments

Hesha 11-Feb-13 1:39am

Thanks dude. but it also passing a Null value to controller. can you bit explain the jquery? Thanks

Hesha 11-Feb-13 1:57am

This is the suggested function i used : but still it returning Null vale :)
<pre>

<script type="text/javascript">

source:(function (request, response ) {

$.getJSON( "/Home/AutocompleteSuggestions",{
ss: request.new1
},response);
minLength: 1,
select: function (event, ol) {
if (ol.item) {
$("#new1").val(ol.item.value);
$("form").submit();
}
}
});
});
</pre>

Roberto Ferraris 11-Feb-13 4:31am

Hi, I've provided only the source: part of javascritp. It is intended to replace
source: "/Home/AutocompleteSuggestions",
not all the settings, minLength and select must remain outside of source: part.

Hesha 11-Feb-13 5:05am

Now its ok dude. i changed controller signature para as (String "term")then its getting the j query values from the view. i dnt know how this is happening but if i change that to any other name for para it will not be working :)
Thanks a Lot dude!!!