prevent ajax caching on .read()

[David A.]

Hi,
I am using the MVC helpers and ran into a problem with json data caching in ie.  I don't see a way to set caching = false with the fluent DropDownList helper.  Am I missing something with this?

My workaround is to tag my json methods with the following (courtesy of Zack at http://www.kendoui.com/forums/framework/data-source/read-without-cache.aspx)

[OutputCache(NoStore = true, Duration = 0, VaryByParam = "*")]

David A

[Georgi Krustev]

Hello David,

 
In general you cannot disable the cache through the fluent interface. Nevertheless it is sufficient to set the ServerFiltering to true in order to achieve your goal:

.DataSource(source => {
              source.Read(read =>
              {
                  read.Action("GetCascadeProducts", "ComboBox")
                      .Data("filterProducts");
              })
              .ServerFiltering(true);
          })

Check the CascadingDropDownList demo. Let me know if I am missing something.

Regards,
Georgi Krustev
the Telerik team

[Bubuy]

I am also running into the same problem.  I have cascading dropdownlist on kendo grid's popup editor.  I have tried both suggestions and it is still not working.  the caching problem happens when you switch from edit mode to create or vice-versa.

[Georgi Krustev]

Hello Arnold,

I answered the support ticket opened on the same subject. I will ask you to continue our conversation there in order to avoid any duplications. 

Greetings,
Georgi Krustev
the Telerik team

[michel]

Running into the same problem, but we don't want to change to ServerFiltering.
Disable of cache on Controller level does not fix the problem.

Any ideas to force the control to refresh it's items ?

[Justin]

You actually can prevent caching from the fluent interface. You just need to set the type to 'Post' for your read action.  ie -

.DataSource(source =>
 {
           source.Read(read =>
                   {
                           read.Action("ActionMethod", "Controller").Type(HttpVerbs.Post);
                    });
})

[michel]

Thanks, works like a charm.

[MarkSci]

This really helped me too Justin, thanks!

[Robert]

I realise this is an old thread, but as Kendo is built on jquery, you can switch off caching across the board by having this snippit either in a master page, or just on the pages that you want to disable caching on:

$.ajaxSetup ({
   // Disable caching of AJAX responses
   cache: false
});

[Jon]

Justin,

Your buried fix was exactly what I have been digging for also. Thanks!

[Dan]

ServerFiltering requires an actual filter.
Justin and Robert have working solution for non cascading DropDown 

 

[Jon]

The only way I have been able to solve this issue is to set the global ajax setup to have cache set to false.

Place this in your layout or a global js file

$(function () {

   $.ajaxSetup({
        cache:false,
    });

}

 

This will disable caching for all ajax calls

[Kiran]

Thank you David, It is working exactly

[Kiran]

Thank you Justin, nice tweak and it is also working :)