DirectEvents and WebApi json request call

[Pyropace]

Hi I am trying to make a post to a webapi control in a MVC application using DirectEvents on a button as below

     <ext:FormPanel 
            ID="FormPanel1" 
            runat="server" 
            Title="Process" 
            Icon="ServerStart"
            BodyPadding="6">
            <Items>
                <ext:DateField  
                    ID="txtDate" 
                    runat="server" 
                    FieldLabel="Run Date" 
                    IndicatorIcon="Date"
                    Anchor="-5"
                    SelectedDate=""
                    Format="dd-MM-yyyy"
                    InvalidText= "Invalid Format. dd-MM-yyyy"
                    IndicatorTip="Choose execution date"
                    />
             </Items>
         <BottomBar>
             <ext:Toolbar runat="server">
                 <Items>
                    <ext:Button runat="server" Icon="LightningGo" Text="Run" Region="West">
                        <Listeners>
                            <Click Handler="
                                if (!#{txtDate}.validate()) {
                                    Ext.Msg.alert('Error','All fields are both required');
                                    return false; 
                                }" />
                        </Listeners>
                        <DirectEvents>
                            <Click Url="~/api/Process/PostStart" Timeout="60000" Method="POST" Json="True" Success="Ext.Msg.show({title: 'Server Status',msg: result,buttons: Ext.Msg.OK,icon: Ext.MessageBox.INFO});">
                                <Confirmation ConfirmRequest="true" Title="Please Confirm" Message="Start workflow process?" />
                            </Click>
                        </DirectEvents>
                    </ext:Button>
                </Items>
             </ext:Toolbar>
         </BottomBar>
     </ext:FormPanel>

as you see i have set Json=True in Click Tag, however the header request still has xml in it



content type has "application/json" but i think since Accept parameter has application/xhtml+xml it is getting ignored by webapi engine and thus xml is returned instead of json,



any help with this is greatly appreciated

update http://blogs.msdn.com/b/kiranchalla/...ta-part-1.aspx

f a Request message is sent with an Accept header and also a Content-Type header, Conneg algorithm will use the Accept header to decide about the Response media type and the MediaTypeFormatter to write.
This should make sense to you as here the Client is asking for a Response in a specific format.

Example:

Request:

POST http://kirandev10:9090/DefaultConNeg...Tests/PostData HTTP/1.1
Accept: application/xml
Content-Type: application/json
Host: kirandev10:9090
Content-Length: 7
Expect: 100-continue
Connection: Keep-Alive

thank you

[Vladimir]

Json="true" sets Content-Type only, as you see it equals 'application/json'
Also Accept contains '*/*' which means all media types

Therefore the issue is related with your server side logic. Can you post server side code which handles the request?

[Pyropace]

Json="true" sets Content-Type only, as you see it equals 'application/json'
Also Accept contains '*/*' which means all media types

Therefore the issue is related with your server side logic. Can you post server side code which handles the request?

Hi Vladimir,

Thanks for your reply, how did you come to the conclusion as it is the server issue ? As i posted in the quote above , if both content and accept are sent via the header, the webapi will go with Accept parameters

I guess the question would be , how would you clear accept parameters when you work with DirectEvents

I however have posted the webapi backend code for you , it is responding fine , the problem is just that the response is in xml and not json, but webapi will look at header request to decide what format it should use in response, so the problem is Jason=true will need to modify Header Accept options as well

   public class ProcessController : ApiController
    {
        #region Public Methods and Operators

         public LogModel PostStart()
        {
            return new LogModel();
        }

        #endregion

here is what is a screenshot of what is returned

[Vladimir]

Well, may be Accept header has a priority over Content-Type in WebAPI (but JSON web service works fine with Content-Type, https://examples2.ext.net/#/Events/D...ds/WebService/)

If it is true then i can suggest to add Accept header manually (via CustomConfig of direct event)

<ext:ConfigItem Name="headers" Value="{Accept:'application/json'}" Mode="Raw" />

or use HttpResponseMessage with 'application/json' media type on the server side

We will change it in 2.1 release (Accept will be set also, not Content-Type also )

[Pyropace]

Great thank you for your reply