Hi Martin,
Is it possible to return a value from the ajax behavior while responding to
the ajax call?
I'm trying to do something like this in the server side:
target.appendJavaScript("foo");
>
And then try to use it in my JavaScript:
var foo = Wicket.Ajax.get({ u: window.callbackUrl });
> //do some processing with foo
>
Is this valid? Or is there a better way?
On Wed, Jan 18, 2017 at 5:26 PM, James Selvakumar <[email protected]>
wrote:
> Thanks a lot Martin. You're right. I had something else in my code and
> after I fixed it, I managed to make a ajax call from JavaScript.
>
> On Wed, Jan 18, 2017 at 5:07 PM, Martin Grigorov <[email protected]>
> wrote:
>
>> There is no variable named 'a' in your code snippet.
>> It might be another problem.
>>
>> Martin Grigorov
>> Wicket Training and Consulting
>> https://twitter.com/mtgrigorov
>>
>> On Wed, Jan 18, 2017 at 10:04 AM, James Selvakumar <[email protected]>
>> wrote:
>>
>> > Hi Martin,
>> >
>> > I tried your suggestion but I'm still getting the same TypeError.
>> >
>> > On Wed, Jan 18, 2017 at 4:55 PM, James Selvakumar <[email protected]>
>> > wrote:
>> >
>> > > Thanks Martin for the super fast reply. I'll try that out.
>> > >
>> > > On Wed, Jan 18, 2017 at 4:54 PM, Martin Grigorov <
>> [email protected]>
>> > > wrote:
>> > >
>> > >> var wcall = Wicket.Ajax.get({ u: '${callbackUrl}'});
>> > >> should be
>> > >> var wcall = Wicket.Ajax.get({ u: window.callbackUrl });
>> > >>
>> > >> Martin Grigorov
>> > >> Wicket Training and Consulting
>> > >> https://twitter.com/mtgrigorov
>> > >>
>> > >> On Wed, Jan 18, 2017 at 9:51 AM, James Selvakumar <
>> [email protected]>
>> > >> wrote:
>> > >>
>> > >> > Dear Wicket team,
>> > >> >
>> > >> > I need to make a call to a Wicket page from my JavaScript function.
>> > >> > I followed the guide Calling Wicket from Javascript
>> > >> > <https://cwiki.apache.org/confluence/display/WICKET/
>> > >> > Calling+Wicket+from+Javascript>
>> > >> > and managed to define an ajax behavior to respond to the JavaScript
>> > >> call.
>> > >> >
>> > >> > My ajax behavior looks like this:
>> > >> >
>> > >> > > private final AbstractDefaultAjaxBehavior behave = new
>> > >> > AbstractDefaultAjaxBehavior()
>> > >> > > {
>> > >> > > protected void respond(final AjaxRequestTarget target)
>> > >> > > {
>> > >> > > LOGGER.debug("Received a request from client to get the
>> > >> > encryption key");
>> > >> > > target.add(new Label("foo", "Yeah I was just called from
>> > >> > Javascript!"));
>> > >> > > }
>> > >> > >
>> > >> > > public void renderHead(Component component, IHeaderResponse
>> > >> response)
>> > >> > > {
>> > >> > > super.renderHead(component, response);
>> > >> > > String callbackUrl = getCallbackUrl().toString();
>> > >> > > response.render(JavaScriptHeaderItem.forScript("var
>> > >> > callbackUrl='" + callbackUrl + "';", "values"));
>> > >> > > }
>> > >> > > };
>> > >> > >
>> > >> > > This callback url got rendered in the page like this:
>> > >> >
>> > >> > <script id="values" type="text/javascript">
>> > >> > > /*<![CDATA[*/
>> > >> > > var callbackUrl='./wicket/page?0-1.IBehaviorListener.0-';
>> > >> > > /*]]>*/
>> > >> > > </script>
>> > >> > >
>> > >> >
>> > >> >
>> > >> > And here is my JavaScript code:
>> > >> >
>> > >> > > var wcall = Wicket.Ajax.get({ u: '${callbackUrl}'});
>> > >> > > alert(wcall);
>> > >> > >
>> > >> > > But I'm getting the following error in the Wicket Ajax Debug
>> Window:
>> > >> >
>> > >> > *An error occurred while executing Ajax request:TypeError: a is
>> > >> undefined*
>> > >> > >
>> > >> >
>> > >> > Can someone point out what's the mistake here?
>> > >> >
>> > >> > --
>> > >> > Thanks & regards
>> > >> > James
>> > >> >
>> > >>
>> > >
>> > >
>> > >
>> > > --
>> > > Thanks & regards
>> > > James Selvakumar
>> > >
>> >
>> >
>> >
>> > --
>> > Thanks & regards
>> > James
>> >
>>
>
>
>
> --
> Thanks & regards
> James
>
--
Thanks & regards
James
