On Wed, Jan 18, 2017 at 10:35 AM, James Selvakumar <ja...@mcruncher.com>
wrote:
> 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 });
>
.get() makes an Ajax call, so it doesn't return a value
You can use the callback methods (complete, success, failure) to get the
returned response from the server
But I think you don't need to use 'foo' from the server as a variable.
You really need: target.appendJavaScript("doNextStep(foo)")
I.e. execute something else once the Ajax call returns
> > //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 <ja...@mcruncher.com>
> 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 <mgrigo...@apache.org>
> > 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 <ja...@mcruncher.com
> >
> >> 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 <
> ja...@mcruncher.com>
> >> > wrote:
> >> >
> >> > > Thanks Martin for the super fast reply. I'll try that out.
> >> > >
> >> > > On Wed, Jan 18, 2017 at 4:54 PM, Martin Grigorov <
> >> mgrigo...@apache.org>
> >> > > 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 <
> >> ja...@mcruncher.com>
> >> > >> 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
>
