Re: Wicket.Event.subscribe - how to get a response header

[Martin Grigorov]

On Mon, Apr 2, 2018 at 3:53 PM, Entropy  wrote:

> Actually, yes, on some of our pages.  That might explain it.  So then in
> that
> case, how would I add a request header or check a response header from the
> server?
>

As far as I know you cannot read the response headers from request made
with IFrame.
In Wicket 8.x this IFrame has been removed and now it uses Ajax APIs to
upload files, so it should always pass non-null jqXHR. But you are on
Wicket 6.x ...


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Re: Wicket.Event.subscribe - how to get a response header

[Entropy]

Actually, yes, on some of our pages.  That might explain it.  So then in that
case, how would I add a request header or check a response header from the
server?

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Re: Wicket.Event.subscribe - how to get a response header

[Sven Meier]

Are you trying to submit a multipart form via Ajax?

Wicket uses an iframe for that case and jqXHR is will be null in case of 
a failure.


Have fun
Sven


Am 30.03.2018 um 16:36 schrieb Entropy:

Okay, but I am at a breakpoint and it definitely is null.  This is in chrome
and IE11.  We use jQuery v1.12.4 if that makes a difference (I don't think
it does).  I'm sure I must be doing something to cause the issue, but I've
no idea what.

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Re: Wicket.Event.subscribe - how to get a response header

[Entropy]

Okay, but I am at a breakpoint and it definitely is null.  This is in chrome
and IE11.  We use jQuery v1.12.4 if that makes a difference (I don't think
it does).  I'm sure I must be doing something to cause the issue, but I've
no idea what.

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Re: Wicket.Event.subscribe - how to get a response header

[Sven Meier]

Hi,

we have a unit test for that. Here's the line for Wicket 6:

https://github.com/apache/wicket/blob/548e1c090bc67d2e36308beaca9243b48aaaf613/wicket-core/src/test/js/ajax.js#L564

Sven


Am 30.03.2018 um 01:20 schrieb Entropy:

For some reason, jqXHR is null when I run subscribe a failure listener.  It's
the third parameter, correct?

function onFailure(jqEvent, attributes, jqXHR, errorThrown, textStatus) {
var value = jqXHR.getResponseHeader('myHeader');
if('true' == value)
//do something
}

Wicket.Event.subscribe('/ajax/call/failure', onFailure);



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Re: Wicket.Event.subscribe - how to get a response header

[Entropy]

For some reason, jqXHR is null when I run subscribe a failure listener.  It's
the third parameter, correct?

function onFailure(jqEvent, attributes, jqXHR, errorThrown, textStatus) {
var value = jqXHR.getResponseHeader('myHeader');
if('true' == value) 
//do something
}

Wicket.Event.subscribe('/ajax/call/failure', onFailure);



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Re: Wicket.Event.subscribe - how to get a response header

[Sven Meier]

jqXHR.getResponseHeader("Foo");

Have fun
Sven

Am 26. März 2018 14:23:32 MESZ schrieb Entropy :
>I've defined a javascript event handler using Wicket.Event.subscribe. 
>How
>would I get a response header in that callback?  According to docs I
>saw,
>the parameters are: attrs, jqXHR, textStatus, jqEvent, errorThrown.  I
>set a
>breakpoint and inspected each and didn't see a response header
>collection
>that was obvious to me.  
>
>This is Wicket 6.
>
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Wicket.Event.subscribe - how to get a response header

[Entropy]

I've defined a javascript event handler using Wicket.Event.subscribe.  How
would I get a response header in that callback?  According to docs I saw,
the parameters are: attrs, jqXHR, textStatus, jqEvent, errorThrown.  I set a
breakpoint and inspected each and didn't see a response header collection
that was obvious to me.  

This is Wicket 6.

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