Form Submission Problem with Fusebox

[Peter Jakobsson-2]

Hi Folks

Having make huge progress with my first Fusebox venture (and being quietly
blown away by the productivity gains of using the A4D framework) I came
unstuck with a form submission problem.

Active 4D is returning an error 500 when I submit the form with the POST
method. After the submission, the Action URL is left in the browser
address bar and if I re-request the URL (by hitting return in the address
bar) I don't get the 500.

I've closely followed the Active 4D demo (including using seting the
Action URL in the switch and accessing it with $XFA_onSubmit in the
display code) and tried various combinations of URLs but every single time
the POST gives me an error 500 (actually A4D Execute 4D Request) returns
this. The demo works fine on the same machine and version of Active4D.
(techniques/forms)

The Action URL looks like this: /index.a4d?fuseaction=query.run

There is a circuit called 'query' and a switch called #run'. I also tried
things like straight '/index.a4d/query/run' (since the demo appears to use
'techniques/forms' without the dot notation) with no success.

What am I missing ? I already scoured the archives and can't find anything
similar except a problem with port mapping using ipfw (which I am doing
since it's OS 10.5.7). But why then does the demo work fine ?

Other stuff I wouldn't mind knowing regarding the demo:

 - how does the 'techniques' circuit manage to determine the switch
('forms') when the form action uses a slash instead of a dot ?

 - when the $XFA_onSubmit assignment in the 'forms' switch (techniques
circuit) uses fusebox{fqfa}, shouldn't this return the dot notation
format ?

Any ideas much appreciated if I'm missing something obvious.

Regards

Peter


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[aparajita]

> The Action URL looks like this: /index.a4d?fuseaction=query.run

Just a wild guess...try changing the circuit name to something other  
than query.


> - how does the 'techniques' circuit manage to determine the switch
> ('forms') when the form action uses a slash instead of a dot ?

The demo is using an On Request event handler that transforms /circuit/
action into circuit.action. See Active4D.a4l.


> - when the $XFA_onSubmit assignment in the 'forms' switch (techniques
> circuit) uses fusebox{fqfa}, shouldn't this return the dot notation
> format ?

No, I installed a custom fusebox url factory. See the On Application  
Start method in Active4D.a4l.

Regards,

    Aparajita
    www.aparajitaworld.com

    "If you dare to fail, you are bound to succeed."
    - Sri Chinmoy   |   www.srichinmoy.org

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[Peter Jakobsson-2]

On 1 Sep 2009, at 19:31, Aparajita Fishman wrote:

> Just a wild guess...try changing the circuit name to something other  
> than query.

Tried this and same result - error 500. It doesn't even get as far as  
loading index.a4d.

When I inspect the request headers in 'On Web Connection' then seem ok  
and all the form variables are there but something must be wrong  
because 'A4D Execute Request' immediately throws the error. I will  
dump the full request header ($1, $2 etc) to the clipboard and compare  
it with the one in the demo to see if I can see any difference.


On 1 Sep 2009, at 19:31, Aparajita Fishman wrote:
> The demo is using an On Request event handler that transforms /
> circuit/action into circuit.action. See Active4D.a4l.

That explains it - thanks.

b.t.w. the demo is absolutely great for learning fusebox. I couldn't  
have got this far so fast without it and I'm seeing what a huge body  
of work the whole fusebox framework is just to make things easy for  
us. (It's kind of like discovering session management again).

No turning back now :)

Regards

Peter

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[aparajita]

> When I inspect the request headers in 'On Web Connection' then seem  
> ok and all the form variables are there but something must be wrong  
> because 'A4D Execute Request' immediately throws the error.

What version of 4D? You should be using 'A4D Execute 4D Request'. Did  
you modify On Web Connection?


> b.t.w. the demo is absolutely great for learning fusebox. I couldn't  
> have got this far so fast without it and I'm seeing what a huge body  
> of work the whole fusebox framework is just to make things easy for  
> us.

Once you "get" fusebox, development is 100x easier and you never want  
to go back.

Regards,

    Aparajita
    www.aparajitaworld.com

    "If you dare to fail, you are bound to succeed."
    - Sri Chinmoy   |   www.srichinmoy.org

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[Peter Jakobsson-2]

On 1 Sep 2009, at 20:29, Aparajita Fishman wrote:

> What version of 4D? You should be using 'A4D Execute 4D Request'.  
> Did you modify On Web Connection?

Sorry, I am indeed calling 'A4D Execute 4D Request' - just missed the  
'4D' out.

Peter

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[aparajita]

> When I inspect the request headers in 'On Web Connection' then seem  
> ok and all the form variables are there but something must be wrong  
> because 'A4D Execute Request' immediately throws the error. I will  
> dump the full request header ($1, $2 etc) to the clipboard and  
> compare it with the one in the demo to see if I can see any  
> difference.

Check Active4D.log, there should be an error message there. A 500  
status means the http server barfed somewhere, which should be logged.

Regards,

    Aparajita
    www.aparajitaworld.com

    "If you dare to fail, you are bound to succeed."
    - Sri Chinmoy   |   www.srichinmoy.org

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[Peter Jakobsson-2]

On 1 Sep 2009, at 22:56, Aparajita Fishman wrote:
> Check Active4D.log, there should be an error message there. A 500  
> status means the http server barfed somewhere, which should be logged.


Strangely, I've never seen any Active4D logging activity at all. There  
are no 'set log level' commands in my code (new and simple database).  
Neither does there appear to be any logging in the demo database. An  
OS level search for 'active4d.log or 'Active 4D Logs' (folder) doesn't  
return any results.

I tried setting 'log level=4' in Active4D.ini but still no folder or  
log appears when the error occurs.

Have I missed something 'duh' here ? I'll take another look.

Active 4D v4.5r1

Mac OS 10.5.7

Peter

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[Michael Check]

Peter, are you using apache in front of 4D?

Thanks,

Michael Check



On Tue, Sep 1, 2009 at 5:58 PM, Peter Jakobsson<lists@...> wrote:

> On 1 Sep 2009, at 22:56, Aparajita Fishman wrote:
>>
>> Check Active4D.log, there should be an error message there. A 500 status
>> means the http server barfed somewhere, which should be logged.
>
>
> Strangely, I've never seen any Active4D logging activity at all. There are
> no 'set log level' commands in my code (new and simple database). Neither
> does there appear to be any logging in the demo database. An OS level search
> for 'active4d.log or 'Active 4D Logs' (folder) doesn't return any results.
>
> I tried setting 'log level=4' in Active4D.ini but still no folder or log
> appears when the error occurs.
>
> Have I missed something 'duh' here ? I'll take another look.
>
> Active 4D v4.5r1
>
> Mac OS 10.5.7
>
> Peter
>
> _______________________________________________
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>

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[Darin Schroeder-2]

I recall having a form issue once that went away when I added
"enctype="multipart/form-data" within my form tag.

I might be way off, but I recall it causing me a headache. Worth a try though.

Darin

On Tue, Sep 1, 2009 at 8:14 PM, Michael Check<michaelr.check@...> wrote:

> Peter, are you using apache in front of 4D?
>
> Thanks,
>
> Michael Check
>
>
>
> On Tue, Sep 1, 2009 at 5:58 PM, Peter Jakobsson<lists@...> wrote:
>> On 1 Sep 2009, at 22:56, Aparajita Fishman wrote:
>>>
>>> Check Active4D.log, there should be an error message there. A 500 status
>>> means the http server barfed somewhere, which should be logged.
>>
>>
>> Strangely, I've never seen any Active4D logging activity at all. There are
>> no 'set log level' commands in my code (new and simple database). Neither
>> does there appear to be any logging in the demo database. An OS level search
>> for 'active4d.log or 'Active 4D Logs' (folder) doesn't return any results.
>>
>> I tried setting 'log level=4' in Active4D.ini but still no folder or log
>> appears when the error occurs.
>>
>> Have I missed something 'duh' here ? I'll take another look.
>>
>> Active 4D v4.5r1
>>
>> Mac OS 10.5.7
>>
>> Peter
>>
>> _______________________________________________
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>>
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[Peter Jakobsson-2]

On 2 Sep 2009, at 02:14, Michael Check wrote:

> Peter, are you using apache in front of 4D?

No - just raw 4D (standalone 2004.7) on my laptop. The Active 4D demo  
form submission works ok.


On 2 Sep 2009, at 05:35, Darin Schroeder wrote:
> I recall having a form issue once that went away when I added
> "enctype="multipart/form-data" within my form tag.

Thanks, I'll try that this morning.

I also need to find out how to turn the A4D logging on.

Peter

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[Peter Jakobsson-2]

I've got to the bottom of this problem - which turns out of course to be
my own code.

It relates to item 940 of the Active 4D release notes for version 4.5.

There appears to have a dependency on a 4D method called
'A4D_GetHttpBodyCallback'. My shell does not have this method and when I
create it, the form submission works again.

I couldn't determine in which part of the framework the dependency exists
- i.e. if it's the plugin or the framework scripts. I can't find any
reference in Active4D.ini or in any of the libraries. If it's the plugin,
it would be usefull to br sblr to specify it in an 'A4D Set HttpBody
Callback' type method so the plugin remains independent of the shell -
maybe this already exists but I couldn't find any reference to such a
command.

Many thanks in the meantime for all the usefull input on the thread !

Regards

Peter

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[aparajita]

> There appears to have a dependency on a 4D method called
> 'A4D_GetHttpBodyCallback'. My shell does not have this method and  
> when I
> create it, the form submission works again.

It is true that I did not document the purpose for this method, but I  
put methods in the shell for a good reason!


> it would be usefull to br sblr to specify it in an 'A4D Set HttpBody
> Callback' type method so the plugin remains independent of the shell -

The plugin cannot remain independent of the shell. The shell is the  
glue between 4D and the plugin.

Regards,

    Aparajita
    www.aparajitaworld.com

    "If you dare to fail, you are bound to succeed."
    - Sri Chinmoy   |   www.srichinmoy.org

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[Peter Jakobsson-2]

> The plugin cannot remain independent of the shell. The shell is the
> glue between 4D and the plugin.

I appreciate this, however, we've always been able to specify the names
far 4D method callbacks ('A4D Set Stream Callbacks').

I haven't used the A4D shells in their raw form for about 5 years and only
ever use them as a reference for how to call the plugin. This has never
been a problem since the plugin has (up till now) been independent of any
particular method naming in 4D. This makes it possible (for example) to
build real 4D components around the A4D plugin without conflicting with
any A4D library code.

It would be good if this level of independence could continue to be
supported (e.g. with a 'A4D_Set_httpBody_Callback' command).

Regards

Peter


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[aparajita]

> This makes it possible (for example) to
> build real 4D components around the A4D plugin without conflicting  
> with
> any A4D library code.

Point well taken. I'll add it in the v11 version.

Regards,

    Aparajita
    www.aparajitaworld.com

    "If you dare to fail, you are bound to succeed."
    - Sri Chinmoy   |   www.srichinmoy.org

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[Peter Jakobsson-2]

On 2 Sep 2009, at 19:09, Aparajita Fishman wrote:

> Point well taken. I'll add it in the v11 version.

That'll be great.

Thanks !

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[Michael Check]

Peter

Can you elaborate on this procedure?  Are you saying that the shell
methods do not need to be within 4D?  And they're called externally
somehow?

Thanks,

Michael Check



On Wed, Sep 2, 2009 at 11:36 AM, <lists@...> wrote:

>> The plugin cannot remain independent of the shell. The shell is the
>> glue between 4D and the plugin.
>
> I appreciate this, however, we've always been able to specify the names
> far 4D method callbacks ('A4D Set Stream Callbacks').
>
> I haven't used the A4D shells in their raw form for about 5 years and only
> ever use them as a reference for how to call the plugin. This has never
> been a problem since the plugin has (up till now) been independent of any
> particular method naming in 4D. This makes it possible (for example) to
> build real 4D components around the A4D plugin without conflicting with
> any A4D library code.
>
> It would be good if this level of independence could continue to be
> supported (e.g. with a 'A4D_Set_httpBody_Callback' command).
>
> Regards
>
> Peter
>
>
> _______________________________________________
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>

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[Peter Jakobsson-2]

On 2 Sep 2009, at 20:05, Michael Check wrote:

> Can you elaborate on this procedure?  Are you saying that the shell
> methods do not need to be within 4D?  And they're called externally
> somehow?

No - not at all. I'm just saying that if you want to write a custom  
shell (still in 4D code) instead of using the one supplied with A4D,  
you have always been able to do this because the plugin has allowed us  
to specify the 4D callback method names instead of having them hard  
coded (internally in the plugin).

Peter

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