[Zope] how to catch the error message following the failed login via dtm l-try dtml-except

[Dylan Reinhardt]

First off, I wouldn't use AUTHENTICATED_USER, it's deprecated.

Second, DTML works a better if you test for the existence of a variable
rather than just trapping for its absence (unlike Python).

<dtml-if foo> tests not only for the *truth* of foo, but its existence.

I'd suggest the following:

--------

<dtml-if "_.SecurityGetUser().getUserName() != 'Anonymous User'">
   Restricted content / method goes here
<dtml-else>
   Sorry, this content is restricted
</dtml-if>

--------

More simply, you could also use permissions to restrict object usage to
Authenticated Users.

HTH,

Dylan


On Wed, 2003-06-11 at 08:07, Deniz, Metin wrote:
> Hello everybody,
> 
> I have the following problem:
> I have created a website which is generally accessible to everybody without
> the need to login(user = anonymous).
> Some areas of the site are reserved only to users who have an account in the
> acl users folders.
> When a user tries to access the restricted areas but does not have the right
> to or pushes the cancel button, then he gets the following error message:
> 
> Site Error
> An error was encountered while publishing this resource. 
> 
> Unauthorized
> 
> You are not authorized to access this resource. 
> 
> Traceback (innermost last):
>   File C:\Zope\lib\python\ZPublisher\Publish.py, line 150, in publish_module
>   File C:\Zope\lib\python\ZPublisher\Publish.py, line 114, in publish
>   File C:\Zope\lib\python\Zope\__init__.py, line 158, in
> zpublisher_exception_hook
>     (Object: logintest)
>   File C:\Zope\lib\python\ZPublisher\Publish.py, line 89, in publish
>   File C:\Zope\lib\python\ZPublisher\BaseRequest.py, line 404, in traverse
>   File C:\Zope\lib\python\ZPublisher\HTTPResponse.py, line 511, in
> unauthorized
> Unauthorized: (see above)
> 
> 
> Here is the example code which produces this error:
> 
> <dtml-var standard_html_header>
> <dtml-try>
>   User:  <dtml-var "AUTHENTICATED_USER.getUserName()">
> <dtml-except>
>   Failed to login  
> </dtml-try>
> <dtml-var standard_html_footer>
> 
> Unfortunatelly it does not work. Instead I just get the above error message.
> 
> Do you have any idea as how to do it?
> 
> 
> Regards,
> 
> 
> 
> Metin Deniz
> 
> _______________________________________________
> Zope maillist  -  Zope@zope.org
> http://mail.zope.org/mailman/listinfo/zope
> **   No cross posts or HTML encoding!  **
> (Related lists - 
>  http://mail.zope.org/mailman/listinfo/zope-announce
>  http://mail.zope.org/mailman/listinfo/zope-dev )