[Zope] Inserting headers and footers in response messages

[Nitin Borwankar]

Bruce Eckel wrote:
> 
> Inside an external method, I'm doing this:
> 
>         self.REQUEST.RESPONSE.setHeader('content-type',
> 'text/html')
>         return '''<dtml-var standard_html_header>
>            <h1 color="red">Invalid email address:
>            please press your browser's 'back' key and correct
> it</h1>
>            <dtml-var standard_html_footer>
>         '''
> 
> I'm not really surprised that standard_html_header and
> standard_html_footer aren't being expanded in the result, but I
> wonder if there's a way to do it?

Just guessing, but it would probably work if you did

         self.REQUEST.RESPONSE.setHeader('content-type',
           'text/html')
           return <dtml-var standard_html_header>
              + ''' <h1 color="red">Invalid email address:
             please press your browser's 'back' key and correct
             it</h1>'''
             + <dtml-var standard_html_footer>

i.e. quote only the <h1>...</h1> part but not the two <dtml-var..>'s.
I am guessing the quoting is preventing it from rendering.

I am guessing again that the <dtml-var ...> will render inside a return
statement just as it
does outside it in a plain DTML document or method.

Of course a Python script that does the needful ( ie invoke
context.standard_html_header() + <h1> ...</h1> +
context.standard_html_footer() )
could be written and then invoked from inside the return statement. 
This way it will render inside the Python script.
If you want to parametrise the method, pass in the <h1>...</h1> stuff as
a string parameter.  This will effectively give you a Python script that
puts the standard header/footer around any message you want.


Nitin Borwankar.
nitin@borwankar.com




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 Nitin Borwankar
 nitin@borwankar.com