[albatross-users] impedance mismatch 1

[Matt Goodall]

Thanks for that correction! Now I understand globals as well :)

On Wed, 2003-07-02 at 01:44, Gregory Bond wrote:
> One wrinkle on all this:
> 
> >       * "environ" when inside the template refers to the same dictionary
> >         as "ctx.locals.environ" in the python code.
> 
> ... and if ctx.locals.environ doesn't exist, then it looks for environ in the
> global context of the _page display function_.  So you can do something like:
> 
> ----
> my_heading = 'Super Application'
> 
> class StartPage:
> 	# ...
> 	def page_display(self, ctx):
> 		ctx.run_template('start.ht')
> ----
> then, inside start.ht, something like
> 	<h1><al-value expr="my_heading"/></h1>
> and it will work.  
> 
> But the trick is it uses the global namespace of the function that calls
> run_template(). If you use page modules, it has to be in the page module.  If
> you do what I do and have a library with a base class for Albatross pages that
> has a run_template function, then you will get the global namespace of the
> library module, not the application, unless you override the page_display in
> your concrete page class.
> 
> (Which is probably as clear as mud....)
> 
> 
> 
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-- 
Matt Goodall, Pollenation Internet Ltd
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