Filters are, at the moment, all evaluated at precompile-time, rather
than render-time. This means that there's no way to get a reference to
the view object that has helpers defined, nor to take arguments from the
template. We plan to add this ability at some point.
s.ross wrote:
> I created a Rails form builder that creates lots o' two-column
> tabular forms. Occasionally, I need to intersperse textual
> instructions and it comes out looking awful in my Haml. What I did
> was create a filter called span_row, and I'd like some comment on it.
>
> Usage:
>
> Assuming you have a tabular_form_for kinda helper (see Rails Recipes)
> that generates one of these tables, the usage is like so:
>
> - tabular_form_for(@person) do |f|
> = render :partial => 'form', :locals => {:f => f}
> :span_row
> When you click "signup," you will be taken to a page where you
> can enter your credit card information. Please follow the
> instructions there carefully.
> = f.submit "Signup"
>
> The code for the helper is at:
>
> http://pastie.caboo.se/130587
>
> Issues:
>
> - I couldn't use the Haml::Helpers.open and .puts so indentation
> doesn't exist. Huh?
> - I'd like to use an optional argument to the filter for columns, but
> don't know exactly how to pass that. Suggestions?
>
> Thanks
>
> >
>
>
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