Rails - Jul 2005 - Mailer not resolving method from ApplicationHelper as of 0.13

Hi all,

In my application I''ve got mailer template referencing a date
formatting function that is from application_helper.rb. In 0.12.1 it
was fine, but now I get this error:

ActionView::TemplateError (undefined method `format_date_ddmmyyyy'' for
#<ActionView::Base:0x36c06b0>) on line #3 of /payment_receipt.rhtml:

Adding "require ''helpers/application_helper''" to the
top of the mailer
class didn''t help, and neither did "helper :application" in
the mailer
or controller that uses it (that one was a stretch, i know :)

Does anyone know what''s going on?

Cheers,
Dan

On Jul 9, 2005, at 9:06 PM, Dan Sketcher wrote:
> Hi all,
>
> In my application I''ve got mailer template referencing a date
> formatting function that is from application_helper.rb. In 0.12.1 it
> was fine, but now I get this error:
>
> ActionView::TemplateError (undefined method `format_date_ddmmyyyy''
for
> #<ActionView::Base:0x36c06b0>) on line #3 of /payment_receipt.rhtml:
>
> Adding "require ''helpers/application_helper''"
to the top of the mailer
> class didn''t help, and neither did "helper :application"
in the mailer
> or controller that uses it (that one was a stretch, i know :)
>
> Does anyone know what''s going on?
Dan, as of 0.13, helpers are no longer shared amongst all  
controllers. Before, whether you needed a helper or not, if it was  
loaded by one controller, it was loaded by all controllers. This  
caused (among other things) namespace clashes and other ugliness.

In 0.13, helpers are loaded into an anonymous module for each  
controller, so each controller only gets the helpers it needs (and  
requests). What is more, mailers do not use the application helper by  
default. However, you can explicitly add a helper to your mailers:

   class MyMailer < ActionMailer::Base
     helper :application_helper
     ...
   end

Try that, and see if it helps.

- Jamis

On 7/9/05, Jamis Buck <jamis-uHoyYlH2B+GakBO8gow8eQ@public.gmane.org>
wrote:
> On Jul 9, 2005, at 9:06 PM, Dan Sketcher wrote:
> > ... Does anyone know what''s going on?
> 
> Dan, as of 0.13, helpers are no longer shared amongst all
> controllers. Before, whether you needed a helper or not, if it was
> loaded by one controller, it was loaded by all controllers. This
> caused (among other things) namespace clashes and other ugliness.
> 
> In 0.13, helpers are loaded into an anonymous module for each
> controller, so each controller only gets the helpers it needs (and
> requests). What is more, mailers do not use the application helper by
> default. However, you can explicitly add a helper to your mailers:
> 
>    class MyMailer < ActionMailer::Base
>      helper :application_helper
>      ...
>    end
> 
> Try that, and see if it helps.
> 
> - Jamis
> 
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> http://lists.rubyonrails.org/mailman/listinfo/rails
> 
Glad to find this email. I''ve been banging my head all morning trying
to figure out what I broke!

I could be mistaken, but I didn''t see anything about this in the
CHANGELOG, or at
http://weblog.rubyonrails.com/archives/2005/07/06/rails-013-225-featuresfixes-in-75-days/
Might be nice to add, at least in the changelog, to prevent other''s
from bruising their forehead too. ;)

-- 
Chris Martin
Web Developer
Open Source & Web Standards Advocate
http://www.chriscodes.com/