Rails - Mar 2007 - Is there a better way to do this? - newbie question

I''m deploying and running into problems that I didn''t have in
the
development environment...

In development, I have a section of code that says something like:

<% for charity in @charities %>
    <%= blah blah blah %>
<% end %>

and it works fine...

when I go to deployment, it throws an error saying it doesn''t recognize
this class variable (because there weren''t any charities entered in the
db).

When I put an ''if'' statement in front of the
''for'' loop, it works:

<% if @charities %>
<% for charity in @charities %>
    <%= blah blah blah %>
<% end %>

I kinda have 2 questions:
   1.  Why does not having the ''if'' statement work in
development, but
not in production?
   2.  Is there a cleaner way to write this code?

Thanks a HEAP :)

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Dustin,

You are probably not initializing @charities in the controller if
there are none.  I guess you could do this (see below) although I
would probably just check your controller code and always init
@charities...

<% for charity in (@charities || []) %>
  <%= blah blah blah %>
<% end %>

--
Zack Chandler
http://depixelate.com

On 3/28/07, Dustin Anderson
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> I''m deploying and running into problems that I didn''t
have in the
> development environment...
>
> In development, I have a section of code that says something like:
>
> <% for charity in @charities %>
>     <%= blah blah blah %>
> <% end %>
>
> and it works fine...
>
> when I go to deployment, it throws an error saying it doesn''t
recognize
> this class variable (because there weren''t any charities entered
in the
> db).
>
> When I put an ''if'' statement in front of the
''for'' loop, it works:
>
> <% if @charities %>
> <% for charity in @charities %>
>     <%= blah blah blah %>
> <% end %>
>
> I kinda have 2 questions:
>    1.  Why does not having the ''if'' statement work in
development, but
> not in production?
>    2.  Is there a cleaner way to write this code?
>
> Thanks a HEAP :)
>
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>
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> I''m deploying and running into problems that I didn''t
have in the
> development environment...
>
> In development, I have a section of code that says something like:
>
> <% for charity in @charities %>
>    <%= blah blah blah %>
> <% end %>
>
> and it works fine...
>
> when I go to deployment, it throws an error saying it doesn''t
recognize
> this class variable (because there weren''t any charities entered
in the
> db).
>
> When I put an ''if'' statement in front of the
''for'' loop, it works:
>
> <% if @charities %>
> <% for charity in @charities %>
>    <%= blah blah blah %>
> <% end %>
>
> I kinda have 2 questions:
>   1.  Why does not having the ''if'' statement work in
development, but
> not in production?
It works in production because you said there are rows in the production 
database that get populated into @charities. So @charities contains 
something.
>   2.  Is there a cleaner way to write this code?
How are you populating @charities?  Even in development with no records 
@charities should get set to [] in which case that for loop should work...

-philip

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Philip Hallstrom wrote:
>>
> How are you populating @charities?  Even in development with no records
> @charities should get set to [] in which case that for loop should 
> work...
> 
> -philip
Thanks gang - I''m running edge rails and screwed that up... we
didn''t
have the vendor/rails directory deploying - so I think it was running on 
an older version of rails that wasn''t as "smart"...




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