vhochstein fork: helper methods namespace collide

[Nick Rogers]

In active_scaffold vhochstein fork under rails 3.0.5, if you create a form or column helper method override for two different scaffold controllers having an attribute with the same name, they overwrite one another.

For example, using volker's demo app.

# is NEVER called for players scaffold

module PlayersHelper

  def name_column(record)

    "a Player: #{record.name}"

  end

end

# this is called by teams AND players scaffold

module TeamsHelper

  def name_column(record)

    "a Team: #{record.name}"

  end

end

Players

Name Date of birth Injured Salary Team Created at Updated at

a Team: nick - 0.000 test Tue, 14 Jun 2011 14:57:20 +0000 Tue, 14 Jun 2011 14:57:52 +0000 Edit Delete Show

I'm having similar problems with my rails 2.3 app that I'm trying to convert to rails 3. Is this a rails3 problem, active_scaffold issue, or something I'm doing incorrectly? Thanks.

[vhochstein]

Hi,

rails 3 is including all helpers as a default.

Either, turn off that feature
or, define only one method name_column and do a case statement by
record class.

--
Volker

On 17 Jun., 16:00, Nick Rogers <ncrog...@gmail.com> wrote:
> In active_scaffold vhochstein fork under rails 3.0.5, if you create a form
> or column helper method override for two different scaffold controllers
> having an attribute with the same name, they overwrite one another.
>
> For example, using volker's demo app.
>
> # is NEVER called for players scaffold
> module PlayersHelper
>   def name_column(record)
>     "a Player: #{record.name}"
>   end
> end
>
> # this is called by teams AND players scaffold
> module TeamsHelper
>   def name_column(record)
>     "a Team: #{record.name}"
>   end
> end
>
> Players

> *Name* Date of birth Injured Salary Team Created at Updated at
> *a Team*: nick - 0.000 test Tue, 14 Jun 2011 14:57:20 +0000 Tue, 14 Jun 2011

[Nick Rogers]

That helped. Thanks.

For anyone else having this problem, apparently there isn't a well-documented way to turn this off. However, you can add the following to ApplicationController (or a subclass of).

# disable implicit helper(:all) in rails3

clear_helpers

Reference:

http://www.shopify.com/technology/3033502-shopifys-path-to-rails-3

http://api.rubyonrails.org/classes/AbstractController/Helpers/ClassMethods.html#method-i-clear_helpers

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