Ruby on Rails Monday, November 22, 2010

On Nov 22, 10:37 pm, Aedorn Varanis <aed...@gmail.com> wrote:
> I feel like I'm missing something rather important in both
> circumstances, but I can't seem to figure either out:
>
> 1) I have a model named TestCase -
> class TestCase < ActiveRecord::Base
>   belongs_to :test_suite
>   scope :queued, lambda { where("test_cases.suite_id IS NOT NULL") }
>   scope :assigned_to, lambda { |sid| where(:suite_id => sid) }
> end
>
> The controller can interact with it perfectly fine. When trying to
> display information from it in either the view or via the view helper
> such as TestCase.all, I get a NoMethodError (undefined method `all'.)
> If I call it with ::TestCase.all, that works. I had a theory that it
> has something to do with the fact that it's associated to another
> model (belongs_to ...), I just can't find anything to confirm that or
> tell me why that happens.
>
You're probably picking up one of the other TestCase classes that are
part of rails or the ruby standard library (eg ActionView::TestCase)

>
> @artwork = Artwork.find(params[:id])
> value = params[:value].to_sym
> @artwork.update_attributes(value => !...@artwork.method(value).call)
>
> That gives me a NoMethodError. However, if I add - if
> @artwork.respond_to?(value)  - then it works as expected. Again, I
> can't figure out why.

Attribute accessors methods are only created when they are first used,
so method doesn't find them. If you just use send instead that that
should work fine (since that will hit the method_messing code that
creates those methods (which calling respond_to also does))

Fred
>
> Both items I get working using the mentioned methods, but again, I
> feel like I'm really missing something important here.

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