rubyonrailsin

Following just a quick look at the code see below for some obvious issues.

On 12 March 2010 19:43, Martin Colwell <lists@ruby-forum.com> wrote:
> I'm definitely a noob to rails so sorry if this is trivial.  I have
> tables with associations on them.  The associations are supposed to add
> methods to my models like model.others and model.others= and so on but
> when I try to use them I get errors like the following.
>
> NoMethodError: undefined method `states' for #<Ad:0x2c8a88c>
>        from
> C:/Ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/attribute_methods.rb:260:in
> `method_missing'
>        from (irb):4
>
> I've followed the execution in the debugger and all that the
> method_missing seems to do is generate setters, getters and ? for the
> fields in the table, it doesn't seem to generate or look for any of the
> methods that
> http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html
> says it should. I only did this once though and I didn't really
> understand what I was reading
>
> My code is the following
>
> Model classes:
>
> file: app/models/ad.rb
> class Ad < ActiveRecord::Base
>  belongs_to :customer
>  has_and_belongs_to_many :state

That should be :states (plural)

> end
>
> file: app/models/state.rb
> class State < ActiveRecord::Base
>  has_and_belongs_to_many :ad

Should be :ads

>  has_many :zip_code

:zip_codes

>  has_many :town

:towns

Colin

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