Rails - May 2009 - My first plugin => my first Stack level too deep

Hello,


I''ve just created my first plugin, is really a simple one, and it has
only one validation, special for a spanish bank account.

As I need it in more than one RoR, I''ve decided to create as a plugin,
but now I''m having Stack level too deep every time I save a record, no
matter if this validation is from the same model or not, always Stack
level too deep.

If I remove the plugin, everything works as expected.

I''m totally newbie for plugin creation, I found some examples on
internet and tried to follow/adapt them ...

Any blog, wiki, or how-to about plugin creation would be wellcome

thanks,

r.



Here are the files:



Vendor/plugins/cc_validator/init.rb:
-------------------------------------------
# Include hook code here
ActiveRecord::Validations::ClassMethods.send :include, CcValidator
ActiveRecord::Base.class_eval do
  include ActiveRecord::Validations
end

Vendor/plugins/cc_validator/lib/cc_validator.rb
-------------------------------------------
# CcValidator
module CcValidator
  # Checks if an ActiveRecord property is a valid Spanish bank account
number.
  def validates_cc_of(*attrs)
    configuration = { :message =>
ActiveRecord::Errors.default_error_messages[:invalid], :on => :save,
:with => nil }
    configuration.update(attrs.pop) if attrs.last.is_a?(Hash)

    validates_each(attrs, configuration) do |record, attr_name, value|
      record.errors.add(attr_name, configuration[:message]) unless
cc(value) == 0
    end
  end

  private
  # Calculates the CC of a Spanish bank account number.
  # Return value should be 0 (cc succeeded). Any other value means
faillure.
  # http://es.wikipedia.org/wiki/Código_Cuenta_Cliente

 def cc(account)

    ...

 ...

  end


end
-- 
Posted via http://www.ruby-forum.com/.

Ok, first we''ll need the exception backtrace to be sure about where
this code is breaking, but you can start by changing your plugin a
little bit:

Vendor/plugins/cc_validator/init.rb:
-------------------------------------------
# Include hook code here
ActiveRecord::Base.extend CcValidator

-
Maurício Linhares
http://alinhavado.wordpress.com/ (pt-br) | http://blog.codevader.com/ (en)



On Tue, May 5, 2009 at 5:02 AM, Raimon Fs
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> Hello,
>
>
> I''ve just created my first plugin, is really a simple one, and it
has
> only one validation, special for a spanish bank account.
>
> As I need it in more than one RoR, I''ve decided to create as a
plugin,
> but now I''m having Stack level too deep every time I save a
record, no
> matter if this validation is from the same model or not, always Stack
> level too deep.
>
> If I remove the plugin, everything works as expected.
>
> I''m totally newbie for plugin creation, I found some examples on
> internet and tried to follow/adapt them ...
>
> Any blog, wiki, or how-to about plugin creation would be wellcome
>
> thanks,
>
> r.
>
>
>
> Here are the files:
>
>
>
> Vendor/plugins/cc_validator/init.rb:
> -------------------------------------------
> # Include hook code here
> ActiveRecord::Validations::ClassMethods.send :include, CcValidator
> ActiveRecord::Base.class_eval do
>  include ActiveRecord::Validations
> end
>
> Vendor/plugins/cc_validator/lib/cc_validator.rb
> -------------------------------------------
> # CcValidator
> module CcValidator
>  # Checks if an ActiveRecord property is a valid Spanish bank account
> number.
>  def validates_cc_of(*attrs)
>    configuration = { :message =>
> ActiveRecord::Errors.default_error_messages[:invalid], :on => :save,
> :with => nil }
>    configuration.update(attrs.pop) if attrs.last.is_a?(Hash)
>
>    validates_each(attrs, configuration) do |record, attr_name, value|
>      record.errors.add(attr_name, configuration[:message]) unless
> cc(value) == 0
>    end
>  end
>
>  private
>  # Calculates the CC of a Spanish bank account number.
>  # Return value should be 0 (cc succeeded). Any other value means
> faillure.
>  # http://es.wikipedia.org/wiki/Código_Cuenta_Cliente
>
>  def cc(account)
>
>    ...
>
>  ...
>
>  end
>
>
> end
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>

Maurício Linhares wrote:
> Ok, first we''ll need the exception backtrace to be sure about
where
> this code is breaking, but you can start by changing your plugin a
> little bit:
> 
> Vendor/plugins/cc_validator/init.rb:
> -------------------------------------------
> # Include hook code here
> ActiveRecord::Base.extend CcValidator
Hello Maurício,

thanks, now it works perfect!

now, where I can get more info about extending RoR with plug-ins ????

:-)

thanks ...

r.
-- 
Posted via http://www.ruby-forum.com/.

You can try this one -> http://peepcode.com/products/rails-2-plugin-patterns

-
Maurício Linhares
http://alinhavado.wordpress.com/ (pt-br) | http://blog.codevader.com/ (en)



On Tue, May 5, 2009 at 8:48 AM, Raimon Fs
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> Maurício Linhares wrote:
>> Ok, first we''ll need the exception backtrace to be sure about
where
>> this code is breaking, but you can start by changing your plugin a
>> little bit:
>>
>> Vendor/plugins/cc_validator/init.rb:
>> -------------------------------------------
>> # Include hook code here
>> ActiveRecord::Base.extend CcValidator
>
> Hello Maurício,
>
> thanks, now it works perfect!
>
> now, where I can get more info about extending RoR with plug-ins ????
>
> :-)
>
> thanks ...
>
> r.
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>