Rails - Apr 2011 - polymorphic associations

Sorry for my english if something goes wrong.
I have a model of Property

class Property <ActiveRecord:: Base
   has_many: values,: class_name => "ProductProperty"
End

And correspondingly ProductProperty model in which values ​​are stored.

class ProductProperty <ActiveRecord:: Base
   belongs_to: product
   belongs_to: property
end

Now the stored values ​​are of type String. Do I have a need to store
different types of Integer, Boolean and String. I came up just one idea
how to implement it. Add to the model Property column type. And rewrite
the method values:

def values
  case self.type
    when ''ProductPropertyString''
      ProductPropertyString.where(:property_id => self.id)
    when ''ProductPropertyBoolean''
      ProductPropertyBoolean.where(:property_id => self.id)
    when ''ProductPropertyInteger''
      ProductPropertyInteger.where(:property_id => self.id)
end

Maybe somebody has already faced with this challenge and how to solve it
correctly?

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`type` attribute is of which model ?? I guess it is of property model and
`values` method wrote inside property model, right ?

ProductPropertyString, ProductPropertyBoolean, ProductPropertyInteger are
these models ??
if yes, why do you need association ?
"has_many: values,: class_name =>
''ProductProperty''"

On Tue, Apr 12, 2011 at 12:20 PM, Vasin Alexander
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>wrote:
> Sorry for my english if something goes wrong.
> I have a model of Property
>
> class Property <ActiveRecord:: Base
>   has_many: values,: class_name => "ProductProperty"
> End
>
> And correspondingly ProductProperty model in which values are stored.
>
> class ProductProperty <ActiveRecord:: Base
>   belongs_to: product
>   belongs_to: property
> end
>
> Now the stored values are of type String. Do I have a need to store
> different types of Integer, Boolean and String. I came up just one idea
> how to implement it. Add to the model Property column type. And rewrite
> the method values:
>
> def values
>  case self.type
>    when ''ProductPropertyString''
>      ProductPropertyString.where(:property_id => self.id)
>    when ''ProductPropertyBoolean''
>      ProductPropertyBoolean.where(:property_id => self.id)
>    when ''ProductPropertyInteger''
>      ProductPropertyInteger.where(:property_id => self.id)
> end
>
> Maybe somebody has already faced with this challenge and how to solve it
> correctly?
>
> --
> Posted via http://www.ruby-forum.com/.
>
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>
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class Property <ActiveRecord:: Base
   has_many: values,: class_name => "ProductProperty"
End
It was in the original model.


In the amended accordingly will:
class Property <ActiveRecord:: Base
   has_many :string_values,: class_name => "ProductPropertyString"
   has_many :integer_values,: class_name =>
"ProductPropertyInteger"
   has_many :boolean_values,: class_name =>
"ProductPropertyBoolean"
End

But I think this solution is clumsy.

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