The best way (for me) is using nested attributes (http://
api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/
ClassMethods.html). You can look a very complete example of usage in:
http://github.com/alloy/complex-form-examples/tree/master and in
http://github.com/soldieron/jquery-nested-forms/tree/master
Regards.
Franco Catena.
On 5 jun, 13:49, Jose Ernesto Suarez <suarez.erne...@gmail.com> wrote:
> Hi everyone.
>
> I´m working on application that has a "has_and_belongs_to_many" betwen
> two models: "expedientes" and "documentos".
> When I´m on the console, I need to pass a Expedientes Array to
> documentos, otherwise I get a ActiveRecord::AssociationTypeMismatch
> exception.
>
> Example:>> d=Documento.new
>
> => #<Documento id: nil...>> d.expedientes=[1]
>
> ActiveRecord::AssociationTypeMismatch: Expediente(#18729340) expected,
> got Fixnum(#108610)
> ...>> d.expedientes="1"
>
> ActiveRecord::AssociationTypeMismatch: Expediente(#18729340) expected,
> got String(#113650)
> ...>> d.expedientes=Expediente.find("1")
>
> NoMethodError: undefined method `each' for #<Expediente:0x23a96a0>
> ...>> d.expedientes=[Expediente.find("1")]
>
> => [#<Expediente id: 1, ...That´s ok!
>
> How must I made this relationship from the view?
> I´ve mading a Form.hidden_field from the view "new" with the name
> "expedientes" and the value of the expediente.id of the
> relationship,but seems incorrect.
>
> What´s the best way to do that?
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