Rails - Jun 2008 - Can create record but can not update it => has_many through

Hi All,

I have a problem using has_many through association. I can create a product
without problem, but when i edit it, i got this NoMethodError:

undefined method `reciters='' for #<Product:0xb71a77e8>

Did i miss something to code? I provided the codes below. Please help

Thanks,

Dida



product_controller.rb
=====================def create
    @product = Product.new(params[:product])

    if @product.save
      unless params[:reciters].blank?
        @product.reciters << Qori.find(params[:reciters])
      end
      flash[:notice] = ''New product successfully created.''
      redirect_to :action => ''index''
    else
      render :action => ''new''
    end
end

def update
    @product = Product.find(params[:id])

    @product.update_attributes(params[:product])

    unless params[:reciters].blank?
      @product.reciters = Qori.find(params[:reciters])
    end

    if @product.save
      flash[:notice] = ''Product has been updated.''
      redirect_to :action => ''show'', :id => @product
    else
      render :action => ''edit''
    end
end

================== product_controller.rb

product.rb
=================class Product < ActiveRecord::Base
  ...
  has_many    :pilihan_qoris
  has_many    :reciters, :through => :pilihan_qoris, :source => :qori
  ...

qori.rb
================class Qori < ActiveRecord::Base
  has_many :products
  has_many :pilihan_qoris
  has_many :creations, :through => :pilihan_qoris, :source => :product
  ...
================
--~--~---------~--~----~------------~-------~--~----~
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On Jun 7, 11:12 am, "Adinda Praditya"
<apradi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Hi All,
>
> I have a problem using has_many through association. I can create a product
> without problem, but when i edit it, i got this NoMethodError:
>
> undefined method `reciters='' for #<Product:0xb71a77e8>
>
> Did i miss something to code? I provided the codes below. Please help
>
has_many :through doesn''t have foos= before rails 2.1

Fred
> Thanks,
>
> Dida
>
> product_controller.rb
> =====================> def create
>     @product = Product.new(params[:product])
>
>     if @product.save
>       unless params[:reciters].blank?
>         @product.reciters << Qori.find(params[:reciters])
>       end
>       flash[:notice] = ''New product successfully
created.''
>       redirect_to :action => ''index''
>     else
>       render :action => ''new''
>     end
> end
>
> def update
>     @product = Product.find(params[:id])
>
>     @product.update_attributes(params[:product])
>
>     unless params[:reciters].blank?
>       @product.reciters = Qori.find(params[:reciters])
>     end
>
>     if @product.save
>       flash[:notice] = ''Product has been updated.''
>       redirect_to :action => ''show'', :id =>
@product
>     else
>       render :action => ''edit''
>     end
> end
>
> ================== product_controller.rb
>
> product.rb
> =================> class Product < ActiveRecord::Base
>   ...
>   has_many    :pilihan_qoris
>   has_many    :reciters, :through => :pilihan_qoris, :source => :qori
>   ...
>
> qori.rb
> ================> class Qori < ActiveRecord::Base
>   has_many :products
>   has_many :pilihan_qoris
>   has_many :creations, :through => :pilihan_qoris, :source =>
:product
>   ...
> ================--~--~---------~--~----~------------~-------~--~----~
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On Sat, Jun 7, 2008 at 6:22 PM, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> has_many :through doesn''t have foos= before rails 2.1
>
Would you explain your answer a bit more? How come i can create a record
without the error as i got when i was trying to update it? Any reference?
Other solution to use instead?

Thanks,

Adinda P

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On Jun 8, 8:56 am, "Adinda Praditya"
<apradi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On Sat, Jun 7, 2008 at 6:22 PM, Frederick Cheung
<frederick.che...@gmail.com>
> wrote:
>
>
>
> > has_many :through doesn''t have foos= before rails 2.1
>
> Would you explain your answer a bit more? How come i can create a record
> without the error as i got when i was trying to update it? Any reference?
> Other solution to use instead?
>
Pretty much what I said. if you have has_many :customers you can do
customers= ..., but if you have has_many :customers, :through
=> :something_else, then until 2.1 you can''t do it. It''s
just not
implemented (you''ll have to do it yourself using the methods that are
available - the documentation on associations has a table of which
association types have which methods).

Fred

> Thanks,
>
> Adinda P
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On Sun, Jun 8, 2008 at 6:41 PM, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> Pretty much what I said. if you have has_many :customers you can do
> customers= ..., but if you have has_many :customers, :through
> => :something_else, then until 2.1 you can''t do it.
It''s just not
> implemented (you''ll have to do it yourself using the methods that
are
> available - the documentation on associations has a table of which
> association types have which methods).
>
I tried with @product.reciter_ids = params[:reciters] before and i also got
NoMethodError. Please help.

unless params[:reciters].blank?
    @product.reciters = Qori.find(params[:reciters])
end

Thanks,

Adinda P


Fred
>
>
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On 8 Jun 2008, at 16:25, Adinda Praditya wrote:
> On Sun, Jun 8, 2008 at 6:41 PM, Frederick Cheung
<frederick.cheung-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
> > wrote:
>
> Pretty much what I said. if you have has_many :customers you can do
> customers= ..., but if you have has_many :customers, :through
> => :something_else, then until 2.1 you can''t do it.
It''s just not
> implemented (you''ll have to do it yourself using the methods that
are
> available - the documentation on associations has a table of which
> association types have which methods).
>
> I tried with @product.reciter_ids = params[:reciters] before and i  
> also got NoMethodError. Please help.
>
foo_ids= doesn''t exist either. You need to use <<, delete etc...
(or
upgrade to 2.1)

Fred
> unless params[:reciters].blank?
>     @product.reciters = Qori.find(params[:reciters])
> end
>
> Thanks,
>
> Adinda P
>
>
> Fred
>
>
>
> >

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