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bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org

2009-Feb-02 16:44 UTC

belongs_to / has_many does not save

Hi

I''m following pretty closely the following the Depot Application from
the ''Agile Web Development with Rails'' (3rd edition), but I
run into
deep trouble. I have:


class Product < ActiveRecord::Base
  has_many :charge_items
end

class Transaction < ActiveRecord::Base
  belongs_to :user
  has_many :charge_items
end

class ChargeItem < ActiveRecord::Base
  belongs_to :transaction
  belongs_to :product
end

Running script/console, I try the following:
Loading development environment (Rails 2.2.2)>> p = Product.find(:first)=> #<Product id: 1, name: "50 Clicks", description: "50
Clicks",
valid_from: "2009-01-20 09:37:00", valid_until: "2010-01-20
09:37:00",
number_of_clicks: 50, price:
#<BigDecimal:7f4458231588,''0.2E2'',9(18)>,
created_at: "2009-01-20 09:38:52", updated_at: "2009-01-20
09:38:52">>> t = Transaction.find(:first)=> #<Transaction id: 43, user_id: 6, created_at: "2009-02-02
09:07:24", updated_at: "2009-02-02
09:07:24">>> c = ChargeItem.new(:transaction => t, :product => p, :quantity
=> 1, :total_price => 29.95)=> #<ChargeItem id: nil, transaction_id: 43, product_id: 1, quantity:
1, total_price:
#<BigDecimal:7f44581e70c8,''0.2995E2'',18(18)>,
created_at: nil, updated_at: nil>>> c.save
=> nil>>
I.e., the charge_item never gets saved.

any hint or idea is extremely welcome.
nd
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Frederick Cheung

2009-Feb-02 17:42 UTC

head link

Re: belongs_to / has_many does not save

On 2 Feb 2009, at 16:44, bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org wrote:
>
> Hi
>
> I''m following pretty closely the following the Depot Application
from
> the ''Agile Web Development with Rails'' (3rd edition), but
I run into
> deep trouble. I have:
>
>Before 2.3 having an association called transaction is a bad bad idea.

Fred> class Product < ActiveRecord::Base
>  has_many :charge_items
> end
>
> class Transaction < ActiveRecord::Base
>  belongs_to :user
>  has_many :charge_items
> end
>
> class ChargeItem < ActiveRecord::Base
>  belongs_to :transaction
>  belongs_to :product
> end
>
> Running script/console, I try the following:
> Loading development environment (Rails 2.2.2)
>>> p = Product.find(:first)
> => #<Product id: 1, name: "50 Clicks", description:
"50 Clicks",
> valid_from: "2009-01-20 09:37:00", valid_until: "2010-01-20
09:37:00",
> number_of_clicks: 50, price:
#<BigDecimal:7f4458231588,''0.2E2'',9(18)>,
> created_at: "2009-01-20 09:38:52", updated_at: "2009-01-20
09:38:52">
>>> t = Transaction.find(:first)
> => #<Transaction id: 43, user_id: 6, created_at: "2009-02-02
> 09:07:24", updated_at: "2009-02-02 09:07:24">
>>> c = ChargeItem.new(:transaction => t, :product => p,
:quantity =>
>>> 1, :total_price => 29.95)
> => #<ChargeItem id: nil, transaction_id: 43, product_id: 1, quantity:
> 1, total_price:
#<BigDecimal:7f44581e70c8,''0.2995E2'',18(18)>,
> created_at: nil, updated_at: nil>
>>> c.save
> => nil
>>>
>
> I.e., the charge_item never gets saved.
>
> any hint or idea is extremely welcome.
> nd
> >

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bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org

2009-Feb-03 13:32 UTC

head link

Re: belongs_to / has_many does not save

I ''renamed'' the ''Transaction'' model to
''Order'' and voila: It works!

thanks!
nd

On Feb 2, 6:42 pm, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> On 2 Feb 2009, at 16:44, bachm...-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org
wrote:
>
>
>
> > Hi
>
> > I''m following pretty closely the following the Depot
Application from
> > the ''Agile Web Development with Rails'' (3rd
edition), but I run into
> > deep trouble. I have:
>
> Before 2.3 having an association called transaction is a bad bad idea.
>
> Fred
>
> > class Product < ActiveRecord::Base
> >  has_many :charge_items
> > end
>
> > class Transaction < ActiveRecord::Base
> >  belongs_to :user
> >  has_many :charge_items
> > end
>
> > class ChargeItem < ActiveRecord::Base
> >  belongs_to :transaction
> >  belongs_to :product
> > end
>
> > Running script/console, I try the following:
> > Loading development environment (Rails 2.2.2)
> >>> p = Product.find(:first)
> > => #<Product id: 1, name: "50 Clicks", description:
"50 Clicks",
> > valid_from: "2009-01-20 09:37:00", valid_until:
"2010-01-20 09:37:00",
> > number_of_clicks: 50, price:
#<BigDecimal:7f4458231588,''0.2E2'',9(18)>,
> > created_at: "2009-01-20 09:38:52", updated_at:
"2009-01-20 09:38:52">
> >>> t = Transaction.find(:first)
> > => #<Transaction id: 43, user_id: 6, created_at:
"2009-02-02
> > 09:07:24", updated_at: "2009-02-02 09:07:24">
> >>> c = ChargeItem.new(:transaction => t, :product => p,
:quantity =>
> >>> 1, :total_price => 29.95)
> > => #<ChargeItem id: nil, transaction_id: 43, product_id: 1,
quantity:
> > 1, total_price:
#<BigDecimal:7f44581e70c8,''0.2995E2'',18(18)>,
> > created_at: nil, updated_at: nil>
> >>> c.save
> > => nil
>
> > I.e., the charge_item never gets saved.
>
> > any hint or idea is extremely welcome.
> > nd--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
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Alan Brown

2009-Feb-03 19:19 UTC

head link

Re: belongs_to / has_many does not save

i know this seems obvious, but are you sure the table exists? also, are
created_at or updated_at required columns in your schema?  if so, they are
nil and need to be set before you save.

On Mon, Feb 2, 2009 at 8:44 AM, bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org
<bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org>wrote:
>
> Hi
>
> I''m following pretty closely the following the Depot Application
from
> the ''Agile Web Development with Rails'' (3rd edition), but
I run into
> deep trouble. I have:
>
>
> class Product < ActiveRecord::Base
>  has_many :charge_items
> end
>
> class Transaction < ActiveRecord::Base
>  belongs_to :user
>  has_many :charge_items
> end
>
> class ChargeItem < ActiveRecord::Base
>  belongs_to :transaction
>  belongs_to :product
> end
>
> Running script/console, I try the following:
> Loading development environment (Rails 2.2.2)
> >> p = Product.find(:first)
> => #<Product id: 1, name: "50 Clicks", description:
"50 Clicks",
> valid_from: "2009-01-20 09:37:00", valid_until: "2010-01-20
09:37:00",
> number_of_clicks: 50, price:
#<BigDecimal:7f4458231588,''0.2E2'',9(18)>,
> created_at: "2009-01-20 09:38:52", updated_at: "2009-01-20
09:38:52">
> >> t = Transaction.find(:first)
> => #<Transaction id: 43, user_id: 6, created_at: "2009-02-02
> 09:07:24", updated_at: "2009-02-02 09:07:24">
> >> c = ChargeItem.new(:transaction => t, :product => p,
:quantity => 1,
> :total_price => 29.95)
> => #<ChargeItem id: nil, transaction_id: 43, product_id: 1, quantity:
> 1, total_price:
#<BigDecimal:7f44581e70c8,''0.2995E2'',18(18)>,
> created_at: nil, updated_at: nil>
> >> c.save
> => nil
> >>
>
> I.e., the charge_item never gets saved.
>
> any hint or idea is extremely welcome.
> nd
> >
>

-- 
Available for Ruby on Rails development opportunities

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Julian Leviston

2009-Feb-03 23:43 UTC

head link

Re: belongs_to / has_many does not save

You can''t be following it THAT closely. Transaction is reserved in  
active record for database transactions

Blog: http://random8.zenunit.com/
Learn rails: http://sensei.zenunit.com/

On 04/02/2009, at 6:19 AM, Alan Brown
<stretch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> i know this seems obvious, but are you sure the table exists? also,  
> are created_at or updated_at required columns in your schema?  if  
> so, they are nil and need to be set before you save.
>
> On Mon, Feb 2, 2009 at 8:44 AM,
bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org
<bachmann-HHQVGFfPtShyDzI6CaY1VQ@public.gmane.org
> > wrote:
>
> Hi
>
> I''m following pretty closely the following the Depot Application
from
> the ''Agile Web Development with Rails'' (3rd edition), but
I run into
> deep trouble. I have:
>
>
> class Product < ActiveRecord::Base
>  has_many :charge_items
> end
>
> class Transaction < ActiveRecord::Base
>  belongs_to :user
>  has_many :charge_items
> end
>
> class ChargeItem < ActiveRecord::Base
>  belongs_to :transaction
>  belongs_to :product
> end
>
> Running script/console, I try the following:
> Loading development environment (Rails 2.2.2)
> >> p = Product.find(:first)
> => #<Product id: 1, name: "50 Clicks", description:
"50 Clicks",
> valid_from: "2009-01-20 09:37:00", valid_until: "2010-01-20
09:37:00",
> number_of_clicks: 50, price:
#<BigDecimal:7f4458231588,''0.2E2'',9(18)>,
> created_at: "2009-01-20 09:38:52", updated_at: "2009-01-20
09:38:52">
> >> t = Transaction.find(:first)
> => #<Transaction id: 43, user_id: 6, created_at: "2009-02-02
> 09:07:24", updated_at: "2009-02-02 09:07:24">
> >> c = ChargeItem.new(:transaction => t, :product => p,
:quantity =>
> 1, :total_price => 29.95)
> => #<ChargeItem id: nil, transaction_id: 43, product_id: 1, quantity:
> 1, total_price:
#<BigDecimal:7f44581e70c8,''0.2995E2'',18(18)>,
> created_at: nil, updated_at: nil>
> >> c.save
> => nil
> >>
>
> I.e., the charge_item never gets saved.
>
> any hint or idea is extremely welcome.
> nd
>
>
>
>
> -- 
> Available for Ruby on Rails development opportunities
>
> >
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Rails - Feb 2009 - belongs_to / has_many does not save

belongs_to / has_many does not save

Re: belongs_to / has_many does not save

Re: belongs_to / has_many does not save

Re: belongs_to / has_many does not save

Re: belongs_to / has_many does not save