Namespaced Scaffolds and AR

rubyonrails-core
1

Just wondering about the decisions on name space handling. Wondering if this is a bug or by design and if maybe it should be changed. (I'd be glad to bugfix).

In the case I ran: $ rails g scaffold Ecom::Cart

the migration would create a table named ecom_carts. The model and Controller would be placed in the appropriate folders ecom/cart.rb. but when you run the tests ActiveRecord clearly errors searching for table my_database.carts. So the pattern for the scaffold seems to handle the name spacing appropriately everywhere but AR doesn't follow the pattern when searching for the table.

Just wondering if there was a reason behind that or if I should branch and try and bug fix?

Cheers, Brian

2

Works fine for me thanx to ecom.rb

module Ecom

def self.table_name_prefix

‘ecom_’

end

end

make sure that you have

class Ecom::Cart < ActiveRecord::Base

end

instead of

module Ecom

class Cart < ActiveRecord::Base

end

end

in your ecom/cart.rb

Robert Pankowecki

http://robert.pankowecki.pl

3

Hey Robert,

This is a good solution to the generated code but my concern is why is this solution needed at all. This file isn't generated via the scaffold which means without knowledge of it after you generate the scaffold the code is broken by default Edit: I was wrong. Rails 3 does generate the ecom.rb file accordingly with the scaffold. Rails 2.3.10 does not.

Even so, if the scaffold knows how to generate the proper table name from Ecom::Cart. Why does active record need us to explicitly define a table_name_prefix. Shouldn't it have the same ability to work out that the Ecom::Cart table is ecom_carts? and If not I'm really just wondering the design reasoning behind deciding to go with the ecom.rb method. I'm mainly interested in the process of decision making I think.

Cheers, Brian

4

I think it is done this way to easily overwrite table_name_prefix for all tables of namespaced models. And when it comes to decision making process I know nothing about it so I cannot help you with that question.

Robert