Ruby on Rails

On Saturday, 18 May 2013 11:14:35 UTC-4, Denny Mueller wrote:

This is my setup. I have a table user where all user with password and so on are set. The customer table has some customer related data. The user_id is the foreign key to relate the customers to the user.

On of the column in the customer table is the customernumber. These numbers has to be uniq for each user_id. 

class Customers
belongs_to :user
end

class Users
has_many :customers
end

For example.

customer | customernumber | user_id 

1              0001                    1

2              0002                    1

3              0001                    2

4              0001                    3

5              0002                    3

How can i approach this? Any hints what I have to look for?

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