ansaurus

Question

Answer 1

A:

What's wrong with this?

def self.down
  remove_column :addresses, :addressable
end

Mark A. Nicolosi 2009-10-02 22:59:19

Thats what I thought it would be but this is the first time i have used polymorphic models and got confused

Damian 2009-10-02 23:07:08

actually it shouldn't it be remove_column :addresses, :addressable

Damian 2009-10-02 23:08:36

Oops, you're totally right. I should have checked the docs first, instead of going by memory.

Mark A. Nicolosi 2009-10-03 02:08:47

Answer 2

+1 A:

What's the problem?

def self.down
  remove_column :addresses, :addressable_type
  remove_column :addresses, :addressable_id
end

Leonid Shevtsov 2009-10-03 10:10:54

are you saying remove_column :addresses, :addressable is not correct?

Damian 2009-10-03 21:40:54

yeah.. this is the right solution

amikazmi 2009-10-04 11:03:37

Damian: no, just look at the table via some SQL browser and you will see the two columns.

Leonid Shevtsov 2009-10-04 13:26:02

Answer 3

+1 A:

actually,

   change_table :addresses do |t|
     t.remove_references :addressable
   end

would be a bit railsier, no?

rbxbx 2009-11-20 22:24:41

What is the down migration for adding a polymorphic reference