[Rails] How to generate mapping with migration

[Daniel Völkerts]

Daniel Völkerts schrieb:

> Any hints appreciated,

Ohh, read the api carefully.

class AddNotesCategoriesMapping < ActiveRecord::Migration
   def self.up
		create_table :categories_notes, :id=>false do |t|
			t.column :category_id, :primary_key, :null=>false
			t.column :note_id, :primary_key, :null=>false
		end
   end

   def self.down
		drop_table :categories_notes
   end
end

Greetings,

-- 
Daniel Völkerts
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