Undefined method `column' for Foreigner::ConnectionAdapters::ForeignKeyDefinition

Question

I'm getting the following when I try to run a migration:

NoMethodError: undefined method `column' for #<Foreigner::ConnectionAdapters::ForeignKeyDefinition:0x007fa020938740>

Here's the migration code:

class CreateAdvertisement < ActiveRecord::Migration
  def change
    create_table :advertisement do |t|
      t.integer :issue_id, null: false
      t.string :client_name, null: false
      t.decimal :size, null: false
      t.decimal :price, null: false
      t.decimal :commission_amount, null: false
      t.string :first_payment, null: false
      t.string :second_payment, null: false

      t.timestamps null: false
      t.foreign_key :issue
    end
  end
end

I have Foreigner 1.6.1 installed, Rails 4.2.0. Any ideas?

Answer 1

You, or one of your gems use the 'foreigner' gem, which is deprecated with rails 4.2.0

You should update it or remove this dependency. Maybe someone already did it, for example i use 'mailboxer' gem, and 'github.com/div' already forked the project to create a branch, so i changed my Gemfile :

gem 'mailboxer', :git => 'git://github.com/div/mailboxer.git', :branch => 'rails42-foreigner'

Answer 2

You don't need foreigner with Rails 4.2, as it already has foreign-key support built-in. The syntax is very similar (although not identical) to foreigner.

See: http://edgeguides.rubyonrails.org/4_2_release_notes.html#foreign-key-support