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class AddIdentityTable < ActiveRecord::Migration
def up
create_table :identities do |t|
t.string :extern_uid
t.string :provider
t.references :user
end
add_index :identities, :user_id
execute <<eos
INSERT INTO identities (provider, extern_uid, user_id)
SELECT provider, extern_uid, id FROM users
WHERE provider IS NOT NULL
eos
remove_column :users, :extern_uid
remove_column :users, :provider
end
def down
add_column :users, :extern_uid, :string
add_column :users, :provider, :string
if ActiveRecord::Base.connection.adapter_name == 'PostgreSQL'
execute <<eos
UPDATE users u
SET provider = i.provider, extern_uid = i.extern_uid
FROM identities i
WHERE i.user_id = u.id
eos
else
execute "UPDATE users u, identities i SET u.provider = i.provider, u.extern_uid = i.extern_uid WHERE u.id = i.user_id"
end
drop_table :identities
end
end
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