gitlab-org--gitlab-foss/db/migrate/20141121161704_add_identity_table.rb
Dmitriy Zaporozhets 1440ac8154
Remove index only if exists
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
2014-12-23 11:05:50 +02:00

46 lines
1.2 KiB
Ruby

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
if index_exists?(:users, ["extern_uid", "provider"])
remove_index :users, ["extern_uid", "provider"]
end
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
unless index_exists?(:users, ["extern_uid", "provider"])
add_index "users", ["extern_uid", "provider"], name: "index_users_on_extern_uid_and_provider", unique: true, using: :btree
end
end
end