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class ConvertAwardNoteToEmojiAward < ActiveRecord::Migration[4.2]
disable_ddl_transaction!
def up
if Gitlab::Database.postgresql?
migrate_postgresql
else
migrate_mysql
end
end
def down
add_column :notes, :is_award, :boolean
# This migration does NOT move the awards on notes, if the table is dropped in another migration, these notes will be lost.
execute "INSERT INTO notes (noteable_type, noteable_id, author_id, note, created_at, updated_at, is_award) (SELECT awardable_type, awardable_id, user_id, name, created_at, updated_at, TRUE FROM award_emoji)"
end
def migrate_postgresql
connection.transaction do
execute 'LOCK notes IN EXCLUSIVE MODE'
execute "INSERT INTO award_emoji (awardable_type, awardable_id, user_id, name, created_at, updated_at) (SELECT noteable_type, noteable_id, author_id, note, created_at, updated_at FROM notes WHERE is_award = true)"
execute "DELETE FROM notes WHERE is_award = true"
remove_column :notes, :is_award, :boolean
end
end
def migrate_mysql
execute 'LOCK TABLES notes WRITE, award_emoji WRITE;'
execute 'INSERT INTO award_emoji (awardable_type, awardable_id, user_id, name, created_at, updated_at) (SELECT noteable_type, noteable_id, author_id, note, created_at, updated_at FROM notes WHERE is_award = true);'
execute "DELETE FROM notes WHERE is_award = true"
remove_column :notes, :is_award, :boolean
ensure
execute 'UNLOCK TABLES'
end
end
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