gitlab-org--gitlab-foss/db/migrate/limits_to_mysql.rb

class LimitsToMysql < ActiveRecord::Migration[4.2]
  def up
    return unless ActiveRecord::Base.configurations[Rails.env]['adapter'] =~ /^mysql/

    change_column :snippets, :content, :text, limit: 2147483647
    change_column :notes, :st_diff, :text, limit: 2147483647
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 02:27:31 -05:00			`class LimitsToMysql < ActiveRecord::Migration[4.2]`
Adjust MySQL limits for existing installations 2014-04-15 10:26:15 -04:00			`def up`
Move the adapter check to the migration 2014-04-16 05:26:02 -04:00			`return unless ActiveRecord::Base.configurations[Rails.env]['adapter'] =~ /^mysql/`
Adjust MySQL limits for existing installations 2014-04-15 10:26:15 -04:00
			`change_column :snippets, :content, :text, limit: 2147483647`
			`change_column :notes, :st_diff, :text, limit: 2147483647`
			`end`
			`end`