Ruby Critic

Updated 2019-03-26 04:25:03 +0000

db/migrate / 20190325204926_add_domain_index_to_archived_signatures.rb

24 lines of codes

3 methods

2.8 complexity/method

1 churn

8.25 complexity

0 duplications

code
1 smell

class AddDomainIndexToArchivedSignatures < ActiveRecord::Migration                                        IrresponsibleModule              
      AddDomainIndexToArchivedSignatures has no descriptive comment          
  
  disable_ddl_transaction!

  def up
    unless index_exists?(:archived_signatures, :domain)
      execute <<-SQL
        CREATE INDEX CONCURRENTLY index_archived_signatures_on_domain
        ON archived_signatures USING btree (SUBSTRING(email FROM POSITION('@' IN email) + 1));
      SQL
    end
  end

  def down
    if index_exists?(:archived_signatures, :domain)
      remove_index :archived_signatures, :domain
    end
  end

  private

  def index_exists?(table, names)
    select_value("SELECT to_regclass('index_#{table}_on_#{Array(names).join('_and_')}')")
  end
end