method

column_alias_for

v1.2.6 - Show latest stable - Class: ActiveRecord::Calculations::ClassMethods

column_alias_for(*keys)

private

Converts a given key to the value that the database adapter returns as as a usable column name.

  users.id #=> users_id
  sum(id) #=> sum_id
  count(distinct users.id) #=> count_distinct_users_id
  count(*) #=> count_all

# File activerecord/lib/active_record/calculations.rb, line 251
        def column_alias_for(*keys)
          connection.table_alias_for(keys.join(' ').downcase.gsub(/\*/, 'all').gsub(/\W+/, ' ').strip.gsub(/ +/, '_'))
        end

column_alias_for

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