instance method `perform_calculation`

Ruby on Rails 3.0.20

Since v3.0.20 Private

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

perform_calculation(operation, column_name, options = {})

No documentation comment.

Parameters

operation req
column_name req
options opt = {}

Source

# File activerecord/lib/active_record/relation/calculations.rb, line 161
    def perform_calculation(operation, column_name, options = {})
      operation = operation.to_s.downcase

      distinct = nil

      if operation == "count"
        column_name ||= (select_for_count || :all)

        if arel.join_sql =~ /LEFT OUTER/i
          distinct = true
          column_name = @klass.primary_key if column_name == :all
        end

        distinct = nil if column_name =~ /\s*DISTINCT\s+/i
      end

      distinct = options[:distinct] || distinct

      if @group_values.any?
        execute_grouped_calculation(operation, column_name, distinct)
      else
        execute_simple_calculation(operation, column_name, distinct)
      end
    end

Defined in activerecord/lib/active_record/relation/calculations.rb line 161 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::Calculations

Signature

Parameters