method

expand_hash_conditions_for_aggregates

v4.2.7 - Show latest stable - 0 notes - Class: ClassMethods

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What's this?

expand_hash_conditions_for_aggregates(attrs) protected

Accepts a hash of SQL conditions and replaces those attributes that correspond to a composed_of relationship with their expanded aggregate attribute values. Given:

class Person < ActiveRecord::Base
  composed_of :address, class_name: "Address",
    mapping: [%w(address_street street), %w(address_city city)]
end

Then:

{ address: Address.new("813 abc st.", "chicago") }
  # => { address_street: "813 abc st.", address_city: "chicago" }

Show source

# File activerecord/lib/active_record/sanitization.rb, line 56
      def expand_hash_conditions_for_aggregates(attrs)
        expanded_attrs = {}
        attrs.each do |attr, value|
          if aggregation = reflect_on_aggregation(attr.to_sym)
            mapping = aggregation.mapping
            mapping.each do |field_attr, aggregate_attr|
              if mapping.size == 1 && !value.respond_to?(aggregate_attr)
                expanded_attrs[field_attr] = value
              else
                expanded_attrs[field_attr] = value.send(aggregate_attr)
              end
            end
          else
            expanded_attrs[attr] = value
          end
        end
        expanded_attrs
      end

expand_hash_conditions_for_aggregates

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