Class: ActiveRecord::Reflection::AggregateReflection

Do not use. This class is for internal use only.

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `MacroReflection`, `AbstractReflection`
Instance Chain: self, `MacroReflection`, `AbstractReflection`
Inherits:	ActiveRecord::Reflection::MacroReflection `::Object` ActiveRecord::Reflection::AbstractReflection ActiveRecord::Reflection::MacroReflection ActiveRecord::Reflection::AggregateReflection
Defined in:	activerecord/lib/active_record/reflection.rb

Overview

Holds all the metadata about an aggregation as it was specified in the Active Record class.

.new

.new

#active_record, #autosave=,
#name	Returns the name of the macro.
#options	Returns the hash of options used for the macro.
#scope, #plural_name

#counter_must_be_updated_by_has_many?,
#has_active_cached_counter?	Returns whether this association has a counter cache and its column values were backfilled (and so it is used internally by methods like `size`/`any?`/etc).
#has_cached_counter?	Returns whether this association has a counter cache.
#inverse_updates_counter_cache?	Alias for AbstractReflection#inverse_which_updates_counter_cache.
#inverse_updates_counter_in_memory?, #strict_loading?, #through_reflection?

#==	Returns `true` if `self` and `other_aggregation` have the same `name` attribute, `active_record` attribute, and `other_aggregation` has an options hash assigned to it.
#compute_class,
#klass	Returns the class for the macro.
#scope_for, #derive_class_name, #normalize_options, #_klass

#alias_candidate,
#build_association	Returns a new, unsaved instance of the associated class.
#build_scope, #chain, #check_validity_of_inverse!,
#class_name	Returns the class name for the macro.
#constraints, #counter_cache_column, #inverse_of,
#inverse_which_updates_counter_cache	We need to avoid the following situation:
#join_scope, #join_scopes, #klass_join_scope,
#scopes	Returns a list of scopes that should be applied for this `::ActiveRecord::Reflection` object when querying the database.
#strict_loading_violation_message, #table_name,
#actual_source_reflection	FIXME: this is a horrible name.
#ensure_option_not_given_as_class!, #primary_key

[ GitHub ]

# File 'activerecord/lib/active_record/reflection.rb', line 485


def mapping
  mapping = options[:mapping] || [name, name]
  mapping.first.is_a?(Array) ? mapping : [mapping]
end