Class: Sequel::Model::Associations::ManyToManyAssociationReflection

The alias to use for the associated key when eagerly loading

     # File lib/sequel/model/associations.rb, line 531
531:         def associated_key_alias
532:           self[:left_key_alias]
533:         end

associated_key_column()

The column to use for the associated key when eagerly loading

[Source]

     # File lib/sequel/model/associations.rb, line 536
536:         def associated_key_column
537:           self[:left_key]
538:         end

associated_key_table()

Alias for join_table_alias

associated_object_keys()

Alias of right_primary_keys

[Source]

     # File lib/sequel/model/associations.rb, line 541
541:         def associated_object_keys
542:           right_primary_keys
543:         end

can_have_associated_objects?(obj)

many_to_many associations can only have associated objects if none of the :left_primary_keys options have a nil value.

[Source]

     # File lib/sequel/model/associations.rb, line 547
547:         def can_have_associated_objects?(obj)
548:           !self[:left_primary_keys].any?{|k| obj.send(k).nil?}
549:         end

default_associated_key_alias()

The default associated key alias(es) to use when eager loading associations via eager.

[Source]

     # File lib/sequel/model/associations.rb, line 553
553:         def default_associated_key_alias
554:           self[:uses_left_composite_keys] ? (0...self[:left_keys].length).map{|i| "x_foreign_key_#{i}_x""x_foreign_key_#{i}_x"} : :x_foreign_key_x
555:         end

default_join_table()

Default name symbol for the join table.

[Source]

     # File lib/sequel/model/associations.rb, line 558
558:         def default_join_table
559:           [self[:class_name], self[:model].name].map{|i| underscore(pluralize(demodulize(i)))}.sort.join('_').to_sym
560:         end

default_left_key()

Default foreign key name symbol for key in join table that points to current table‘s primary key (or :left_primary_key column).

[Source]

     # File lib/sequel/model/associations.rb, line 564
564:         def default_left_key
565: 
566:           "#{underscore(demodulize(self[:model].name))}_id"
567:         end

default_right_key()

Default foreign key name symbol for foreign key in join table that points to the association‘s table‘s primary key (or :right_primary_key column).

[Source]

     # File lib/sequel/model/associations.rb, line 570
570:         def default_right_key
571: 
572:           "#{singularize(self[:name])}_id"
573:         end

eager_loading_use_associated_key?()

many_to_many associations need to select a key in an associated table to eagerly load

[Source]

     # File lib/sequel/model/associations.rb, line 587
587:         def eager_loading_use_associated_key?
588:           true
589:         end

join_table_alias()

The join table itself, unless it is aliased, in which case this is the alias.

[Source]

     # File lib/sequel/model/associations.rb, line 599
599:         def join_table_alias
600:           cached_fetch(:join_table_alias) do
601:             s, a = split_join_table_alias
602:             a || s
603:           end
604:         end

join_table_source()

The source of the join table. This is the join table itself, unless it is aliased, in which case it is the unaliased part.

[Source]

     # File lib/sequel/model/associations.rb, line 593
593:         def join_table_source
594:           cached_fetch(:join_table_source){split_join_table_alias[0]}
595:         end

need_associated_primary_key?()

Whether the associated object needs a primary key to be added/removed, true for many_to_many associations.

[Source]

     # File lib/sequel/model/associations.rb, line 609
609:         def need_associated_primary_key?
610:           true
611:         end

predicate_key()

The hash key to use for the eager loading predicate (left side of IN (1, 2, 3)). The left key qualified by the join table.

[Source]

     # File lib/sequel/model/associations.rb, line 576
576:         def predicate_key
577:           cached_fetch(:predicate_key){qualify(join_table_alias, self[:left_key])}
578:         end

qualified_left_key()

Alias for predicate_key

qualified_right_key()

The right key qualified by the join table.

[Source]

     # File lib/sequel/model/associations.rb, line 582
582:         def qualified_right_key
583:           cached_fetch(:qualified_right_key){qualify(join_table_alias, self[:right_key])}
584:         end

qualified_right_primary_key()

right_primary_key qualified by the associated table

[Source]

     # File lib/sequel/model/associations.rb, line 614
614:         def qualified_right_primary_key
615:           cached_fetch(:qualified_right_primary_key){qualify_assoc(right_primary_key)}
616:         end

right_primary_key()

The primary key column(s) to use in the associated table (can be symbol or array).

[Source]

     # File lib/sequel/model/associations.rb, line 619
619:         def right_primary_key
620:           cached_fetch(:right_primary_key){associated_class.primary_key}
621:         end

right_primary_key_method()

The method symbol or array of method symbols to call on the associated objects to get the foreign key values for the join table.

[Source]

     # File lib/sequel/model/associations.rb, line 630
630:         def right_primary_key_method
631:           cached_fetch(:right_primary_key_method){right_primary_key}
632:         end

right_primary_key_methods()

The array of method symbols to call on the associated objects to get the foreign key values for the join table.

[Source]

     # File lib/sequel/model/associations.rb, line 636
636:         def right_primary_key_methods
637:           cached_fetch(:right_primary_key_methods){Array(right_primary_key_method)}
638:         end

right_primary_keys()

The primary key columns to use in the associated table (always array).

[Source]

     # File lib/sequel/model/associations.rb, line 624
624:         def right_primary_keys
625:           cached_fetch(:right_primary_keys){Array(right_primary_key)}
626:         end

select()

The columns to select when loading the association, associated_class.table_name.* by default.

[Source]

     # File lib/sequel/model/associations.rb, line 641
641:         def select
642:          cached_fetch(:select){Sequel::SQL::ColumnAll.new(associated_class.table_name)}
643:         end

Methods

Public Instance methods