Class Sequel::Model::Associations::ManyToOneAssociationReflection
In: lib/sequel/model/associations.rb
Parent: AssociationReflection

Methods

Constants

FINALIZE_SETTINGS = superclass::FINALIZE_SETTINGS.merge( :primary_key=>:primary_key, :primary_keys=>:primary_keys, :primary_key_method=>:primary_key_method, :primary_key_methods=>:primary_key_methods, :qualified_primary_key=>:qualified_primary_key, :reciprocal_type=>:reciprocal_type

Public Instance methods

associated_object_keys()

Alias for primary_keys

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

[Source]

     # File lib/sequel/model/associations.rb, line 802
802:         def can_have_associated_objects?(obj)
803:           !self[:keys].any?{|k| obj.get_column_value(k).nil?}
804:         end

Whether the dataset needs a primary key to function, false for many_to_one associations.

[Source]

     # File lib/sequel/model/associations.rb, line 807
807:         def dataset_need_primary_key?
808:           false
809:         end

Default foreign key name symbol for foreign key in current model‘s table that points to the given association‘s table‘s primary key.

[Source]

     # File lib/sequel/model/associations.rb, line 813
813:         def default_key
814: 
815:           "#{self[:name]}_id"
816:         end

Whether to eagerly graph a lazy dataset, true for many_to_one associations only if the key is nil.

[Source]

     # File lib/sequel/model/associations.rb, line 819
819:         def eager_graph_lazy_dataset?
820:           self[:key].nil?
821:         end

many_to_one associations don‘t need an eager_graph limit strategy

[Source]

     # File lib/sequel/model/associations.rb, line 824
824:         def eager_graph_limit_strategy(_)
825:           nil
826:         end

many_to_one associations don‘t need an eager limit strategy

[Source]

     # File lib/sequel/model/associations.rb, line 829
829:         def eager_limit_strategy
830:           nil
831:         end

many_to_one associations don‘t need a filter by associations limit strategy

[Source]

     # File lib/sequel/model/associations.rb, line 834
834:         def filter_by_associations_limit_strategy
835:           nil
836:         end

[Source]

     # File lib/sequel/model/associations.rb, line 846
846:         def finalize_settings
847:           FINALIZE_SETTINGS
848:         end

The expression to use on the left hand side of the IN lookup when eager loading

[Source]

     # File lib/sequel/model/associations.rb, line 851
851:         def predicate_key
852:           cached_fetch(:predicate_key){qualified_primary_key}
853:         end

The column(s) in the associated table that the key in the current table references (either a symbol or an array).

[Source]

     # File lib/sequel/model/associations.rb, line 856
856:         def primary_key
857:          cached_fetch(:primary_key){associated_class.primary_key || raise(Error, "no primary key specified for #{associated_class.inspect}")}
858:         end

The method symbol or array of method symbols to call on the associated object to get the value to use for the foreign keys.

[Source]

     # File lib/sequel/model/associations.rb, line 868
868:         def primary_key_method
869:          cached_fetch(:primary_key_method){primary_key}
870:         end

The array of method symbols to call on the associated object to get the value to use for the foreign keys.

[Source]

     # File lib/sequel/model/associations.rb, line 874
874:         def primary_key_methods
875:          cached_fetch(:primary_key_methods){Array(primary_key_method)}
876:         end

The columns in the associated table that the key in the current table references (always an array).

[Source]

     # File lib/sequel/model/associations.rb, line 861
861:         def primary_keys
862:          cached_fetch(:primary_keys){Array(primary_key)}
863:         end

primary_key qualified by the associated table

[Source]

     # File lib/sequel/model/associations.rb, line 879
879:         def qualified_primary_key
880:           cached_fetch(:qualified_primary_key){self[:qualify] == false ? primary_key : qualify_assoc(primary_key)}
881:         end

True only if the reciprocal is a one_to_many association.

[Source]

     # File lib/sequel/model/associations.rb, line 884
884:         def reciprocal_array?
885:           !set_reciprocal_to_self?
886:         end

Whether this association returns an array of objects instead of a single object, false for a many_to_one association.

[Source]

     # File lib/sequel/model/associations.rb, line 890
890:         def returns_array?
891:           false
892:         end

True only if the reciprocal is a one_to_one association.

[Source]

     # File lib/sequel/model/associations.rb, line 895
895:         def set_reciprocal_to_self?
896:           reciprocal
897:           reciprocal_type == :one_to_one
898:         end

[Validate]