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 803
803:         def can_have_associated_objects?(obj)
804:           !self[:keys].any?{|k| obj.get_column_value(k).nil?}
805:         end

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

[Source]

     # File lib/sequel/model/associations.rb, line 808
808:         def dataset_need_primary_key?
809:           false
810:         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 814
814:         def default_key
815: 
816:           "#{self[:name]}_id"
817:         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 820
820:         def eager_graph_lazy_dataset?
821:           self[:key].nil?
822:         end

many_to_one associations don‘t need an eager_graph limit strategy

[Source]

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

many_to_one associations don‘t need an eager limit strategy

[Source]

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

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

[Source]

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

[Source]

     # File lib/sequel/model/associations.rb, line 847
847:         def finalize_settings
848:           FINALIZE_SETTINGS
849:         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 852
852:         def predicate_key
853:           cached_fetch(:predicate_key){qualified_primary_key}
854:         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 857
857:         def primary_key
858:          cached_fetch(:primary_key){associated_class.primary_key || raise(Error, "no primary key specified for #{associated_class.inspect}")}
859:         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 869
869:         def primary_key_method
870:          cached_fetch(:primary_key_method){primary_key}
871:         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 875
875:         def primary_key_methods
876:          cached_fetch(:primary_key_methods){Array(primary_key_method)}
877:         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 862
862:         def primary_keys
863:          cached_fetch(:primary_keys){Array(primary_key)}
864:         end

primary_key qualified by the associated table

[Source]

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

True only if the reciprocal is a one_to_many association.

[Source]

     # File lib/sequel/model/associations.rb, line 885
885:         def reciprocal_array?
886:           !set_reciprocal_to_self?
887:         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 891
891:         def returns_array?
892:           false
893:         end

True only if the reciprocal is a one_to_one association.

[Source]

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

[Validate]