| Class | Sequel::Model::Associations::ManyToOneAssociationReflection |
| In: |
lib/sequel/model/associations.rb
|
| Parent: | AssociationReflection |
| 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 |
many_to_one associations can only have associated objects if none of the :keys options have a nil value.
# 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.
# 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.
# 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.
# 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
# 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
# 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
# File lib/sequel/model/associations.rb, line 835
835: def filter_by_associations_limit_strategy
836: nil
837: end
# 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
# 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).
# 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.
# 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.
# 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).
# 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
# 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.
# 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.
# File lib/sequel/model/associations.rb, line 891
891: def returns_array?
892: false
893: end