# File lib/sequel/model/associations.rb 1028 def primary_key 1029 self[:primary_key] 1030 end
class Sequel::Model::Associations::OneToManyAssociationReflection
Constants
- FINALIZE_SETTINGS
Public Instance Methods
Support a correlated subquery limit strategy when using eager_graph.
Sequel::Model::Associations::AssociationReflection#apply_eager_graph_limit_strategy
# File lib/sequel/model/associations.rb 978 def apply_eager_graph_limit_strategy(strategy, ds) 979 case strategy 980 when :correlated_subquery 981 apply_correlated_subquery_limit_strategy(ds) 982 else 983 super 984 end 985 end
The keys in the associated model's table related to this association
# File lib/sequel/model/associations.rb 988 def associated_object_keys 989 self[:keys] 990 end
one_to_many associations can only have associated objects if none of the :keys options have a nil value.
# File lib/sequel/model/associations.rb 994 def can_have_associated_objects?(obj) 995 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 996 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 999 def cloneable?(ref) 1000 ref[:type] == :one_to_many || ref[:type] == :one_to_one 1001 end
Default foreign key name symbol for key in associated table that points to current table's primary key.
# File lib/sequel/model/associations.rb 1005 def default_key 1006 :"#{underscore(demodulize(self[:model].name))}_id" 1007 end
# File lib/sequel/model/associations.rb 1012 def finalize_settings 1013 FINALIZE_SETTINGS 1014 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1017 def handle_silent_modification_failure? 1018 self[:raise_on_save_failure] == false 1019 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1022 def predicate_key 1023 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1024 end
The column in the current table that the key in the associated table references.
primary_key
qualified by the current table
# File lib/sequel/model/associations.rb 1033 def qualified_primary_key 1034 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1035 end
Whether the reciprocal of this association returns an array of objects instead of a single object, false for a one_to_many association.
# File lib/sequel/model/associations.rb 1039 def reciprocal_array? 1040 false 1041 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1044 def remove_before_destroy? 1045 false 1046 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1049 def remove_should_check_existing? 1050 true 1051 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1054 def set_reciprocal_to_self? 1055 true 1056 end
Private Instance Methods
Support correlated subquery strategy when filtering by limited associations.
Sequel::Model::Associations::AssociationReflection#apply_filter_by_associations_limit_strategy
# File lib/sequel/model/associations.rb 1078 def apply_filter_by_associations_limit_strategy(ds) 1079 case filter_by_associations_limit_strategy 1080 when :correlated_subquery 1081 apply_correlated_subquery_limit_strategy(ds) 1082 else 1083 super 1084 end 1085 end
# File lib/sequel/model/associations.rb 1087 def filter_by_associations_conditions_associated_keys 1088 qualify(associated_class.table_name, self[:keys]) 1089 end
# File lib/sequel/model/associations.rb 1091 def filter_by_associations_conditions_key 1092 qualify(self[:model].table_name, self[:primary_key_column]) 1093 end
# File lib/sequel/model/associations.rb 1095 def filter_by_associations_limit_alias_key 1096 Array(filter_by_associations_limit_key) 1097 end
# File lib/sequel/model/associations.rb 1099 def filter_by_associations_limit_aliases 1100 filter_by_associations_limit_alias_key.map(&:column) 1101 end
# File lib/sequel/model/associations.rb 1103 def filter_by_associations_limit_key 1104 qualify(associated_class.table_name, associated_class.primary_key) 1105 end
# File lib/sequel/model/associations.rb 1107 def predicate_key_methods 1108 self[:primary_keys] 1109 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1111 def reciprocal_association?(assoc_reflect) 1112 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1113 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1116 def reciprocal_type 1117 :many_to_one 1118 end
Support automatic use of correlated subqueries if :ruby option is best available option, the database supports them, and either the associated class has a non-composite primary key or the database supports multiple columns in IN.
Sequel::Model::Associations::AssociationReflection#true_eager_graph_limit_strategy
# File lib/sequel/model/associations.rb 1123 def true_eager_graph_limit_strategy 1124 r = super 1125 ds = associated_dataset 1126 if r == :ruby && ds.supports_limits_in_correlated_subqueries? && (Array(associated_class.primary_key).length == 1 || ds.supports_multiple_column_in?) && (!offset || ds.supports_offsets_in_correlated_subqueries?) 1127 :correlated_subquery 1128 else 1129 r 1130 end 1131 end