# File lib/sequel/model/associations.rb 1072 def primary_key 1073 self[:primary_key] 1074 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 1022 def apply_eager_graph_limit_strategy(strategy, ds) 1023 case strategy 1024 when :correlated_subquery 1025 apply_correlated_subquery_limit_strategy(ds) 1026 else 1027 super 1028 end 1029 end
The keys in the associated model's table related to this association
# File lib/sequel/model/associations.rb 1032 def associated_object_keys 1033 self[:keys] 1034 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 1038 def can_have_associated_objects?(obj) 1039 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 1040 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 1043 def cloneable?(ref) 1044 ref[:type] == :one_to_many || ref[:type] == :one_to_one 1045 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 1049 def default_key 1050 :"#{underscore(demodulize(self[:model].name))}_id" 1051 end
# File lib/sequel/model/associations.rb 1056 def finalize_settings 1057 FINALIZE_SETTINGS 1058 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1061 def handle_silent_modification_failure? 1062 self[:raise_on_save_failure] == false 1063 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1066 def predicate_key 1067 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1068 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 1077 def qualified_primary_key 1078 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1079 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 1083 def reciprocal_array? 1084 false 1085 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1088 def remove_before_destroy? 1089 false 1090 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1093 def remove_should_check_existing? 1094 true 1095 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1098 def set_reciprocal_to_self? 1099 true 1100 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 1122 def apply_filter_by_associations_limit_strategy(ds) 1123 case filter_by_associations_limit_strategy 1124 when :correlated_subquery 1125 apply_correlated_subquery_limit_strategy(ds) 1126 else 1127 super 1128 end 1129 end
# File lib/sequel/model/associations.rb 1131 def filter_by_associations_conditions_associated_keys 1132 qualify(associated_class.table_name, self[:keys]) 1133 end
# File lib/sequel/model/associations.rb 1135 def filter_by_associations_conditions_key 1136 qualify(self[:model].table_name, self[:primary_key_column]) 1137 end
# File lib/sequel/model/associations.rb 1139 def filter_by_associations_limit_alias_key 1140 Array(filter_by_associations_limit_key) 1141 end
# File lib/sequel/model/associations.rb 1143 def filter_by_associations_limit_aliases 1144 filter_by_associations_limit_alias_key.map(&:column) 1145 end
# File lib/sequel/model/associations.rb 1147 def filter_by_associations_limit_key 1148 qualify(associated_class.table_name, associated_class.primary_key) 1149 end
# File lib/sequel/model/associations.rb 1151 def predicate_key_methods 1152 self[:primary_keys] 1153 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1155 def reciprocal_association?(assoc_reflect) 1156 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1157 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1160 def reciprocal_type 1161 :many_to_one 1162 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 1167 def true_eager_graph_limit_strategy 1168 r = super 1169 ds = associated_dataset 1170 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?) 1171 :correlated_subquery 1172 else 1173 r 1174 end 1175 end