# File lib/sequel/model/associations.rb 1040 def primary_key 1041 self[:primary_key] 1042 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 990 def apply_eager_graph_limit_strategy(strategy, ds) 991 case strategy 992 when :correlated_subquery 993 apply_correlated_subquery_limit_strategy(ds) 994 else 995 super 996 end 997 end
The keys in the associated model’s table related to this association
# File lib/sequel/model/associations.rb 1000 def associated_object_keys 1001 self[:keys] 1002 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 1006 def can_have_associated_objects?(obj) 1007 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 1008 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 1011 def cloneable?(ref) 1012 ref[:type] == :one_to_many || ref[:type] == :one_to_one 1013 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 1017 def default_key 1018 :"#{underscore(demodulize(self[:model].name))}_id" 1019 end
# File lib/sequel/model/associations.rb 1024 def finalize_settings 1025 FINALIZE_SETTINGS 1026 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1029 def handle_silent_modification_failure? 1030 self[:raise_on_save_failure] == false 1031 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1034 def predicate_key 1035 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1036 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 1045 def qualified_primary_key 1046 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1047 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 1051 def reciprocal_array? 1052 false 1053 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1056 def remove_before_destroy? 1057 false 1058 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1061 def remove_should_check_existing? 1062 true 1063 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1066 def set_reciprocal_to_self? 1067 true 1068 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 1090 def apply_filter_by_associations_limit_strategy(ds) 1091 case filter_by_associations_limit_strategy 1092 when :correlated_subquery 1093 apply_correlated_subquery_limit_strategy(ds) 1094 else 1095 super 1096 end 1097 end
# File lib/sequel/model/associations.rb 1099 def filter_by_associations_conditions_associated_keys 1100 qualify(associated_class.table_name, self[:keys]) 1101 end
# File lib/sequel/model/associations.rb 1103 def filter_by_associations_conditions_key 1104 qualify(self[:model].table_name, self[:primary_key_column]) 1105 end
# File lib/sequel/model/associations.rb 1107 def filter_by_associations_limit_alias_key 1108 Array(filter_by_associations_limit_key) 1109 end
# File lib/sequel/model/associations.rb 1111 def filter_by_associations_limit_aliases 1112 filter_by_associations_limit_alias_key.map(&:column) 1113 end
# File lib/sequel/model/associations.rb 1115 def filter_by_associations_limit_key 1116 qualify(associated_class.table_name, associated_class.primary_key) 1117 end
# File lib/sequel/model/associations.rb 1119 def predicate_key_methods 1120 self[:primary_keys] 1121 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1123 def reciprocal_association?(assoc_reflect) 1124 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1125 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1128 def reciprocal_type 1129 :many_to_one 1130 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 1135 def true_eager_graph_limit_strategy 1136 r = super 1137 ds = associated_dataset 1138 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?) 1139 :correlated_subquery 1140 else 1141 r 1142 end 1143 end