# File lib/sequel/model/associations.rb 1031 def primary_key 1032 self[:primary_key] 1033 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 981 def apply_eager_graph_limit_strategy(strategy, ds) 982 case strategy 983 when :correlated_subquery 984 apply_correlated_subquery_limit_strategy(ds) 985 else 986 super 987 end 988 end
The keys in the associated model's table related to this association
# File lib/sequel/model/associations.rb 991 def associated_object_keys 992 self[:keys] 993 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 997 def can_have_associated_objects?(obj) 998 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 999 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 1002 def cloneable?(ref) 1003 ref[:type] == :one_to_many || ref[:type] == :one_to_one 1004 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 1008 def default_key 1009 :"#{underscore(demodulize(self[:model].name))}_id" 1010 end
# File lib/sequel/model/associations.rb 1015 def finalize_settings 1016 FINALIZE_SETTINGS 1017 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1020 def handle_silent_modification_failure? 1021 self[:raise_on_save_failure] == false 1022 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1025 def predicate_key 1026 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1027 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 1036 def qualified_primary_key 1037 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1038 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 1042 def reciprocal_array? 1043 false 1044 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1047 def remove_before_destroy? 1048 false 1049 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1052 def remove_should_check_existing? 1053 true 1054 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1057 def set_reciprocal_to_self? 1058 true 1059 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 1081 def apply_filter_by_associations_limit_strategy(ds) 1082 case filter_by_associations_limit_strategy 1083 when :correlated_subquery 1084 apply_correlated_subquery_limit_strategy(ds) 1085 else 1086 super 1087 end 1088 end
# File lib/sequel/model/associations.rb 1090 def filter_by_associations_conditions_associated_keys 1091 qualify(associated_class.table_name, self[:keys]) 1092 end
# File lib/sequel/model/associations.rb 1094 def filter_by_associations_conditions_key 1095 qualify(self[:model].table_name, self[:primary_key_column]) 1096 end
# File lib/sequel/model/associations.rb 1098 def filter_by_associations_limit_alias_key 1099 Array(filter_by_associations_limit_key) 1100 end
# File lib/sequel/model/associations.rb 1102 def filter_by_associations_limit_aliases 1103 filter_by_associations_limit_alias_key.map(&:column) 1104 end
# File lib/sequel/model/associations.rb 1106 def filter_by_associations_limit_key 1107 qualify(associated_class.table_name, associated_class.primary_key) 1108 end
# File lib/sequel/model/associations.rb 1110 def predicate_key_methods 1111 self[:primary_keys] 1112 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1114 def reciprocal_association?(assoc_reflect) 1115 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1116 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1119 def reciprocal_type 1120 :many_to_one 1121 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 1126 def true_eager_graph_limit_strategy 1127 r = super 1128 ds = associated_dataset 1129 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?) 1130 :correlated_subquery 1131 else 1132 r 1133 end 1134 end