# File lib/sequel/model/associations.rb 1019 def primary_key 1020 self[:primary_key] 1021 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 969 def apply_eager_graph_limit_strategy(strategy, ds) 970 case strategy 971 when :correlated_subquery 972 apply_correlated_subquery_limit_strategy(ds) 973 else 974 super 975 end 976 end
The keys in the associated model's table related to this association
# File lib/sequel/model/associations.rb 979 def associated_object_keys 980 self[:keys] 981 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 985 def can_have_associated_objects?(obj) 986 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 987 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 990 def cloneable?(ref) 991 ref[:type] == :one_to_many || ref[:type] == :one_to_one 992 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 996 def default_key 997 :"#{underscore(demodulize(self[:model].name))}_id" 998 end
# File lib/sequel/model/associations.rb 1003 def finalize_settings 1004 FINALIZE_SETTINGS 1005 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1008 def handle_silent_modification_failure? 1009 self[:raise_on_save_failure] == false 1010 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1013 def predicate_key 1014 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1015 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 1024 def qualified_primary_key 1025 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1026 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 1030 def reciprocal_array? 1031 false 1032 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1035 def remove_before_destroy? 1036 false 1037 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1040 def remove_should_check_existing? 1041 true 1042 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1045 def set_reciprocal_to_self? 1046 true 1047 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 1069 def apply_filter_by_associations_limit_strategy(ds) 1070 case filter_by_associations_limit_strategy 1071 when :correlated_subquery 1072 apply_correlated_subquery_limit_strategy(ds) 1073 else 1074 super 1075 end 1076 end
# File lib/sequel/model/associations.rb 1078 def filter_by_associations_conditions_associated_keys 1079 qualify(associated_class.table_name, self[:keys]) 1080 end
# File lib/sequel/model/associations.rb 1082 def filter_by_associations_conditions_key 1083 qualify(self[:model].table_name, self[:primary_key_column]) 1084 end
# File lib/sequel/model/associations.rb 1086 def filter_by_associations_limit_alias_key 1087 Array(filter_by_associations_limit_key) 1088 end
# File lib/sequel/model/associations.rb 1090 def filter_by_associations_limit_aliases 1091 filter_by_associations_limit_alias_key.map(&:column) 1092 end
# File lib/sequel/model/associations.rb 1094 def filter_by_associations_limit_key 1095 qualify(associated_class.table_name, associated_class.primary_key) 1096 end
# File lib/sequel/model/associations.rb 1098 def predicate_key_methods 1099 self[:primary_keys] 1100 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1102 def reciprocal_association?(assoc_reflect) 1103 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1104 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1107 def reciprocal_type 1108 :many_to_one 1109 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 1114 def true_eager_graph_limit_strategy 1115 r = super 1116 ds = associated_dataset 1117 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?) 1118 :correlated_subquery 1119 else 1120 r 1121 end 1122 end