# File lib/sequel/model/associations.rb 1014 def primary_key 1015 self[:primary_key] 1016 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 964 def apply_eager_graph_limit_strategy(strategy, ds) 965 case strategy 966 when :correlated_subquery 967 apply_correlated_subquery_limit_strategy(ds) 968 else 969 super 970 end 971 end
The keys in the associated model's table related to this association
# File lib/sequel/model/associations.rb 974 def associated_object_keys 975 self[:keys] 976 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 980 def can_have_associated_objects?(obj) 981 !self[:primary_keys].any?{|k| obj.get_column_value(k).nil?} 982 end
one_to_many and one_to_one associations can be clones
# File lib/sequel/model/associations.rb 985 def cloneable?(ref) 986 ref[:type] == :one_to_many || ref[:type] == :one_to_one 987 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 991 def default_key 992 :"#{underscore(demodulize(self[:model].name))}_id" 993 end
# File lib/sequel/model/associations.rb 998 def finalize_settings 999 FINALIZE_SETTINGS 1000 end
Handle silent failure of add/remove methods if raise_on_save_failure is false.
# File lib/sequel/model/associations.rb 1003 def handle_silent_modification_failure? 1004 self[:raise_on_save_failure] == false 1005 end
The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))
# File lib/sequel/model/associations.rb 1008 def predicate_key 1009 cached_fetch(:predicate_key){qualify_assoc(self[:key])} 1010 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 1019 def qualified_primary_key 1020 cached_fetch(:qualified_primary_key){qualify_cur(primary_key)} 1021 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 1025 def reciprocal_array? 1026 false 1027 end
Destroying one_to_many associated objects automatically deletes the foreign key.
# File lib/sequel/model/associations.rb 1030 def remove_before_destroy? 1031 false 1032 end
The one_to_many association needs to check that an object to be removed already is associated.
# File lib/sequel/model/associations.rb 1035 def remove_should_check_existing? 1036 true 1037 end
One to many associations set the reciprocal to self when loading associated records.
# File lib/sequel/model/associations.rb 1040 def set_reciprocal_to_self? 1041 true 1042 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 1064 def apply_filter_by_associations_limit_strategy(ds) 1065 case filter_by_associations_limit_strategy 1066 when :correlated_subquery 1067 apply_correlated_subquery_limit_strategy(ds) 1068 else 1069 super 1070 end 1071 end
# File lib/sequel/model/associations.rb 1073 def filter_by_associations_conditions_associated_keys 1074 qualify(associated_class.table_name, self[:keys]) 1075 end
# File lib/sequel/model/associations.rb 1077 def filter_by_associations_conditions_key 1078 qualify(self[:model].table_name, self[:primary_key_column]) 1079 end
# File lib/sequel/model/associations.rb 1081 def filter_by_associations_limit_alias_key 1082 Array(filter_by_associations_limit_key) 1083 end
# File lib/sequel/model/associations.rb 1085 def filter_by_associations_limit_aliases 1086 filter_by_associations_limit_alias_key.map(&:column) 1087 end
# File lib/sequel/model/associations.rb 1089 def filter_by_associations_limit_key 1090 qualify(associated_class.table_name, associated_class.primary_key) 1091 end
# File lib/sequel/model/associations.rb 1093 def predicate_key_methods 1094 self[:primary_keys] 1095 end
Sequel::Model::Associations::AssociationReflection#reciprocal_association?
# File lib/sequel/model/associations.rb 1097 def reciprocal_association?(assoc_reflect) 1098 super && self[:keys] == assoc_reflect[:keys] && primary_key == assoc_reflect.primary_key 1099 end
The reciprocal type of a one_to_many association is a many_to_one association.
# File lib/sequel/model/associations.rb 1102 def reciprocal_type 1103 :many_to_one 1104 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 1109 def true_eager_graph_limit_strategy 1110 r = super 1111 ds = associated_dataset 1112 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?) 1113 :correlated_subquery 1114 else 1115 r 1116 end 1117 end