Class | Sequel::Model::Associations::ManyToManyAssociationReflection |
In: |
lib/sequel/model/associations.rb
|
Parent: | AssociationReflection |
The alias to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 273 273: def associated_key_alias 274: self[:left_key_alias] 275: end
The column to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 278 278: def associated_key_column 279: self[:left_key] 280: end
The table containing the column to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 283 283: def associated_key_table 284: self[:join_table] 285: end
many_to_many associations can only have associated objects if none of the :left_primary_keys options have a nil value.
# File lib/sequel/model/associations.rb, line 289 289: def can_have_associated_objects?(obj) 290: !self[:left_primary_keys].any?{|k| obj.send(k).nil?} 291: end
The default associated key alias(es) to use when eager loading associations via eager.
# File lib/sequel/model/associations.rb, line 295 295: def default_associated_key_alias 296: self[:uses_left_composite_keys] ? (0...self[:left_keys].length).map{|i| "x_foreign_key_#{i}_x""x_foreign_key_#{i}_x"} : :x_foreign_key_x 297: end
Default name symbol for the join table.
# File lib/sequel/model/associations.rb, line 300 300: def default_join_table 301: [self[:class_name], self[:model].name].map{|i| underscore(pluralize(demodulize(i)))}.sort.join('_').to_sym 302: end
Default foreign key name symbol for key in join table that points to current table‘s primary key (or :left_primary_key column).
# File lib/sequel/model/associations.rb, line 306 306: def default_left_key 307: 308: "#{underscore(demodulize(self[:model].name))}_id" 309: end
Default foreign key name symbol for foreign key in join table that points to the association‘s table‘s primary key (or :right_primary_key column).
# File lib/sequel/model/associations.rb, line 312 312: def default_right_key 313: 314: "#{singularize(self[:name])}_id" 315: end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 317 317: def eager_loader_key 318: self[:left_primary_key] 319: end
Whether the associated object needs a primary key to be added/removed, true for many_to_many associations.
# File lib/sequel/model/associations.rb, line 328 328: def need_associated_primary_key? 329: true 330: end
Returns the reciprocal association symbol, if one exists.
# File lib/sequel/model/associations.rb, line 333 333: def reciprocal 334: return self[:reciprocal] if include?(:reciprocal) 335: left_keys = self[:left_keys] 336: right_keys = self[:right_keys] 337: join_table = self[:join_table] 338: associated_class.all_association_reflections.each do |assoc_reflect| 339: if assoc_reflect[:type] == :many_to_many && assoc_reflect[:left_keys] == right_keys && 340: assoc_reflect[:right_keys] == left_keys && assoc_reflect[:join_table] == join_table && 341: assoc_reflect.associated_class == self[:model] 342: return self[:reciprocal] = assoc_reflect[:name] 343: end 344: end 345: self[:reciprocal] = nil 346: end
The primary key column(s) to use in the associated table (can be symbol or array).
# File lib/sequel/model/associations.rb, line 349 349: def right_primary_key 350: self[:right_primary_key] ||= associated_class.primary_key 351: end
The primary key columns to use in the associated table (always array).
# File lib/sequel/model/associations.rb, line 354 354: def right_primary_keys 355: self[:right_primary_keys] ||= Array(right_primary_key) 356: end
The columns to select when loading the association, associated_class.table_name.* by default.
# File lib/sequel/model/associations.rb, line 360 360: def select 361: return self[:select] if include?(:select) 362: self[:select] ||= Sequel::SQL::ColumnAll.new(associated_class.table_name) 363: end