Class | Sequel::Model::Associations::ManyToManyAssociationReflection |
In: |
lib/sequel/model/associations.rb
|
Parent: | AssociationReflection |
Default name symbol for the join table.
# File lib/sequel/model/associations.rb, line 227 227: def default_join_table 228: [self[:class_name], self[:model].name].map{|i| underscore(pluralize(demodulize(i)))}.sort.join('_').to_sym 229: 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 233 233: def default_left_key 234: 235: "#{underscore(demodulize(self[:model].name))}_id" 236: 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 239 239: def default_right_key 240: 241: "#{singularize(self[:name])}_id" 242: end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 244 244: def eager_loader_key 245: self[:left_primary_key] 246: 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 250 250: def need_associated_primary_key? 251: true 252: end
Returns the reciprocal association symbol, if one exists.
# File lib/sequel/model/associations.rb, line 255 255: def reciprocal 256: return self[:reciprocal] if include?(:reciprocal) 257: left_key = self[:left_key] 258: right_key = self[:right_key] 259: join_table = self[:join_table] 260: associated_class.all_association_reflections.each do |assoc_reflect| 261: if assoc_reflect[:type] == :many_to_many && assoc_reflect[:left_key] == right_key \ 262: && assoc_reflect[:right_key] == left_key && assoc_reflect[:join_table] == join_table 263: return self[:reciprocal] = assoc_reflect[:name] 264: end 265: end 266: self[:reciprocal] = nil 267: end
The primary key column to use in the associated table.
# File lib/sequel/model/associations.rb, line 270 270: def right_primary_key 271: self[:right_primary_key] ||= associated_class.primary_key 272: end
The columns to select when loading the association, associated_class.table_name.* by default.
# File lib/sequel/model/associations.rb, line 275 275: def select 276: return self[:select] if include?(:select) 277: self[:select] ||= Sequel::SQL::ColumnAll.new(associated_class.table_name) 278: end