The alias to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 299 def associated_key_alias self[:left_key_alias] end
The column to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 304 def associated_key_column self[:left_key] end
The table containing the column to use for the associated key when eagerly loading
# File lib/sequel/model/associations.rb, line 309 def associated_key_table self[:join_table] end
Alias of right_primary_keys
# File lib/sequel/model/associations.rb, line 314 def associated_object_keys right_primary_keys 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 320 def can_have_associated_objects?(obj) !self[:left_primary_keys].any?{|k| obj.send(k).nil?} end
The default associated key alias(es) to use when eager loading associations via eager.
# File lib/sequel/model/associations.rb, line 326 def default_associated_key_alias self[:uses_left_composite_keys] ? (0...self[:left_keys].length).map{|i| :"x_foreign_key_#{i}_x"} : :x_foreign_key_x end
Default name symbol for the join table.
# File lib/sequel/model/associations.rb, line 331 def default_join_table [self[:class_name], self[:model].name].map{|i| underscore(pluralize(demodulize(i)))}.sort.join('_').to_sym 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 337 def default_left_key :"#{underscore(demodulize(self[:model].name))}_id" 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 343 def default_right_key :"#{singularize(self[:name])}_id" end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 348 def eager_loader_key self[:eager_loader_key] ||= self[:left_primary_key] end
many_to_many associations need to select a key in an associated table to eagerly load
# File lib/sequel/model/associations.rb, line 353 def eager_loading_use_associated_key? true 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 359 def need_associated_primary_key? true end
Returns the reciprocal association symbol, if one exists.
# File lib/sequel/model/associations.rb, line 364 def reciprocal return self[:reciprocal] if include?(:reciprocal) left_keys = self[:left_keys] right_keys = self[:right_keys] join_table = self[:join_table] associated_class.all_association_reflections.each do |assoc_reflect| if assoc_reflect[:type] == :many_to_many && assoc_reflect[:left_keys] == right_keys && assoc_reflect[:right_keys] == left_keys && assoc_reflect[:join_table] == join_table && assoc_reflect.associated_class == self[:model] return self[:reciprocal] = assoc_reflect[:name] end end self[:reciprocal] = nil end
The primary key column(s) to use in the associated table (can be symbol or array).
# File lib/sequel/model/associations.rb, line 380 def right_primary_key self[:right_primary_key] ||= associated_class.primary_key end
The primary key columns to use in the associated table (always array).
# File lib/sequel/model/associations.rb, line 385 def right_primary_keys self[:right_primary_keys] ||= Array(right_primary_key) end
The columns to select when loading the association, associated_class.table_name.* by default.
# File lib/sequel/model/associations.rb, line 390 def select return self[:select] if include?(:select) self[:select] ||= Sequel::SQL::ColumnAll.new(associated_class.table_name) end
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