Class | Sequel::Model::Associations::ManyToOneAssociationReflection |
In: |
lib/sequel/model/associations.rb
|
Parent: | AssociationReflection |
many_to_one associations can only have associated objects if none of the :keys options have a nil value.
# File lib/sequel/model/associations.rb, line 169 169: def can_have_associated_objects?(obj) 170: !self[:keys].any?{|k| obj.send(k).nil?} 171: end
Whether the dataset needs a primary key to function, false for many_to_one associations.
# File lib/sequel/model/associations.rb, line 174 174: def dataset_need_primary_key? 175: false 176: end
Default foreign key name symbol for foreign key in current model‘s table that points to the given association‘s table‘s primary key.
# File lib/sequel/model/associations.rb, line 180 180: def default_key 181: 182: "#{self[:name]}_id" 183: end
Whether to eagerly graph a lazy dataset, true for many_to_one associations only if the key is nil.
# File lib/sequel/model/associations.rb, line 186 186: def eager_graph_lazy_dataset? 187: self[:key].nil? 188: end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 191 191: def eager_loader_key 192: self[:eager_loader_key] ||= self[:key] 193: end
The column(s) in the associated table that the key in the current table references (either a symbol or an array).
# File lib/sequel/model/associations.rb, line 196 196: def primary_key 197: self[:primary_key] ||= associated_class.primary_key 198: end
The columns in the associated table that the key in the current table references (always an array).
# File lib/sequel/model/associations.rb, line 201 201: def primary_keys 202: self[:primary_keys] ||= Array(primary_key) 203: end
True only if the reciprocal is a one_to_many association.
# File lib/sequel/model/associations.rb, line 207 207: def reciprocal_array? 208: !set_reciprocal_to_self? 209: end
Whether this association returns an array of objects instead of a single object, false for a many_to_one association.
# File lib/sequel/model/associations.rb, line 213 213: def returns_array? 214: false 215: end