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 288 288: def can_have_associated_objects?(obj) 289: !self[:keys].any?{|k| obj.send(k).nil?} 290: end
Whether the dataset needs a primary key to function, false for many_to_one associations.
# File lib/sequel/model/associations.rb, line 293 293: def dataset_need_primary_key? 294: false 295: 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 299 299: def default_key 300: 301: "#{self[:name]}_id" 302: 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 305 305: def eager_graph_lazy_dataset? 306: self[:key].nil? 307: end
many_to_one associations don‘t need an eager limit strategy
# File lib/sequel/model/associations.rb, line 310 310: def eager_limit_strategy 311: nil 312: end
The expression to use on the left hand side of the IN lookup when eager loading
# File lib/sequel/model/associations.rb, line 315 315: def predicate_key 316: cached_fetch(:predicate_key){qualified_primary_key} 317: 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 320 320: def primary_key 321: cached_fetch(:primary_key){associated_class.primary_key} 322: end
The method symbol or array of method symbols to call on the associated object to get the value to use for the foreign keys.
# File lib/sequel/model/associations.rb, line 332 332: def primary_key_method 333: cached_fetch(:primary_key_method){primary_key} 334: end
The array of method symbols to call on the associated object to get the value to use for the foreign keys.
# File lib/sequel/model/associations.rb, line 338 338: def primary_key_methods 339: cached_fetch(:primary_key_methods){Array(primary_key_method)} 340: 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 325 325: def primary_keys 326: cached_fetch(:primary_keys){Array(primary_key)} 327: end
primary_key qualified by the associated table
# File lib/sequel/model/associations.rb, line 343 343: def qualified_primary_key 344: cached_fetch(:qualified_primary_key){self[:qualify] == false ? primary_key : qualify_assoc(primary_key)} 345: end
True only if the reciprocal is a one_to_many association.
# File lib/sequel/model/associations.rb, line 348 348: def reciprocal_array? 349: !set_reciprocal_to_self? 350: 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 354 354: def returns_array? 355: false 356: end