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 265 265: def can_have_associated_objects?(obj) 266: !self[:keys].any?{|k| obj.send(k).nil?} 267: end
Whether the dataset needs a primary key to function, false for many_to_one associations.
# File lib/sequel/model/associations.rb, line 270 270: def dataset_need_primary_key? 271: false 272: 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 276 276: def default_key 277: 278: "#{self[:name]}_id" 279: 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 282 282: def eager_graph_lazy_dataset? 283: self[:key].nil? 284: end
many_to_one associations don‘t need an eager limit strategy
# File lib/sequel/model/associations.rb, line 287 287: def eager_limit_strategy 288: nil 289: end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 292 292: def eager_loader_key 293: cached_fetch(:eager_loader_key){self[:key]} 294: 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 297 297: def primary_key 298: cached_fetch(:primary_key){associated_class.primary_key} 299: 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 309 309: def primary_key_method 310: cached_fetch(:primary_key_method){primary_key} 311: 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 315 315: def primary_key_methods 316: cached_fetch(:primary_key_methods){Array(primary_key_method)} 317: 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 302 302: def primary_keys 303: cached_fetch(:primary_keys){Array(primary_key)} 304: end
primary_key qualified by the associated table
# File lib/sequel/model/associations.rb, line 320 320: def qualified_primary_key 321: cached_fetch(:qualified_primary_key){self[:qualify] == false ? primary_key : qualify_assoc(primary_key)} 322: end
True only if the reciprocal is a one_to_many association.
# File lib/sequel/model/associations.rb, line 325 325: def reciprocal_array? 326: !set_reciprocal_to_self? 327: 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 331 331: def returns_array? 332: false 333: end