| 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 168
168: def can_have_associated_objects?(obj)
169: !self[:keys].any?{|k| obj.send(k).nil?}
170: end
Whether the dataset needs a primary key to function, false for many_to_one associations.
# File lib/sequel/model/associations.rb, line 173
173: def dataset_need_primary_key?
174: false
175: 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 179
179: def default_key
180:
181: "#{self[:name]}_id"
182: 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 185
185: def eager_graph_lazy_dataset?
186: self[:key].nil?
187: end
The key to use for the key hash when eager loading
# File lib/sequel/model/associations.rb, line 190
190: def eager_loader_key
191: self[:key]
192: 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 195
195: def primary_key
196: self[:primary_key] ||= associated_class.primary_key
197: 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 200
200: def primary_keys
201: self[:primary_keys] ||= Array(primary_key)
202: end