Class Sequel::Model::Associations::ManyToOneAssociationReflection
In: lib/sequel/model/associations.rb
Parent: AssociationReflection

Methods

Public Instance methods

associated_object_keys()

Alias for primary_keys

many_to_one associations can only have associated objects if none of the :keys options have a nil value.

[Source]

     # 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.

[Source]

     # 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.

[Source]

     # 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.

[Source]

     # 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

[Source]

     # 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

[Source]

     # 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).

[Source]

     # 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.

[Source]

     # 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.

[Source]

     # 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).

[Source]

     # 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

[Source]

     # 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.

[Source]

     # 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.

[Source]

     # File lib/sequel/model/associations.rb, line 354
354:         def returns_array?
355:           false
356:         end

True only if the reciprocal is a one_to_one association.

[Source]

     # File lib/sequel/model/associations.rb, line 359
359:         def set_reciprocal_to_self?
360:           reciprocal
361:           reciprocal_type == :one_to_one
362:         end

[Validate]