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

### Methods

associated_object_keys can_have_associated_objects? default_key eager_loader_key eager_loading_predicate_key primary_key qualified_key qualified_primary_key reciprocal_array? remove_before_destroy? remove_should_check_existing? set_reciprocal_to_self?

### Public Instance methods

associated_object_keys()

The keys in the associated model‘s table related to this association

[Source]

         # File lib/sequel/model/associations.rb, line 318
    318:         def associated_object_keys
    319:           self[:keys]
    320:         end

can_have_associated_objects?(obj)

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

[Source]

         # File lib/sequel/model/associations.rb, line 324
    324:         def can_have_associated_objects?(obj)
    325:           !self[:primary_keys].any?{|k| obj.send(k).nil?}
    326:         end

default_key()

Default foreign key name symbol for key in associated table that points to current table‘s primary key.

[Source]

         # File lib/sequel/model/associations.rb, line 330
    330:         def default_key
    331:
    332:           "#{underscore(demodulize(self[:model].name))}_id"
    333:         end

eager_loader_key()

The key to use for the key hash when eager loading

[Source]

         # File lib/sequel/model/associations.rb, line 335
    335:         def eager_loader_key
    336:           self[:eager_loader_key] ||= primary_key
    337:         end

eager_loading_predicate_key()

The hash key to use for the eager loading predicate (left side of IN (1, 2, 3))

[Source]

         # File lib/sequel/model/associations.rb, line 340
    340:         def eager_loading_predicate_key
    341:           self[:eager_loading_predicate_key] ||= qualify_assoc(self[:key])
    342:         end

primary_key()

The column in the current table that the key in the associated table references.

[Source]

         # File lib/sequel/model/associations.rb, line 346
    346:         def primary_key
    347:          self[:primary_key]
    348:         end

qualified_key()

Alias for eager_loading_predicate_key

qualified_primary_key()

primary_key qualified by the current table

[Source]

         # File lib/sequel/model/associations.rb, line 351
    351:         def qualified_primary_key
    352:           self[:qualified_primary_key] ||= qualify_cur(primary_key)
    353:         end

reciprocal_array?()

Whether the reciprocal of this association returns an array of objects instead of a single object, false for a one_to_many association.

[Source]

         # File lib/sequel/model/associations.rb, line 357
    357:         def reciprocal_array?
    358:           false
    359:         end

remove_before_destroy?()

Destroying one_to_many associated objects automatically deletes the foreign key.

[Source]

         # File lib/sequel/model/associations.rb, line 362
    362:         def remove_before_destroy?
    363:           false
    364:         end

remove_should_check_existing?()

The one_to_many association needs to check that an object to be removed already is associated.

[Source]

         # File lib/sequel/model/associations.rb, line 367
    367:         def remove_should_check_existing?
    368:           true
    369:         end

set_reciprocal_to_self?()

One to many associations set the reciprocal to self when loading associated records.

[Source]

         # File lib/sequel/model/associations.rb, line 372
    372:         def set_reciprocal_to_self?
    373:           true
    374:         end

[Validate]