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

### Methods

associated_object_keys can_have_associated_objects? dataset_need_primary_key? default_key eager_graph_lazy_dataset? eager_loader_key primary_key primary_keys reciprocal_array? returns_array? set_reciprocal_to_self?

### Public Instance methods

associated_object_keys()

Alias for primary_keys

can_have_associated_objects?(obj)

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 175
    175:         def can_have_associated_objects?(obj)
    176:           !self[:keys].any?{|k| obj.send(k).nil?}
    177:         end

dataset_need_primary_key?()

Whether the dataset needs a primary key to function, false for many_to_one associations.

[Source]

         # File lib/sequel/model/associations.rb, line 180
    180:         def dataset_need_primary_key?
    181:           false
    182:         end

default_key()

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 186
    186:         def default_key
    187:
    188:           "#{self[:name]}_id"
    189:         end

eager_graph_lazy_dataset?()

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 192
    192:         def eager_graph_lazy_dataset?
    193:           self[:key].nil?
    194:         end

eager_loader_key()

The key to use for the key hash when eager loading

[Source]

         # File lib/sequel/model/associations.rb, line 197
    197:         def eager_loader_key
    198:           self[:eager_loader_key] ||= self[:key]
    199:         end

primary_key()

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 202
    202:         def primary_key
    203:          self[:primary_key] ||= associated_class.primary_key
    204:         end

primary_keys()

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 207
    207:         def primary_keys
    208:          self[:primary_keys] ||= Array(primary_key)
    209:         end

reciprocal_array?()

True only if the reciprocal is a one_to_many association.

[Source]

         # File lib/sequel/model/associations.rb, line 213
    213:         def reciprocal_array?
    214:           !set_reciprocal_to_self?
    215:         end

returns_array?()

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 219
    219:         def returns_array?
    220:           false
    221:         end

set_reciprocal_to_self?()

True only if the reciprocal is a one_to_one association.

[Source]

         # File lib/sequel/model/associations.rb, line 224
    224:         def set_reciprocal_to_self?
    225:           reciprocal
    226:           self[:reciprocal_type] == :one_to_one
    227:         end

[Validate]