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 returns_array?

### 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 168
    168:         def can_have_associated_objects?(obj)
    169:           !self[:keys].any?{|k| obj.send(k).nil?}
    170:         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 173
    173:         def dataset_need_primary_key?
    174:           false
    175:         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 179
    179:         def default_key
    180:
    181:           "#{self[:name]}_id"
    182:         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 185
    185:         def eager_graph_lazy_dataset?
    186:           self[:key].nil?
    187:         end

eager_loader_key()

The key to use for the key hash when eager loading

[Source]

         # File lib/sequel/model/associations.rb, line 190
    190:         def eager_loader_key
    191:           self[:key]
    192:         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 195
    195:         def primary_key
    196:          self[:primary_key] ||= associated_class.primary_key
    197:         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 200
    200:         def primary_keys
    201:          self[:primary_keys] ||= Array(primary_key)
    202:         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 207
    207:         def returns_array?
    208:           false
    209:         end

[Validate]