class Sequel::Model::Associations::ManyToOneAssociationReflection

  1. lib/sequel/model/associations.rb
Parent: Associations

Public Instance Aliases

associated_object_keys -> primary_keys

Public Instance methods

can_have_associated_objects? (obj)

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

[show source] 
# File lib/sequel/model/associations.rb, line 364
def can_have_associated_objects?(obj)
  !self[:keys].any?{|k| obj.send(k).nil?}
end
dataset_need_primary_key? ()

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

[show source] 
# File lib/sequel/model/associations.rb, line 369
def dataset_need_primary_key?
  false
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.

[show source] 
# File lib/sequel/model/associations.rb, line 375
def default_key
  :"#{self[:name]}_id"
end
eager_graph_lazy_dataset? ()

Whether to eagerly graph a lazy dataset, true for many_to_one associations only if the key is nil.

[show source] 
# File lib/sequel/model/associations.rb, line 381
def eager_graph_lazy_dataset?
  self[:key].nil?
end
eager_limit_strategy ()

many_to_one associations don’t need an eager limit strategy

[show source] 
# File lib/sequel/model/associations.rb, line 386
def eager_limit_strategy
  nil
end
predicate_key ()

The expression to use on the left hand side of the IN lookup when eager loading

[show source] 
# File lib/sequel/model/associations.rb, line 391
def predicate_key
  cached_fetch(:predicate_key){qualified_primary_key}
end
primary_key ()

The column(s) in the associated table that the key in the current table references (either a symbol or an array).

[show source] 
# File lib/sequel/model/associations.rb, line 396
def primary_key
 cached_fetch(:primary_key){associated_class.primary_key}
end
primary_key_method ()

The method symbol or array of method symbols to call on the associated object to get the value to use for the foreign keys.

[show source] 
# File lib/sequel/model/associations.rb, line 408
def primary_key_method
 cached_fetch(:primary_key_method){primary_key}
end
primary_key_methods ()

The array of method symbols to call on the associated object to get the value to use for the foreign keys.

[show source] 
# File lib/sequel/model/associations.rb, line 414
def primary_key_methods
 cached_fetch(:primary_key_methods){Array(primary_key_method)}
end
primary_keys ()

The columns in the associated table that the key in the current table references (always an array).

[show source] 
# File lib/sequel/model/associations.rb, line 401
def primary_keys
 cached_fetch(:primary_keys){Array(primary_key)}
end
qualified_primary_key ()

#primary_key qualified by the associated table

[show source] 
# File lib/sequel/model/associations.rb, line 419
def qualified_primary_key
  cached_fetch(:qualified_primary_key){self[:qualify] == false ? primary_key : qualify_assoc(primary_key)}
end
reciprocal_array? ()

True only if the reciprocal is a one_to_many association.

[show source] 
# File lib/sequel/model/associations.rb, line 424
def reciprocal_array?
  !set_reciprocal_to_self?
end
returns_array? ()

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

[show source] 
# File lib/sequel/model/associations.rb, line 430
def returns_array?
  false
end
set_reciprocal_to_self? ()

True only if the reciprocal is a one_to_one association.

[show source] 
# File lib/sequel/model/associations.rb, line 435
def set_reciprocal_to_self?
  reciprocal
  reciprocal_type == :one_to_one
end