Class: ActiveRecord::Associations::SingularAssociation

Inherits:
Association
  • Object
show all
Defined in:
lib/active_record/associations/singular_association.rb

Overview

:nodoc:

Direct Known Subclasses

BelongsToAssociation, HasOneAssociation

Instance Attribute Summary

Attributes inherited from Association

#inversed, #owner, #reflection, #target

Instance Method Summary collapse

Methods inherited from Association

#association_scope, #create, #create!, #extensions, #initialize, #initialize_attributes, #klass, #load_target, #loaded!, #loaded?, #marshal_dump, #marshal_load, #reload, #remove_inverse_instance, #reset, #reset_scope, #scope, #set_inverse_instance, #stale_target?, #target_scope

Constructor Details

This class inherits a constructor from ActiveRecord::Associations::Association

Instance Method Details

#build(attributes = {}) {|record| ... } ⇒ Object

Yields:

  • (record)

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# File 'lib/active_record/associations/singular_association.rb', line 20

def build(attributes = {})
  record = build_record(attributes)
  yield(record) if block_given?
  set_new_record(record)
  record
end

#force_reload_readerObject

Implements the reload reader method, e.g. foo.reload_bar for Foo.has_one :bar


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# File 'lib/active_record/associations/singular_association.rb', line 29

def force_reload_reader
  klass.uncached { reload }
  target
end

#readerObject

Implements the reader method, e.g. foo.bar for Foo.has_one :bar


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# File 'lib/active_record/associations/singular_association.rb', line 7

def reader
  if !loaded? || stale_target?
    reload
  end

  target
end

#writer(record) ⇒ Object

Implements the writer method, e.g. foo.bar= for Foo.belongs_to :bar


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# File 'lib/active_record/associations/singular_association.rb', line 16

def writer(record)
  replace(record)
end