Class: ActiveRecord::Associations::HasOneAssociation
- Inherits:
-
BelongsToAssociation
- Object
- AssociationProxy
- BelongsToAssociation
- ActiveRecord::Associations::HasOneAssociation
- Defined in:
- lib/active_record/associations/has_one_association.rb
Overview
:nodoc:
Instance Method Summary collapse
- #build(attributes = {}, replace_existing = true) ⇒ Object
- #create(attributes = {}, replace_existing = true) ⇒ Object
-
#initialize(owner, association_name, association_class_name, association_class_primary_key_name, options) ⇒ HasOneAssociation
constructor
A new instance of HasOneAssociation.
- #replace(obj, dont_save = false) ⇒ Object
Methods inherited from BelongsToAssociation
Methods inherited from AssociationProxy
#loaded, #loaded?, #method_missing, #proxy_respond_to?, #reload, #respond_to?, #target, #target=
Constructor Details
#initialize(owner, association_name, association_class_name, association_class_primary_key_name, options) ⇒ HasOneAssociation
Returns a new instance of HasOneAssociation.
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# File 'lib/active_record/associations/has_one_association.rb', line 4 def initialize(owner, association_name, association_class_name, association_class_primary_key_name, ) super construct_sql end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class ActiveRecord::Associations::AssociationProxy
Instance Method Details
#build(attributes = {}, replace_existing = true) ⇒ Object
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# File 'lib/active_record/associations/has_one_association.rb', line 16 def build(attributes = {}, replace_existing = true) record = @association_class.new(attributes) if replace_existing replace(record, true) else record[@association_class_primary_key_name] = @owner.id unless @owner.new_record? self.target = record end record end |
#create(attributes = {}, replace_existing = true) ⇒ Object
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# File 'lib/active_record/associations/has_one_association.rb', line 10 def create(attributes = {}, replace_existing = true) record = build(attributes, replace_existing) record.save record end |
#replace(obj, dont_save = false) ⇒ Object
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# File 'lib/active_record/associations/has_one_association.rb', line 29 def replace(obj, dont_save = false) load_target unless @target.nil? if dependent? && !dont_save @target.destroy unless @target.new_record? @owner.clear_association_cache else @target[@association_class_primary_key_name] = nil @target.save unless @owner.new_record? end end if obj.nil? @target = nil else raise_on_type_mismatch(obj) obj[@association_class_primary_key_name] = @owner.id unless @owner.new_record? @target = obj end @loaded = true unless @owner.new_record? or obj.nil? or dont_save return (obj.save ? self : false) else return (obj.nil? ? nil : self) end end |