Class: DatastaxRails::Associations::HasOneAssociation
- Inherits:
-
SingularAssociation
- Object
- Association
- SingularAssociation
- DatastaxRails::Associations::HasOneAssociation
- Defined in:
- lib/datastax_rails/associations/has_one_association.rb
Overview
A has_one association is the parent of a one-to-one parent/child relation
Instance Attribute Summary
Attributes inherited from Association
#loaded, #owner, #reflection, #target
Instance Method Summary collapse
Methods inherited from SingularAssociation
#build, #create, #create!, #reader, #writer
Methods inherited from Association
#aliased_column_family, #association_scope, #initialize, #klass, #load_target, #loaded!, #reload, #reset, #reset_scope, #scoped, #set_inverse_instance, #stale_target?, #target_scope
Constructor Details
This class inherits a constructor from DatastaxRails::Associations::Association
Instance Method Details
#delete(method = options[:dependent]) ⇒ Object
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# File 'lib/datastax_rails/associations/has_one_association.rb', line 27 def delete(method = [:dependent]) return unless load_target case method when :delete target.delete when :destroy target.destroy when :nullify target.update_attribute(reflection.foreign_key, nil) end end |
#replace(record, save = true) ⇒ Object
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# File 'lib/datastax_rails/associations/has_one_association.rb', line 5 def replace(record, save = true) raise_on_type_mismatch(record) if record load_target if target && target != record remove_target!([:dependent]) unless target.destroyed? end if record set_owner_attributes(record) set_inverse_instance(record) if owner.persisted? && save && !record.save nullify_owner_attributes(record) set_owner_attributes(target) if target fail RecordNotSaved, "Failed to save the new associated #{reflection.name}." end end self.target = record end |