Cache nil results for has_one associations so multiple calls don't call the database. Closes #5757. [Michael A. Schoen]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4721 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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@ -1,5 +1,7 @@
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*SVN*
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* Cache nil results for has_one associations so multiple calls don't call the database. Closes #5757. [Michael A. Schoen]
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* Add documentation for how to disable timestamps on a per model basis. Closes #5684. [matt@mattmargolis.net Marcel Molina Jr.]
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* Don't save has_one associations unnecessarily. #5735 [Jonathan Viney]
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@ -656,7 +656,7 @@ module ActiveRecord
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module_eval do
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before_save <<-EOF
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association = instance_variable_get("@#{reflection.name}")
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if !association.nil?
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if association && association.target
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if association.new_record?
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association.save(true)
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end
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@ -841,14 +841,14 @@ module ActiveRecord
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if association.nil? || force_reload
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association = association_proxy_class.new(self, reflection)
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retval = association.reload
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unless retval.nil?
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instance_variable_set("@#{reflection.name}", association)
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else
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if retval.nil? and association_proxy_class == BelongsToAssociation
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instance_variable_set("@#{reflection.name}", nil)
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return nil
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end
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instance_variable_set("@#{reflection.name}", association)
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end
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association
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association.target.nil? ? nil : association
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end
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define_method("#{reflection.name}=") do |new_value|
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@ -126,13 +126,13 @@ module ActiveRecord
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def load_target
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if !@owner.new_record? || foreign_key_present
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begin
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@target = find_target if !loaded?
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@target = find_target unless loaded?
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rescue ActiveRecord::RecordNotFound
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reset
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end
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end
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loaded if target
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loaded
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target
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end
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@ -96,6 +96,11 @@ class HasOneAssociationsTest < Test::Unit::TestCase
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assert_equal Account.find(1).credit_limit, companies(:first_firm).account.credit_limit
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end
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def test_has_one_cache_nils
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assert_nil companies(:another_firm).account
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assert_queries(0) { companies(:another_firm).account }
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end
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def test_proxy_assignment
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company = companies(:first_firm)
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assert_nothing_raised { company.account = company.account }
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