From ba06dab5451cdce9c2264abd6c9dd20cb2722c8d Mon Sep 17 00:00:00 2001 From: Sean Griffin Date: Thu, 24 Mar 2016 14:54:02 -0600 Subject: Memoize user provided defaults before type casting When a proc is given as a default value, the form builder ends up displaying `Proc#to_s` when the default is used. That's because we didn't handle the proc until type casting. This issue technically can occur any time that a proc is the value before type casting, but in reality the only place that will occur is when a proc default is provided through the attributes API, so the best place to handle this edge case is there. I've opted to memoize instead of just moving the `Proc#call` up, as this made me realize that it could potentially interact very poorly with dirty checking. The code here is a little redundant, but I don't want to rely on how `value_before_type_cast` is implemented in the super class, even if it's just an `attr_reader`. Fixes #24249 Close #24306 --- .../lib/active_record/attribute/user_provided_default.rb | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'activerecord/lib') diff --git a/activerecord/lib/active_record/attribute/user_provided_default.rb b/activerecord/lib/active_record/attribute/user_provided_default.rb index 6dbd92ce28..4580813364 100644 --- a/activerecord/lib/active_record/attribute/user_provided_default.rb +++ b/activerecord/lib/active_record/attribute/user_provided_default.rb @@ -4,20 +4,25 @@ module ActiveRecord class Attribute # :nodoc: class UserProvidedDefault < FromUser # :nodoc: def initialize(name, value, type, database_default) + @user_provided_value = value super(name, value, type, database_default) end - def type_cast(value) - if value.is_a?(Proc) - super(value.call) + def value_before_type_cast + if user_provided_value.is_a?(Proc) + @memoized_value_before_type_cast ||= user_provided_value.call else - super + @user_provided_value end end def with_type(type) - self.class.new(name, value_before_type_cast, type, original_attribute) + self.class.new(name, user_provided_value, type, original_attribute) end + + protected + + attr_reader :user_provided_value end end end -- cgit v1.2.3