diff options
Diffstat (limited to 'activerecord/lib/active_record/type/numeric.rb')
-rw-r--r-- | activerecord/lib/active_record/type/numeric.rb | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/numeric.rb b/activerecord/lib/active_record/type/numeric.rb index 464d631d80..9cc6411e77 100644 --- a/activerecord/lib/active_record/type/numeric.rb +++ b/activerecord/lib/active_record/type/numeric.rb @@ -13,6 +13,29 @@ module ActiveRecord else super end end + + def changed?(old_value, new_value) # :nodoc: + # 0 => 'wibble' should mark as changed so numericality validations run + if nil_or_zero?(old_value) && non_numeric_string?(new_value) + # nil => '' should not mark as changed + old_value != new_value.presence + else + super + end + end + + private + + def non_numeric_string?(value) + # 'wibble'.to_i will give zero, we want to make sure + # that we aren't marking int zero to string zero as + # changed. + value !~ /\A\d+\.?\d*\z/ + end + + def nil_or_zero?(value) + value.nil? || value == 0 + end end end end |