diff options
Diffstat (limited to 'activerecord/lib/active_record/dirty.rb')
| -rw-r--r-- | activerecord/lib/active_record/dirty.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/dirty.rb b/activerecord/lib/active_record/dirty.rb index b32e17e990..a7d767486c 100644 --- a/activerecord/lib/active_record/dirty.rb +++ b/activerecord/lib/active_record/dirty.rb @@ -142,9 +142,11 @@ module ActiveRecord def field_changed?(attr, old, value) if column = column_for_attribute(attr) - if column.type == :integer && column.null && old.nil? + if column.type == :integer && column.null && (old.nil? || old == 0) # For nullable integer columns, NULL gets stored in database for blank (i.e. '') values. # Hence we don't record it as a change if the value changes from nil to ''. + # If an old value of 0 is set to '' we want this to get changed to nil as otherwise it'll + # be typecast back to 0 (''.to_i => 0) value = nil if value.blank? else value = column.type_cast(value) |