FIX: detection of error changed, so you can clear errors

app/models/theme_field.rb

@@ -95,10 +95,12 @@ COMPILED
         self.error = nil unless error.nil?
       rescue SassC::SyntaxError => e
         self.error = e.message
+      end
+
       if error_changed?
         update_columns(error: self.error)
       end
-      end
+
     end
   end
 

spec/models/theme_field_spec.rb

@@ -21,8 +21,10 @@ HTML
     field = ThemeField.create!(theme_id: 1, target: 0, name: "scss", value: css)
     field.reload
     expect(field.error).not_to eq(nil)
-    field.value = ""
+    field.value = "body {color: blue};"
     field.save!
+    field.reload
+
     expect(field.error).to eq(nil)
   end
 end