I have created a custom Rule in /sitecore/system/Settings/Validation Rules/Item Rules
When I press the validate button, I can see the Rule and its result, so far so good. But the Validation Button is optional, editors might just not use it.
What I want is to run my rule when I save the Page in Experience Editor and prevent saving the item like this:
I know this works fine when I add a regex validation on any items field template, but not sure how to deal with a validation item.
If the Validation Item is not correct, then simply asked how can I perform any action in code while saving and show this red layer if it fails?
