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in_unique Validation Rule Help

I am building a section for people to update their email addresses along with their name. I have a validation rule that checks that the email address entered is unique but I also need to ensure that the error doesn't happen if the email hasn't changed. I have came up with this rule based on the docs but it just throws the error.

PHP Code:
'email'=> 'required|valid_email|is_unique[users.email, users.email, '.$existingUserDetails['email'].']'

I tried using {email} instead of hard coding the value but throws an error: The placeholder field cannot use placeholder: email

Just trying to avoid having to roll my own rule for this as is_unique ticks all the boxes.

Messages In This Thread
in_unique Validation Rule Help - by purpleprawn - 11-29-2023, 09:12 AM

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