New form based on existing registration

Hi! I’m asking your help about this case:

I have a registration form where people can register to dance class – the last few days you helped me a lot with this what thank you again.
I now that you have a github where lot of mu-plugins exist but I didn’t why what can do this:
When somebody registering to my dance classes, they have an option (with conditional rules) that “deleting the registration.
I’m looking for something what is making an ‘inspection’ when somebody tries to submit a form with check “delete registration” and if the e-mail address or the phone number is exist on an existing form, they get a message about “Sorry, but you didn’t have existing registration”?

When somebody registering, I’m using “email-1′ and ‘phone-1’ as fields Where somebody tries to delete and they are checking “deleting existing registration” checkbox, I’m using “email-2” and “phone-2”. I like to be that checking that “email-2” or “phone-2” has an existing registration.

So technically I need when somebody fills email-2 or phone-2, field that checks that e-mail-1 or phone-1 data is already exist in the submissions or not and if yes, this message has to come for the user.
I know that this is 2 mu-plugins, one for the e-mail check, one for the phone number because maybe somebody using another e-mail when ask the deletion or mistype the phone number, so this two field not need to consist the two fields.

Thank you!
Peter

• This topic was modified 1 year, 8 months ago by hollosipeter.
• This topic was modified 1 year, 8 months ago by hollosipeter.

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