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Cross-validation

3 years 5 months ago #321431 by autobahn
Cross-validation was created by autobahn
Is there a way to cross-validate input fields on a profile/registration form?

For example, if I have two input fields Field A and Field B can I check the following:

1. If Field A = "None" Then Field B MUST be = "None"
OR
2. If Field B <> "None" Then Field A MUST be = "None"

i.e. both fields must be = "None" or neither field can be = "None".

The fields in question are both dropdown lists.

Thank you

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3 years 5 months ago - 3 years 5 months ago #321444 by krileon
Replied by krileon on topic Cross-validation
Yes, using CB Code Field and its Code Validation. This lets you validate a field using your own custom PHP. Example as follows on how to do this.

Code Validation: Enable
Code (PHP):
if ( '[FIELD_A_NAME]' != 'None' ) {
	return true;
}

return ( '[value]' == 'None' );
Ajax Validation: Enable
Additional Fields: Field A

Be sure to replace FIELD_A_NAME with the actual name of Field A field. The above would be applied to Field B and covers case 1. It first checks if Field A is None and if it isn't the validation is skipped and if it is then it also checks if Field B is also set to None .For case 2 you'd need to right a similar validation rule for Field A.

Kyle (Krileon)
Community Builder Team Member
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3 years 5 months ago #321447 by autobahn
Replied by autobahn on topic Cross-validation
Thank you for such a quick reply.

This is excellent and I will give it a try.

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