Prevent duplicate value in field

kstewart
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1 month 2 weeks ago #344250 by kstewart

Prevent duplicate value in field was created by kstewart

I have a field that is unique to registrants and when they forget their sign-on, they will create a new profile and use the same value in the field. If I had a way of stipulating no duplicates values they wouldn't be able to create another profile. I have CB Query Validation but not sure how to write the validation. The field is called cb_ama and it is a alphanumeric field. Thank you in advance for any help

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krileon
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1 month 1 week ago #344258 by krileon

Replied by krileon on topic Prevent duplicate value in field

To validate a field having a non-duplicate value edit your field then navigate to Integrations > CB Query Field > Query Validation and configure the following.

Query Validation: Enabled
Query:

Code:

SELECT `id` FROM `#__comprofiler` WHERE `id` != '[user_id]' `FIELD_NAME_HERE` != '[value]'

Validate On: Empty Results
Error Message: You are already registered.
Ajax Validation: Enabled

Replace FIELD_NAME_HERE with the name of your field. In your case replace it with cb_ama.

Kyle (Krileon)
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