Get city population after user's city is entered? [RESOLVED]

[chrishajer (Chris (Gravity Forms))]

OK. I think in that case I recommend using gform_field_validation. You can read that file (either CSV or JSON) using PHP and this filter:

gform_field_validation

Then you can return a validation error (message if they are on the No list) or let them pass to the next page if they are on the Yes list. There is a possibility they are not on either list, and I am not sure what you want to return to them in that case.

We covered doing something like that here:

Validate ZIP Code against a list of codes

Update: Super close to accomplishing, but I am facing an issue. When users enter the correct zip it works as it should, but if they enter the wrong zip code, it just gives me a never ending orange circle (I guess trying to validate it). Thing is, it works on the gravity forms “preview” sections, but not on the live site. This is the code: add_filter( 'gform_field_validation_2_48', 'custom_validation', 10, 4 ); function custom_validation( $result, $value, $form, $field ) { $url = 'https://dom…

and

Zip Code Field Validation

Then you’d add a seperate add_filter for that form + field ID (and I’d select it at field type address inside the function instead of the field ID to keep it compact & more scalable).

Take a look at those topics and let us know if you need a nudge in the right direction.