Regex verification

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1

Hello

I have been asked to add string baed verification to a form, which is pretty new to me so i am just looking for some advice.

The validation would be +20.00 to -20.00, the + or - would be optional.
I have the “regex” part for this.
I also have other fields to create using similar validations that use the +/- and some that dont, so i am guessing I can just use the same for them as well?

Is a “single line text” field the correct field to use?
Do i need to use this plugin??.. Search Results for “regex-textfield-gravityforms-ad” | WordPress.org

Or do you need to use the code from number 6. and then adapt or is there any other code out there to use?

2

If you have the regex, you can use the gform_field_validation filter. Example 6 is a good example showing a regex use with the filter. What have you tried so far?

3

I installed the plugin which gives me a regex field within gravity forms, it then just allows you to paste the regex in to the field options.

I guess i needed to use a single line of text field, then add your validation code.
If i take that number 6 as an example:

add_filter( 'gform_field_validation', 'validate_phone', 10, 4 );
function validate_phone( $result, $value, $form, $field ) {
    $pattern = "/^(\+44\s?7\d{3}|\(?07\d{3}\)|\(?01\d{3}\)?)\s?\d{3}\s?\d{3}$/";
    if ( $field->type == 'phone' && $field->phoneFormat != 'standard' && ! preg_match( $pattern, $value ) && $value != '' ) {
        $result['is_valid'] = false;
        $result['message']  = 'Please enter a valid phone number';
    }
  
    return $result;
}

I dont know what to change for:
1st line: Does validate_phone change? and the 10, 4? or do you just put validate_text ?
2nd line: Function, does this stay the same, apart from matching the “validate” part?
3rd line: I put my regex in there
4th line: Is this even needed? I guess it does but i dont know what needs to go in there.
5th line: Stays the same?
6th line: Message, i just put in what i want there.

4

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