Validate checkboxes with CF7

  • How? Validate checkboxes with CF7

    I have this code

    function cf7_length_validation_filter( $result, $tag ) {
	$name = $tag['name'];
	$value = isset( $_POST[$name] ) ? trim( $_POST[$name] ) : '';
	$minLen = 0;
	
	// Empty Fields
	if( empty( $value ) || strlen( $value ) == 0 ) {
		$result->invalidate( $tag, "Field cannot be empty." );
	}
	
	// Field Length
	switch ( $name ) {
		case 'fname':
		case 'lname':
			$minLen = 2;
			break;
		case 'email':
			$minLen = 6;
			break;
	}
	
	if ( empty( $value ) || strlen( $value ) < $minLen ) {
		$result->invalidate( $tag, "This field is too short." );
	}


	return $result;
}

    It works for those fields. For checkbox, it ALWAYS says Field cannot be empty

    add_filter( ‘wpcf7_validate_checkbox*’, ‘cf7_length_validation_filter’, 5, 2 );

    without this line, no validation happens at all

    • This topic was modified 1 year, 7 months ago by mayy3321.
Viewing 1 replies (of 1 total)

  • That’s because what’s in _POST is an array, not a scalar.

    Despite this forum’s formatting, I corrected the version below. You’ll need to change the ‘fname’ etc.

    For anyone chancing on this, I’m available to fix issues like this on a paid basis.

    function cf7_length_validation_filter( $result, $tag ) {
    $name = $tag[‘name’];
    $value = !empty( $_POST[$name] ) && is_array( $_POST[$name] ) ? trim( reset( $_POST[$name] ) ) : array();
    $minLen = 0;
    rawdebug(‘call’, $name, $_POST, $value);

    // Empty Fields
if( !$value ) {
    $result->invalidate( $tag, "Field cannot be empty." );
}

// Field Length
switch ( $name ) {
    case 'fname':
    case 'lname':
        $minLen = 2;
        break;
    case 'email':
        $minLen = 6;
        break;
}

if ( empty( $value ) || strlen( $value ) < $minLen ) {
    $result->invalidate( $tag, "This field is too short." );
}


return $result;

    }

Viewing 1 replies (of 1 total)
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