Support » Plugin: Contact Form 7 » Debugging my wpcf7_validate_checkbox function

  • Resolved nolaflash


    Am attempting to add conditional requirement of agree-to-terms based on a ‘Yes’ value from field New.

    Issue is that when agree-to-terms is required it appears in $result with default text regardless of field new’s value like so

    [agree-to-conditions] => Array
           [reason] => Please fill the required field.
           [idref] =>

    When agree-to-terms is not required it is never in $result and the custom error message never appears and form is read as valid regardless of checkbox state.

    Form fields are currently:

    [select new "No" "Yes"]
    [checkbox* agree-to-conditions "I agree to the Terms and Conditions"]

    functions.php code is executing (tested with mail() calls). The values of new and agree-to-terms are seen in callback as expected.

    /* CUSTOM VALIDATION FOR CF7 FORM Place a CARE Account  */
    add_filter( 'wpcf7_validate_checkbox', 'care_account_valid', 10, 2 );
    add_filter( 'wpcf7_validate_checkbox*', 'care_account_valid', 10, 2 );
    function care_account_valid( $result, $tag ) {
    	$conditions = $_POST['agree-to-conditions'];
    	if ($tag['name'] == 'new' && $_POST['new'] == 'Yes') {
    		if ($conditions[0] != 'I agree to the Terms and Conditions') {
    			$result['valid'] = false;
    			$result['reason']['agree-to-conditions'] = "Please check the box to accept the Terms and Conditions";
    		mail('', 'test 1.1', $conditions[0] . $_POST['new'] . print_r($result,1));
    	} else if ($tag['name'] == 'new' && trim($_POST['new']) != 'Yes') {
    		$result['valid'] = true;
    	return $result;

    Any advice for getting the validation and error message for agree-to-terms dependent on value of new?

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Author Takayuki Miyoshi


    How about simply using checkbox instead of checkbox* if it’s not supposed to be a required field?

    Also, as a whole your coding looks outdated. I suggest giving this a read.

    Custom Validation

    Thank you for the reply!

    I meant to mention that I had tried checkbox without requiring it via * but found that when not required if I mailed a var_dump() of $result that agree-to-terms never showed up in the array at all when not required.

    Anyway I will definitely read the link you sent right now.

    The time you take helping us use your free and fantastic plugin is GREATLY appreciated!

    This works!! Thank you for the link, the plugin, and the nice new OOP code. My Friday is better already! Small present sent via PayPal.

    add_filter( 'wpcf7_validate_checkbox', 'care_account_valid', 20, 2 );
    function care_account_valid( $result, $tag ) {
        $tag = new WPCF7_Shortcode( $tag );
        if ( 'agree-to-conditions' == $tag->name ) {
            $new = isset( $_POST['new'] ) ? trim( $_POST['new'] ) : '';
            if ( $new == 'Yes' && !isset($_POST['agree-to-terms'])) {
                $result->invalidate( $tag, "Please check the box to accept the Terms and Conditions." );
        return $result;

    Seems like a link to from the Tips section on or from Additional Settings page would be a great idea!

Viewing 4 replies - 1 through 4 (of 4 total)
  • The topic ‘Debugging my wpcf7_validate_checkbox function’ is closed to new replies.