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Rich Torres

Creating New users: addRole doesn't work (sometimes)

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I am a bit confused. I have a simple form to add new users, and I damn near have everything working. As a matter of fact it WAS working just fine a few times while testing. I really changed very little. The role "representative" exists yet I still get an error:


Error: Exception: Method NullPage::addRole does not exist or is not callable in this context


<form method="post" action="./">
  <label for="firstName">First Name</label>
  <input name="firstName" type="text" required>
  <label for="lastName">Last Name</label>
  <input name="lastName" type="text" required>
  <label for="email">Email</label>
  <input name="email" type="email" required>
  <button name="submit" type="submit">Get Started</button>


if (isset($_POST['submit'])) {
        // Puts users in an array, and finds a userID that is not being used
        $agentList = array();
        $number = 1001;

        foreach($users->find('start=0, roles=representative') as $v) {
                array_push($agentList, $v->userID);

        for ($number; ;) {
                if(in_array($number, $agentList)) {
                } else {
                        $newAgentID = $number;
        // Place POST data into variables
        $firstName = $_POST['firstName'];
        $lastName = $_POST['lastName'];
        $fullName = array($firstName,$lastName);
        $email = $_POST['email'];
        //Have Processwire add the new user     
        $u = $users->add($firstName[0].$lastName);
        $u->firstName = $firstName;
        $u->lastName = $lastName;
        $u->pass = "Password";
        $u->email = $email;
        $u->userID = $newAgentID;

        //Add user to ViciDial
        $viciAdminUser = 10;
        $viciAdminPass = "password";
        $viciUser = $newAgentID;
        $viciUserName = implode(" ",$fullName);
        $viciUserPass = "Password".$newAgentID;  
        $viciUserLevel = 1;
        $viciUserGroup = "Arizona";


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The message complains about $u being empty (i.e. a NullPage object), so the call to $users->add didn't succeed. A likely cause is that a user with the name you are trying to add already exists. You should check the return of $users->add, or even better, check if the name in question is already there beforehand and output a message accordingly (and don't forget to sanitize the form input).

There's also a nice API to access GET and POST parameters in ProcessWire. Instead of using e.g. $_POST["submit"], you can access $input->post->submit and don't trigger warnings/errors when that parameter isn't defined.

  • Like 6

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Just a guess: Maybe you need to save the new user first, and then add the role.

Also, this looks strange: 

for ($number; ;) {


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@BitPoet You were dead on! User existed. That was impressive. No wonder is worked some times, but not others. Also, thank you for the API insight.

@dragan The purpose of the for is to loop through existing user ID #s to find one that does not exist. I am not sure if my method was the best, but it works.

  • Like 1

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On 8/22/2018 at 4:54 AM, Noel Boss said:

@Rich Torres You can create a new user like this:

$u = new Page($templates->get('user'));


This is much easier 🙂

$u = $users->add('user-name');


  • Like 4

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I have to reopen this thread, because I still have these problems.

I am absolutely sure that my user-name is valid and unique.
Still, if using $users->add($name) I'm getting a NullPage back, but just sometimes.
I couldn't find a way to reproduce this error on our test-server.

Our database is huge, we have some traffic and probably sometimes users are created nearly simultaneously (but definitely with unique names)
Currently we have more than 150k user-accounts in the system.
Do you think that could be a problem?

The solution of @Noel Boss is interesting. How will the user-name be generated in this case?

Any help is really appreciated! Thank you!

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