PHP OOP AJAX, getting errors from Controller - php

Question

first of all, sorry for my english.
Well, I'm new to OOP PHP. I tried to develope a simple project and I would like to load data with Ajax to view changes without reloading pages.
I don't post models because they work fine and I can get all data I need.
But I have problems sending Controller errors and displaying them to the client.
I have a view called "viewUser.php" = main view.
In the main view is loaded "listUsers.php" in a div by an ajax call to display all the users, than each user has a button to send to another ajax call the id so this last ajax call can populate modal body with all the user informations in a form so they could be modified.
In this way all changes to user informations are displayed without reload the page but only with a ajax call in realtime.
I have this controller:
public function editUsers()
{
$data = [
'id' => '',
'name' => '',
'surname' => '',
'privilege' => '',
'position' => '',
'verified' => '',
'email' => ''
];
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$id = filter_var($_POST['id'], FILTER_SANITIZE_NUMBER_INT);
$name = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
$surname = filter_var($_POST['surname'], FILTER_SANITIZE_STRING);
$privilege = filter_var($_POST['privilege'], FILTER_SANITIZE_STRING);
$position = filter_var($_POST['position'], FILTER_SANITIZE_NUMBER_INT);
$verified = filter_var($_POST['verified'], FILTER_SANITIZE_NUMBER_INT);
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
$data = [
'id' => trim($id),
'name' => trim($name),
'surname' => trim($surname),
'privilege' => trim($privilege),
'position' => trim($position),
'verified' => trim($verified),
'email' => trim($email),
];
$nameValidation = "/^[a-zA-Z]*$/";
//Valida il nome
if (empty($name)) {
$error['nameError'] = 'Perfavore, inserisci il tuo nome!';
} elseif (!preg_match($nameValidation, $name)) {
$error['nameError'] = 'Il nome può contenere solo lettere!';
}
//Controlla che gli errori siano vuoti
if (empty($error['nameError'])) {
$this->userManagementModel->editUser($data);
}
}}
called by ajax
function ajaxEditUser() {
$(document).on("click", "#editUser", function (event) {
event.preventDefault();
var id = $.trim($('#floatingInputId').val());
var name = $.trim($('#floatingInputName').val());
var surname = $.trim($('#floatingInputSurname').val());
var email = $.trim($('#floatingInputEmail').val());
var password = $.trim($('#floatingInputPassword').val());
var confirmPassword = $.trim($('#floatingInputConfirmPassword').val());
var privilege = $.trim($('#floatingSelectPrivileges').val());
var position = $.trim($('#floatingSelectPositions').val());
var verified = $.trim($('#floatingSelectVerified').val());
$.ajax({
url: URLROOT + '/usersManagement/editUsers',
type: 'post',
data: {
id: id,
name: name,
surname: surname,
email: email,
password: password,
confirmPassword: confirmPassword,
privilege: privilege,
position: position,
verified: verified
},
success: function (response) {
// Riaggiorna gli utenti
$(".loadAjax").load(URLROOT + '/usersManagement/listUsers');
$('#closeExampleModal').trigger('click');
}
});
});}
Data is sent from a form in a modal populated by another Ajax request that populates a view loaded into those modal
I would like to view the error generated by controls (if they exist) in editUsers function, into modal
This is ajax call that populates modal:
function ajaxModalUser() {
$(document).on("click", ".btnEditUser", function () {
var userid = $(this).data('id');
// Richiesta AJAX
$.ajax({
url: URLROOT + '/usersManagement/modalUserInfo',
type: 'post',
data: {userid: userid},
success: function (response) {
// Aggiunge il response nel body del modal
$('.modal-body').html(response);
// Apre il modal
$('#exampleModal').modal('show');
}
});
});
}.
here the controller for ajax request for modal:
public function modalUserInfo()
{
$data = [
'users' => '',
'privileges' => '',
'positions' => '',
'noResults' => ''
];
if (isset($_POST['userid'])){
$users = $this->userManagementModel->userInfo($_POST['userid']);
$privileges = $this->userManagementModel->selectPrivileges();
$positions = $this->userManagementModel->selectPositions();
$data = [
'users' => $users,
'privileges' => $privileges,
'positions' => $positions,
'noResults' => 'Nessun risultato'
];
}
$this->view('usersManagement/modalUserInfo', $data);
}
and here the page of the view loaded into modal
<?php
require APPROOT . '/views/includes/head.php';
?>
<div class="container">
<?php if (!empty($data)) {
foreach ($data['users'] as $user) :?>
<form method="post">
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputId" name="id" value="<?php echo $user->id;?>" placeholder="id" hidden>
<label for="floatingInputId">Id</label>
</div>
<div class="form-floating mb-3">
<select class="form-select" id="floatingSelectVerified" name="verified" value="" aria-label="Floating label select example">
<option <?php if ($user->verified == 2){ echo 'selected';} ?> value="2">VERIFICATO</option>
<option <?php if ($user->verified == 1){ echo 'selected';} ?> value="1">NON VERIFICATO</option>
</select>
<label for="floatingSelectVerified">Verifica</label>
</div>
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputName" name="name" value="<?php echo $user->name;?>" placeholder="nome">
<label for="floatingInputName">Nome</label>
</div>
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputSurname" name="surname" value="<?php echo $user->surname;?>" placeholder="cognome">
<label for="floatingInputSurname">Cognome</label>
</div>
<div class="form-floating mb-3">
<input type="email" class="form-control" id="floatingInputEmail" name="email" value="<?php echo $user->email;?>" placeholder="email">
<label for="floatingInputEmail">Email</label>
</div>
<div class="form-floating mb-3">
<input type="password" class="form-control" id="floatingInputPassword" name="password" value="" placeholder="password">
<label for="floatingInputPassword">Password</label>
</div>
<div class="form-floating mb-3">
<input type="password" class="form-control" id="floatingInputConfirmPassword" name="confirmPassword" value="" placeholder="confirm password">
<label for="floatingInputConfirmPassword">Conferma Password</label>
</div>
<div class="form-floating mb-3">
<select class="form-select" id="floatingSelectPrivileges" name="privileges" value="" aria-label="Floating label select example">
<?php foreach ($data['privileges'] as $privilege) :?>
<option <?php if ($user->privilege_code == $privilege->privilege_code){ echo 'selected';} ?> value="<?php echo $privilege->privilege_code;?>"><?php echo $privilege->privilege;?></option>
<?php endforeach; ?>
</select>
<label for="floatingSelectPrivileges">Privilegi</label>
</div>
<div class="form-floating mb-3">
<select class="form-select" id="floatingSelectPositions" name="positions" value="" aria-label="Floating label select example">
<?php foreach ($data['positions'] as $position) :?>
<option <?php if ($user->position_id == $position->id){ echo 'selected';} ?> value="<?php echo $position->id;?>"><?php echo $position->user_position;?></option>
<?php endforeach; ?>
</select>
<label for="floatingSelectPositions">Carica</label>
</div>
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputCreationDate" name="creationDate" value="<?php if(!is_null($user->creation_date)){echo date("d/m/Y H:i:s", strtotime($user->creation_date));} else { echo "--";} ?>" placeholder="creato il" disabled>
<label for="floatingInputLastUpdate">Data registrazione :</label>
</div>
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputLastUpdate" name="lastUpdate" value="<?php if(!is_null($user->last_update)){echo date("d/m/Y H:i:s", strtotime($user->last_update));} else { echo "--";} ?>" placeholder="ultimo aggiornamento" disabled>
<label for="floatingInputLastUpdate">Ultima modifica :</label>
</div>
<div class="form-floating mb-3">
<input type="text" class="form-control" id="floatingInputLastLogin" name="lastLogin" value="<?php if(!is_null($user->last_login)){echo date("d/m/Y H:i:s", strtotime($user->last_login));} else { echo "--";} ?>" placeholder="ultimo login" disabled>
<label for="floatingInputLastLogin">Ultimo login :</label>
</div>
</form>
<?php endforeach;
}?>
</div>
I tried many solutions, but I can't understand how send the error to the view of the modal and reloading it into modal.
Thanks to everybody