Php 在Codeigniter中找不到404页

我是CodeIgniter的新手，在为用户仪表板创建了新模型之后，除了管理员dashbaord之外，我还遇到了以下错误。如果有人能帮助我，那真是太好了。我检查了StackOverflow中以前的答案，但没有一个对我有帮助

我遇到以下错误

与错误相关的代码段如下所示

模型代码

<?php

//Details of queries whicha re used to interact with teh database

class Queries extends CI_Model {

//Created a function with the name getRoles  
    public function getRoles() {
        //Fetch the reocrds from the table
        $roles = $this->db->get('tbl_roles');
        if ($roles->num_rows() > 0) {
            return $roles->result();
        }
    }

    //Created a function with the name getColleges
    //Used to list collge names in addcodmin view page 
    public function getColleges() {
        //Fetch the reocrds from the table
        $colleges = $this->db->get('tbl_college');
        if ($colleges->num_rows() > 0) {
            return $colleges->result();
        }
    }

    public function registerAdmin($data) {
        return $this->db->insert('tbl_users', $data);
    }

    //create function to check whther three is a admin or not...if not only
    //      that add admin button will be appered
    public function checkAdminExist() {
        $checkAdmin = $this->db->where(['role_id' => '1'])->get('tbl_users');
        if ($checkAdmin->num_rows() > 0) {
            return $checkAdmin->num_rows();
        }
    }

//Create function to check the entered email and password existance 
    public function adminExist($email, $password) {
        $checkAdmin = $this->db->where(['email' => $email, 'password' => $password])->get('tbl_users');
        if ($checkAdmin->num_rows() > 0) {
            return $checkAdmin->row();
        }
    }

    //Created function makeCollege and return value and 
    public function makeCollege($data) {
        //if value is 0 - and 1 - if the data get inserted into the table 
        return $this->db->insert('tbl_college', $data);
    }

    //Created function register coadmin fot coadmin query called and passing data to the admin.php 
    //used insert method of the db class if inserted value 1 and if not value 0  
    public function registerCoadmin($data) {
        return $this->db->insert('tbl_users', $data);
    }

    //qruery to display all the colleges and details in teh dashboard
    public function viewAllColleges() {
        //get data from differendt table and view them in one single table
        $this->db->select(['tbl_users.user_id', 'tbl_users.email', 'tbl_college.college_id',
            'tbl_users.username', 'tbl_users.gender', 'tbl_college.collegename',
            'tbl_college.branch', 'tbl_roles.rolename']);
        $this->db->from('tbl_college');
        $this->db->join('tbl_users', 'tbl_users.college_id = tbl_college.college_id');
        $this->db->join('tbl_roles', 'tbl_roles.role_id = tbl_users.role_id');
        //get the details and return details 
        $users = $this->db->get();
        return $users->result();
    }

    public function insertStudent($data) {
        return $this->db->insert('tbl_student', $data);
    }

    public function getStudents($college_id) {
        //select fields required to diaply from the college and the student table
        $this->db->select(['tbl_student.id', 'tbl_college.collegename', 'tbl_student.studentname',
            'tbl_student.gender', 'tbl_student.email', 'tbl_student.course']);
        //Common fileds in the both the table
        $this->db->from('tbl_student');
        $this->db->join('tbl_college', 'tbl_college.college_id = tbl_student.college_id');
        //Take only stuednts who has college id (Get the details of all the students with the college id of 3)
        $this->db->where(['tbl_student.college_id' => $college_id]);
        $students = $this->db->get();
        return $students->result();
    }

    public function getStudentRecord($id) {
        $this->db->select(['tbl_college.college_id', 'tbl_college.collegename',
            'tbl_student.id', 'tbl_student.email', 'tbl_student.gender', 'tbl_student.studentname',
            'tbl_student.course']);
        $this->db->from('tbl_student');
        $this->db->join('tbl_college', 'tbl_college.college_id = tbl_student.college_id');
        $this->db->where(['tbl_student.id' => $id]);
        $student = $this->db->get();
        return $student->row();
    }

    public function upgradeStudent($data, $id) {
        return $this->db->where('id', $id)
                        ->update('tbl_student', $data);
    }

    public function removeStudent($id) {
        return $this->db->delete('tbl_student', ['id' => $id]);
    }

}

?>

控制器代码1

   <?php

defined('BASEPATH') OR exit('No direct script access allowed'); 

class Users extends MY_Controller {

    public function dashbaord() { 
        $this->load->model('queries');
        //$college_id=$this->session->userdata('college_id';
        $students = $this->queries->getStudents($college_id);
        $this->load->view('users',['students'=>$students]);

    }    
}

---

您试图访问的页面的url是什么？您是否有任何路由设置？我怀疑您尚未实现htaccess文件。尝试将
index.php
包含在url中
collegems/index.php/users/dashboard
@Presmelito已经添加了htacess，并且index.php已从url中隐藏。这是唯一不起作用的路由吗？您是如何到达那里的？您提交了任何表单吗？@Presmelito有2个用户角色，我以管理员和联合管理员的身份登录。当我以coadmin身份登录时，我进入此页面并出错。。
<?php

defined('BASEPATH') OR exit('No direct script access allowed');

class Welcome extends MY_Controller {

    public function index() {

        //New function to display add admin button 
        //and commented the existing code of $this->load->view('home');
        $this->load->model('queries');
        $checkAdminExist = $this->queries->checkAdminExist();
        $this->load->view('home', ['checkAdminExist' => $checkAdminExist]);
        //
    }

    public function adminRegister() {
        //loading teh queries model 
        $this->load->model('queries');
        //Calling the getRoles function inside the roles
        //$roles holds the data of 2 records availble in the roles table
        $roles = $this->queries->getRoles();
//        print_r($roles);
//        exit();
//        $this->load->view('register');
//Pass this to an register view in type of an array and pass the data to register view
        $this->load->view('register', ['roles' => $roles]);
    }

    public function adminSignup() {
        $this->form_validation->set_rules('username', 'Username', 'required');
        $this->form_validation->set_rules('email', 'Email', 'required');
        $this->form_validation->set_rules('gender', 'Gender', 'required');
        $this->form_validation->set_rules('role_id', 'Role', 'required');
        $this->form_validation->set_rules('password', 'Password', 'required');
        $this->form_validation->set_rules('confpwd', 'Password Again', 'required');

        $this->form_validation->set_error_delimiters('<div class="text-danger">', '</div>');

        if ($this->form_validation->run()) {
            $data = $this->input->post();
            $data['password'] = sha1($this->input->post('password'));
            $data['confpwd'] = sha1($this->input->post('confpwd'));
            $this->load->model('queries');
            if ($this->queries->registerAdmin($data)) {
                $this->session->set_flashdata('message', 'Admin Registered Sucessfully');
                return redirect("welcome/adminRegister");
            } else {

                $this->session->set_flashdata('message', 'Failed to Register Admin!');
                return redirect("welcome/adminRegister");
            }
//            echo '<pre>';
//            print_r($data);
//            echo '<pre>';
//            exit();
        } else {
            echo $this->adminRegister();
        }
    }

    //Create new view for login function in teh welcome controllder
    public function login() {
        //restrict the acess of the login page of welcome controller
        if ($this->session->userdata("user_id"))
        //redirecting to the dash board page
            return redirect("admin/dashboard");
        //End
        $this->load->view('login');
    }

    public function Signin() {
        $this->form_validation->set_rules('email', 'Email', 'required');
        $this->form_validation->set_rules('password', 'Password', 'required');

        $this->form_validation->set_error_delimiters('<div class="text-danger">', '</div>');

        if ($this->form_validation->run()) {
            $email = $this->input->post('email');
            $password = sha1($this->input->post('password'));
            $this->load->model('queries');
            $userExist = $this->queries->adminExist($email, $password);
            echo '<pre>';
            print_r($userExist);
            echo '<pre>';
//information saved in the session data will be accesed when teh user loged into the system
            //inside if the yser id exists user details will be stored inside the session
            if ($userExist) {
                if ($userExist->user_id == '1') {
                    $sessionData = [
                        'user_id' => $userExist->user_id,
                        'username' => $userExist->username,
                        'email' => $userExist->email,
                        'role_id' => $userExist->role_id,
                    ];
                    //redirect to teh dash board upon giving teh correct user id and password
                    //settin user data to the dashboard
                    $this->session->set_userdata($sessionData);
                    return redirect("admin/dashboard");
                    //if the coadmin login session creatiion whos id is grater than 1
                } else if ($userExist->user_id > '1') {
                    $sessionData = [
                        'user_id' => $userExist->user_id,
                        'username' => $userExist->username,
                        'email' => $userExist->email,
                        //'college_id' => $userExist->college_id,
                        'role_id' => $userExist->role_id,
                    ];
                    //redirect to teh dash board upon giving teh correct user id and password
                    //settin user data to the dashboard
                    $this->session->set_userdata($sessionData);
                    return redirect("users/dashboard");
                }
            } else {
                $this->session->set_flashdata('message', 'Email or password is incorrect');

                return redirect("welcome/login");
            }
        } else {
            $this->login();
        }
    }

    //crerate logout function for the user to logout
    public function logout() {
        //closing teh session inside logout function usinhg the userid
        $this->session->unset_userdata("user_id");
        return redirect("welcome/login");
    }

}

<?php include("inc/header.php"); ?>
<div class="container">
    <h3>COADMIN DASHBOARD</h3>

    <?php
//    echo $username = $this->session->userdata('username'); 
    $username = $this->session->userdata('username');
    ?>
    <h5>Welcome <?php echo $username; ?></h5>
    <hr>

    <div class="row">
        <table class="table table-hover">
            <thead>
            <th scope="col">ID</th>
            <th scope="col">Student Name</th>
            <th scope="col">College Name</th>
            <th scope="col">Email</th>
            <th scope="col">Gender</th>
            <th scope="col">Course</th>
            </thead>
            <tbody>
                <!--                if users contain the data-->
                <?php //if (count($students)): ?>
                <!--                Iterate the array to show he records-->
                <?php //foreach ($$students as $student): ?>
                <tr class="table-active">
                    <td><?php //echo $student->id;  ?></td>
                    <td><?php //echo $student->studentname;  ?></td>
                    <td><?php //echo $student->collegename;  ?></td>
                    <td><?php //echo $student->email;  ?></td>
                    <td><?php //echo $student->gender;  ?></td>
                    <td><?php //echo $student->course;  ?></td>   

                </tr>
                <?php //endforeach; ?>
                <?php //else: ?>

                <!--                If count is 0 table will not display any data-->
                <tr>
                    <td>No records found!</td>
                </tr>
                <?php //endif; ?>
            </tbody>
        </table>
    </div>

</div>
<?php include("inc/footer.php"); ?>