登录验证在CodeIgniter中不起作用

您好，所以我在CodeIgniter中构建了一个登录系统，在该系统中/应该允许数据库执行3个验证步骤，然后才允许访问特定页面。

三个步骤值是：active，is_member和is_admin

这是我在Users控制器中编写的代码：

public function login(){
    // Prohibit access if already logged in
    $this->User_model->session_comprobate_member();

    $this->form_validation->set_rules('username','Username','trim|required|min_length[4]');
    $this->form_validation->set_rules('password','Password','trim|required|min_length[4]');


    if ($this->form_validation->run() == FALSE){
        //Load View Into Template
        $this->template->load('public','login','users/login');
    } else {
       // Get Post Data from Database
        $username = $this->input->post('username');
        $password = $this->input->post('password');
        $enc_password = md5($password);
        $data_user = $this->User_model->login($username, $enc_password);

        if($data_user == true){
            $user_id = $this->User_model->get_userid($username);
            $users   = $this->User_model->get_username($user_id);

            if($users->active == 0){

            // Create error
            $this->session->set_flashdata('error', 'This account is banned or inactive');

            // Redirect to page
            redirect('dashboard/login');

            }

            if($users->is_admin == 0){

            // Create error
            $this->session->set_flashdata('error', 'You do not have permission to view this page');

            // Redirect to page
            redirect('dashboard/login');

            }

            if($users->is_member == 0){

            // Create error
            $this->session->set_flashdata('error', 'This account does not exists. Please try again.');

            // Redirect to page
            redirect('dashboard/login');

            } else {
            $sess_data = array(
                'user_id' => $user_id,
                'username'  => $username,
                'occupation' => 'occupation',
                'is_member' => true,
                'is_admin' => true,
                'active' => true
            );

            // Set Session Data
            $this->session->set_userdata($sess_data);

            // Create Message
            $this->session->set_flashdata('success', 'You are logged in');

            // Redirect to pages
            redirect('dashboard');
            }
        } else {
            // Create Error
            $this->session->set_flashdata('error', 'Invalid Login');

            // Redirect to pages
            redirect('dashboard/login');
        }
    }
}

这些值中的每一个都设置为TRUE(1)或FALSE(0)取决于用户帐户。我有一个树值等于1的帐户，因此它应该允许我访问；这是一张图片：登录验证满足三个值之后，即使出于某种原因，即使用户一直设置为“TRUE我”，我仍然可以访问我想要的东西：

$this->session->set_flashdata('error', 'This account is banned or inactive');

知道如何解决吗？谢谢。

这是我的模型：

    public function get($id)
    {
        $this->db->where('id', $id);
        $query = $this->db->get($this->table);
        return $query->row();
    }    
public function login($username, $password)
    {
        $this->db->select('*');
        $this->db->from($this->table);
        $this->db->where('username', $username);
        $this->db->where('password', $password);
        $this->db->limit(1);

        $query = $this->db->get();

        if ($query->num_rows() == 1) {
            return $query->row()->id;
        } else {
            return false;
        }
    }

    //I need to work on these two
    public function get_username($users) {
        $this->db->select('id');
        $this->db->from($this->table);
        $this->db->where('username', $users);
        return $this->db->get()->row;
    }

    public function get_userid($user_id) {
        $this->db->select('id');
        $this->db->from($this->table);
        $this->db->where('id', $user_id);
        return $this->db->get()->row();
    }
    ///
    //Check if admin
    public function is_admin($id) {
        $this->db->select('is_admin');
        $this->db->from($this->table);
        $this->db->where('id', $id);
        $is_admin = $this->db->get()->row('is_admin');
        if ($is_admin == 0) {
            redirect('/');
        } else {
            redirect('admin');
        }
    }

    //Check if member
    public function is_member($id) {
        $this->db->select('is_member');
        $this->db->from($this->table);
        $this->db->where('id', $id);
        $is_member = $this->db->get()->row('is_member');
        if ($is_member == 0) {
            redirect('/');
        } else {
            redirect('dashboard/login');
        }
    }

    //Check if active
    public function is_active($id) {
        $this->db->select('active');
        $this->db->from($this->table);
        $this->db->where('id', $id);
        $is_active = $this->db->get()->row('active');
        if ($is_active == 0) {
            redirect('/');
        } else {
            redirect('dashboard/login');
        }
    }

再一次感谢你的帮助。