注销后出错 [英] Error after loggin out

问题描述

我的程序正常工作..它有多个页面，如果我单击浏览器的按钮以返回，它会转到上一页：

My program works properly.. it has several pages and if i click on the button of the browser to go back, it goes to the previous page:

但是注销后出现错误。
当我注销时，该程序将我重定向到登录页面，一切似乎都正常，但不能正常工作

BUT there is an error after loggin out. When i logged out the program redirects me to the login page, everything seems to be working fine but it does not

当我单击注销时，如果我按浏览器中的按钮返回，该程序会将我重定向到登录系统，然后出现此错误：

When i click on "logout" and the program redirects me to the login system IF I press the button in the browser to go back i got this error:

不知道发生了什么事情：/

Do not know what is going on :/

这里是程序行错误：

我的代码，模型文件（ m_login）：

My code, the model file ("m_login"):

public function getDetails()
{
   $st = $this->db->SELECT('cursadas.date as date, cursadas.grade as grade, usuarios.username as user, materias.name as subject')->from('cursadas')
    ->join('usuarios','usuarios.id=cursadas.user_id')
    ->join('materias','materias.id=cursadas.subject_id')
    ->WHERE('cursadas.user_id=',$this->session->userdata['id'])
    ->get()->result_array();
return $st; 
}

我的注销功能：

        public function logout(){

        $this->session->sess_destroy();
        redirect('login/index');

    }

推荐答案

通过此方法更改getDetails（）方法

// $this->session->userdata['id'] to this code $this->session->userdata('id')


public function getDetails()
{
 $st = $this->db->SELECT('cursadas.date as date, cursadas.grade as grade,
usuarios.username as user, materias.name as subject')->from('cursadas')
->join('usuarios','usuarios.id=cursadas.user_id')
->join('materias','materias.id=cursadas.subject_id')
->WHERE('cursadas.user_id=',$this->session->userdata('id'))
->get()->result_array();
return $st; 
}

查看链接以获取更多信息

see the link for more info

https://www.codeigniter.com /user_guide/libraries/sessions.html#retrieving-session-data

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