我正在尝试解决客户端的问题.

他有一个在Codeigniter框架上运行的应用程序.
在此应用程序中,他正在通过DataTables查看分配列表.

在该应用程序中,存在三种不同的访问级别：管理员= 1,员工= 2,客户= 3

我试图限制分配列表,以仅显示属于单个客户的分配.我试图在控制器中为分配列表添加功能,但对我而言不起作用.

我究竟做错了什么？

public function assignlist( $status = "" ){
    $status1 = "Aktiv";
    if($status!=""){
        $status1 = $status; 
    }
    /* by Kenn */
    $log_in = $this->session->userdata('logged_in');
    $roleid = $log_in["role_id"];
    $CustomerID = $log_in["CustomerID"];
    /**/

    $this->datatables->select('er.EventId,er.EventName,cu.CustomerName as CustomerId,DATE_FORMAT(er.EventDate, "%d/%m/%Y") AS EventDate,er.TimeFrom,er.TimeTo,er.NoofGuardRequired,er.Remarks,emp.fullname as InsertBy,emp1.fullname as ModifiedBy,er.Status,er.Status as st,cu12.CustomerName as cuInsertBy, cu1.CustomerName as cuModifiedBy');
    $this->datatables->from('eventregistration er'); 
    $this->datatables->join('customer cu', 'cu.CustomerId = er.CustomerId', 'left');
    $this->datatables->join('employee emp', 'emp.emp_id = er.InsertBy', 'left');
    $this->datatables->join('employee emp1', 'emp1.emp_id = er.ModifiedBy', 'left');

    $this->datatables->join('customer cu12', 'cu12.CustomerId = er.InsertBy', 'left');
    $this->datatables->join('customer cu1', 'cu1.CustomerId = er.ModifiedBy', 'left');

    $this->datatables->where('er.Status',$status1);
    /* by Kenn */
    if ($roleid == "3"){
        $this->datatables->where('cu.CustomerID',$CustomerID);
    }
    /**/
    echo $this->datatables->generate();
}

解决方法:

删除同一表上的多个联接可能会解决您的问题.

public function assignlist( $status = "" ){
    $status1 = "Aktiv";
    if($status!=""){
        $status1 = $status; 
    }
    /* by Kenn */
    $log_in = $this->session->userdata('logged_in');
    $roleid = $log_in["role_id"];
    $CustomerID = $log_in["CustomerID"];
    /**/

    $this->datatables->select('er.EventId,er.EventName,cu.CustomerName as CustomerId,DATE_FORMAT(er.EventDate, "%d/%m/%Y") AS EventDate,er.TimeFrom,er.TimeTo,er.NoofGuardRequired,er.Remarks,emp.fullname as InsertBy,emp.fullname as ModifiedBy,er.Status,er.Status as st,cu.CustomerName as cuInsertBy, cu.CustomerName as cuModifiedBy');
    $this->datatables->from('eventregistration er'); 
    $this->datatables->join('customer cu', 'cu.CustomerId = er.CustomerId AND cu.CustomerId = er.InsertBy AND cu.CustomerId = er.ModifiedBy', 'left');
    $this->datatables->join('employee emp', 'emp.emp_id = er.InsertBy AND emp.emp_id = er.ModifiedBy', 'left');

    $this->datatables->where('er.Status',$status1);
    /* by Kenn */
    if ($roleid == "3"){
        $this->datatables->where('cu.CustomerID',$CustomerID);
    }
    /**/
    echo $this->datatables->generate();
}