从数据库CodeIgniter提取数据时出错

Question

I am new to CodeIgniter and I have a problem when fetching data from database. How can I fix this? My code is

class Disaster_model extends CI_Model
{

public function __construct()
{
    parent::__construct();
    $this->table = 'disasters';
}

public function lists()
{
    $data = $this->db->get($this->table);
    return json_encode($data->result());
}
}

The errors are: Undefined property: Disaster::$db and Call to a member function get() on null . Please help me.

Answer 1

Oh, I forgot to autoload database on autoload.php .

I just added database in $autoload['libraries'] = array('dabatase');`

Answer 2

You need to setup the database connection in your code igniter config.

This is basically saying the ->db variable is null.

Setup your DB in Code Igniter