调用函数模型时出现CodeIgniter Undefined属性

Question

please I need help, I'm looking for the mistake from 1 day ago

Severity: Notice
Message: Undefined property: Login::$Usuario_model
Filename: api/login.php
Line Number: 27

Fatal error: Call to a member function obtener_usuario() on a non-object in /home/fpincheira/web/cobranza/application/controllers/api/login.php on line 27

this is my model usuario_model.php . This query is a example, my real query is other

<?php
  class Usuario_model extends CI_Model {

    function __construct(){
      parent::__construct();
      $this->db1 = $this->load->database('db1', TRUE);
    }

    function obtener_usuario($rut){
      $sql = "SELECT sysdate FROM dual"; //this is a example query
      $query = $this->db1->query($sql, array($rut));
      return $query->result_array();
    }
  }
?>

The controller login.php

<?php defined('BASEPATH') OR exit('No direct script access allowed');
  require APPPATH.'/libraries/REST_Controller.php';
  class Login extends REST_Controller {

    function __construct(){
      parent::__construct();
    }

    function validarUsuario_post(){
      try{
        $username = $this->post('user');

        $this->load->model('Usuario_model','usuario');
        $perfil_usuario = $this->usuario->obtener_usuario($username);
        //print_r($perfil_usuario);
      }catch(Exception $e){
        $this->response(array('error'=>$e->getMessage()), $e->getCode());
      }
    }
  }
?>

In my autoload.php I have loaded 'database' library.

Can you see the mistake?

Answer 1

You need replace the following lines :

$this->load->model('Usuario_model','usuario');
$perfil_usuario = $this->usuario->obtener_usuario($username);

with :

$this->load->model('usuario_model');
$perfil_usuario = $this->usuario_model->obtener_usuario($username);

Try and let me know by commenting.

Answer 2

answer the question.

I had to create the object, because to import the model codeigniter not create the instance the object.

$this->load->model('usuario_model');
$usuario = new usuario_model();

$perfil_usuario = $usuario->obtener_usuario($username);

this way I could access to function of model.

If somebody have a best answer, pliss comment, thanks

Regards

Answer 3

usuario_model.php and $this->load->model('Usuario_model','usuario'); Don't you think lowercase and uppercase model name is making difference. While calling to load model from controller U is in caps but actual model filename is in lowercase. So, model file is missing/not found.

are you getting $username value in controller? this link should help read the question part. include function used before CodeIgniter class changes the view loading order