Code Igniter - Trying to get property of a non object

Question

I am trying to implement cart functionality in codeigniter. In my controller I have a public function add and in my model a public function called get to fetch data from database according to the product selected.

here is my Controller

public function add() {
    $id = $this->input->post('id');
    $product = $this->products_model->get($id);

    echo "<pre>";
    print_r($product);  die();

    $data = array(
      'id' => $id,
      'name' => $product->pro_name,
      'qty' => 1,
      'price' => $product->pro_price
    );
    $this->cart->insert($data);
  }

and here is my Model

public function get($id) {
  $results = $this->db->get_where('products', array('pro_id' => $id));
  return $results->result_array();
}

When I print_r($product) I get an array like this.

Array
(
    [0] => Array
        (
            [pro_id] => 1
            [pro_name] => Beef Carrot & Pea Food
            [pro_price] => 150.00
            [pro_image] => 1.png
        )

)

But when I try to insert in the data array I get this error.

A PHP Error was encountered

Severity: Notice

Message: Trying to get property of non-object

Filename: controllers/cart.php

Line Number: 11

Backtrace:

File: E:\xampp\htdocs\ci\dogschew\application\controllers\cart.php
Line: 11
Function: _error_handler

File: E:\xampp\htdocs\ci\dogschew\index.php
Line: 315
Function: require_once

Answer 1

You need to access values using array syntax not object syntax

$product->pro_name instead of this use $product['pro_name']

Answer 2

Hope this will help you :

Since u r using single item with object in your controller,So you should use row() instead of result_array();

Your model should be like this :

public function get($id) 
{
  $results = $this->db->get_where('products', array('pro_id' => $id));
  return $results->row();
}

Your controller should be like this :

Print $data in your controller to check it has data;

public function add() 
{
     $id = $this->input->post('id');
     $product = $this->products_model->get($id);

     $data = array(
       'id' => $id,
       'name' => $product->pro_name,
       'qty' => 1,
       'price' => $product->pro_price
     );
     print_r($data); die();
     $this->cart->insert($data);
}

For more : https://www.codeigniter.com/user_guide/database/results.html

Answer 3

You are returning an array and not an object. Hence, $product will contain an array...

As the error says:

Trying to get property of non-object

Try this:

$data = [
    'id' => $id, 
    'name' => $product[0]['pro_name'], 
    'qty' => 1, 
    'price' => $product[0]['pro_price']
];

...or better yet, use row() method on your model's get() method, like so:

public function get($id)
{
    $results = $this->db->get_where('products', [
        'pro_id' => $id
    ]); 

    return $results->row();
}

Using that, you can now have:

$data = [
    'id' => $id, 
    'name' => $product->pro_name, 
    'qty' => 1, 
    'price' => $product->ipro_price
];

Source: https://www.codeigniter.com/user_guide/database/results.html#result-rows