To fetch data from mysql table using hooks codeigniter - mysql

Question

I am new for hooks in codeigniter. I have enabled the hooks in config file.
$config['enable_hooks'] = TRUE;
and then in hooks.php I have written my hook that is like below
$hook['pre_controller'] = array(
'class' => 'MyClass',
'function' => 'Myfunction',
'filename' => 'Myclass.php',
'filepath' => 'hooks',
'params' => '');
AND the class having function is as below
class MyClass {
function MyClass() {
$this->CI = &get_instance();
require_once(APPPATH . 'config/database.php');
}
function Myfunction() {
$record = $this->CI->db->SELECT('*')
->FROM('currency')
->get()
->result();
echo "<pre>";
print_r($record);
die;
}}
but i am getting a blank page. please tell me what is wrong with me.

Answer 1

I think your main problem was in this area.
function MyClass() {
$this->CI = &get_instance();
require_once(APPPATH . 'config/database.php');
}
Try
Note: codeigniter 3 versions are case sensitive should be first letter upper case only on class and file name.
application > hooks > My_class.php
<?php
class My_class {
public function __construct() {
$this->CI = &get_instance();
// Auto load database
// require_once(APPPATH . 'config/database.php');
}
public function my_function() {
$query = $this->CI->db->get('currency');
$record = $query->result_array();
echo "<pre>";
print_r($record);
echo "</pre>";
}
}
Config Hook
$hook['pre_controller'] = array(
'class' => 'My_class',
'function' => 'my_function',
'filename' => 'My_class.php',
'filepath' => 'hooks',
);
Autoload the database better option
$autoload['libraries'] = array('database');
Codeigniter Hooks