One of my CodeIgniter Controller functions needs to call a recursive function as part of its functionality. The function call chokes if I put it inside the controller class, and it can't access database functions ($this->db->get())
if I put it outside the class. Would making it a helper function fix this problem?
You can get instance:
$CI =& get_instance();
After that you will be able to use $CI->db
for queries..
If you want to use $this in libraries, helpers, and access all the methods:
$this->ci =& get_instance();
$this->ci->load->database();
You can do also:
$this->ci->config->item('languages');
or
$this->ci->load->library('session');
We can define a function in helper
if (!function_exists('getRecordOnId'))
{
function getRecordOnId($table, $where){
$CI =& get_instance();
$CI->db->from($table);
$CI->db->where($where);
$query = $CI->db->get();
return $query->row();
}
}
and we can call from view like
$recordUser = getRecordOnId('users', ['id' => 5]); //here 5 is user Id which we can get from session or URL.
//Select Data:
$this->db->select(‘fieldname seperated by commas’);
$this->db->from(‘table’);
$query = $this->db->get();
$results=$query->result() ;
//Joins:
$this->db->select(‘*’);
$this->db->from(‘table1′);
$this->db->join(‘table2′, ‘table2.id = table1.id’);
$query = $this->db->get();
We may get it from http://skillrow.com/codeignitor-database-functions/
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.