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+--- Thread: Can't acccess personnal library (/showthread.php?tid=65771)
Can't acccess personnal library - Theo - 07-22-2016
Hi all ,
I've just created a library called Cms and i've follow those steps : http://www.codeigniter.com/user_guide/general/creating_libraries.html
When i try to access function in my library i obtain error : PHP FATAL ERROR : Call to a member function getTags() on a non-object
The controller code is :
PHP Code:
$this->load->library('Cms');
$pageName = "index";
$data['cms'] = $this->Cms->getTags($pageName);
$this->load->view('accueil', $data);
My class is :
PHP Code:
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Cms {
public function getTags($pageName)
{
$query = $this->db->query("SELECT * FROM cms WHERE 'page_name' = $pageName");
foreach ($query->result_array() as $row)
{
return $row;
}
}
}
I've checked many times mispelled word, but everything seems to be ok !!
I'm lost !
Thank for your help !
RE: Can't acccess personnal library - Theo - 07-22-2016
(07-22-2016, 05:48 AM)dubefx Wrote: $data['cms'] = $this->cms->getTags($pageName);
(lower C)
Thank you but it doesn't work !
RE: Can't acccess personnal library - Avenirer - 07-22-2016
You are using CI methods inside the library without instanciating the CI. Take a look here: https://codeigniter.com/user_guide/general/creating_libraries.html#utilizing-codeigniter-resources-within-your-library
...I am reffering to the "$this->db..." part.
RE: Can't acccess personnal library - Theo - 07-22-2016
(07-22-2016, 06:07 AM)Avenirer Wrote: You are using CI methods inside the library without instanciating the CI. Take a look here: https://codeigniter.com/user_guide/general/creating_libraries.html#utilizing-codeigniter-resources-within-your-library
...I am reffering to the "$this->db..." part.
Thank you very much it works !
Here is my new library :
PHP Code:
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Cms {
public function __construct()
{
// Assign the CodeIgniter super-object
$this->CI =& get_instance();
}
public function getTags($pageName)
{
$query = $this->CI->db->get_where('cms', array('page_name' => $pageName), 1);
foreach ($query->result_array() as $row)
{
return $row;
}
}
}
RE: Can't acccess personnal library - Wouter60 - 07-23-2016
Usually, collecting data from your database is done by a Model, not a Library.
In a model, you can use the $this->db object without instantiating the super-object.
One more tip about your method. You are looping through a result_array(), but it seems that you expect the result to be 1 record.
In that case you can return this record like this:
PHP Code:
$query = $this->CI->db->get_where('cms', array('page_name' => $pageName), 1);
return $query->row_array();
RE: Can't acccess personnal library - Theo - 07-23-2016
(07-23-2016, 01:39 AM)Wouter60 Wrote: Usually, collecting data from your database is done by a Model, not a Library.
In a model, you can use the $this->db object without instantiating the super-object.
One more tip about your method. You are looping through a result_array(), but it seems that you expect the result to be 1 record.
In that case you can return this record like this:
PHP Code:$query = $this->CI->db->get_where('cms', array('page_name' => $pageName), 1);
return $query->row_array();
Hello and thank you wouter for your help.
I don't really know how to use the personal librairies; but if i understand, i had to call a specific model in the library as we use to do in controllers ?
If i use load->model in the library i have to instanciate CI or not ?
It's not really clear for me as i develop for the first time my own library !
Thank you very much !
RE: Can't acccess personnal library - PaulD - 07-23-2016
Hi,
In the library you extend CI as you have done.
The loader class is in the CI object, so you load the model via your CI instance:
PHP Code:
$this->CI->load->model('whatever_model');
The model though, as it is loaded into the CI instance, does not need to extend CI, just extends the CI_model as normal.
PHP Code:
<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Example_model extends CI_Model {
public function __construct()
{
parent::__construct();
}
public function get_user()
{
$this->db->from('whatever');
// etc etc.
}
}
Hope that helps
Paul
RE: Can't acccess personnal library - Theo - 07-24-2016
(07-23-2016, 04:33 AM)PaulD Wrote: Hi,
In the library you extend CI as you have done.
The loader class is in the CI object, so you load the model via your CI instance:
PHP Code:$this->CI->load->model('whatever_model');
The model though, as it is loaded into the CI instance, does not need to extend CI, just extends the CI_model as normal.
PHP Code:<?php defined('BASEPATH') OR exit('No direct script access allowed');
class Example_model extends CI_Model {
public function __construct()
{
parent::__construct();
}
public function get_user()
{
$this->db->from('whatever');
// etc etc.
}
}
Hope that helps
Paul
Thank you Paul for your help too. I knew i was not using an optimized way to code but it was a first shot .
Thank you veryyyy muchhhh !!