+- CodeIgniter Forums (https://forum.codeigniter.com)
+-- Forum: Archived Discussions (https://forum.codeigniter.com/forumdisplay.php?fid=20)
+--- Forum: Archived Development & Programming (https://forum.codeigniter.com/forumdisplay.php?fid=23)
+--- Thread: Using model - issue while using methods (/showthread.php?tid=14221)
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
Hi I have a weird issue.
I load a model then I use some methods from that model but it says the model is null...
I tought it's because of the name of my model but after checking the reserved names it's look ok.
Here is my code within a model that works fine :
Code:
$this->load->model('log');
$this->log->add($some_vars);Example :
Code:
class Log extends Model {
function Log(){
parent::Model();
echo 'hello yourself';
}Quote:Undefined property: My_other_model::$log</p>
Call to a member function add() on a non-object
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]GSV Sleeper Service[/eluser]
looks like it's conflicting with the CI logging class, take a look at systems/codeigniter/Common.php
Code:
/**
* Error Logging Interface
*
* We use this as a simple mechanism to access the logging
* class and send messages to be logged.
*
* @access public
* @return void
*/
function log_message($level = 'error', $message, $php_error = FALSE)
{
static $LOG;
$config =& get_config();
if ($config['log_threshold'] == 0)
{
return;
}
$LOG =& load_class('Log');
$LOG->write_log($level, $message, $php_error);
}Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
I also tried this but it the same results :
Code:
$this->load->model('log','mylog');
$this->mylog->add($some_vars);I also changed the name of the model to mylog for example and it doesn't work either... It's look like something is wrong in my code but it's a totally classic model.
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
Can I load a model in a model? Maybe not? maybe that the reason I have that issue...
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
it looks like it's not possible.
http://ellislab.com/forums/viewthread/49625/
I have load my model in the controller but it sucks because I want to log some CRUD event of my models so it does not have to be manage in controller. Maybe I should set it has a helper? But I feel not because it's not an helper. I manage data in my Log model. I want my models to use the model "log" so they can log in the database some events.
I guess I should just have my log model to be a model and the other model to inherit the Log model so I can use those method.
Do you guys think that would be a good idea?
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
So basically I would have :
Code:
class Log extends Model {
function Log(){
parent::Model();
}
...
}And a model that is tracked by logs :
Code:
class My_model extends Log {
function My_model(){
parent::Model();
}
...
}Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Spir[/eluser]
finally I did this :
in my model called My_model (previously). So remember this is the model that need to load my Log model :
Code:
class My_model extends Model {
function __construct(){
parent::Model();
}
function add(){
// adding something
// then log the create
$this->_log(array('add','my_model'));
}
function _log($ome_vars){
$CI =& get_instance();
$CI->load->model('log');
$CI->log->add($ome_vars);
}
}NB: I'm not using "Log" as a name for my model anymore. I guess I would have some conflict.
Using model - issue while using methods - El Forum - 12-23-2008
[eluser]Colin Williams[/eluser]
Right. The issue is that when you load the model in another model, you don't get an instance of that model available to your current model. That's why getting a reference to the CI object is necessary.
For instance, this should work:
Code:
class A_model extends Model {
var $ci;
function A_model()
{
parent::Model();
$this->ci =& get_instance();
}
function some_method()
{
$this->load->model('other_model');
$this->ci->other_model->other_method();
}
}