[eluser]Stuart Marsh[/eluser]
Hi everyone.
I'm fairly new to CodeIgniter but I am already impressed by how flexible and easy it is.
However like many people on here I am disappointed that I cannot call controllers within controllers. I know it goes against the MVC structure and that helpers can be created but this would be a much more flexible way to do things.
So I have started to play with CodeIgniter and I'm trying to extend the Loader library so I can call other controllers. I have a library in my app called MY_Loader.php and this is what I have put in it:
Code:
class MY_Loader extends CI_Loader {
/**
* Constructor
*
* @access public
*/
function MY_Loader()
{
parent::CI_Loader();
}
/**
* Controller Class Loader
*
* This function lets users load and instantiate controller classes.
* It is designed to be called from a user's app controllers.
*
* @access public
* @param string the name of the class
* @param mixed the optional parameters
* @return void
*/
function Controller($library = '', $params = NULL)
{
if ($library == '')
{
return FALSE;
}
if (is_array($library))
{
foreach ($library as $class)
{
$this->_ci_load_controller_class($class, $params);
}
}
else
{
$this->_ci_load_controller_class($library, $params);
}
$this->_ci_assign_to_models();
}
// --------------------------------------------------------------------
/**
* Load Controller class
*
* This function loads the requested controller class.
*
* @access private
* @param string the item that is being loaded
* @param mixed any additional parameters
* @return void
*/
function _ci_load_controller_class($class, $params = NULL)
{
// Get the class name
$class = str_replace(EXT, '', $class);
// We'll test for both lowercase and capitalized versions of the file name
foreach (array(ucfirst($class), strtolower($class)) as $class)
{
// Lets search for the requested library file and load it.
$is_duplicate = FALSE;
for ($i = 1; $i < 3; $i++)
{
$path = ($i % 2) ? APPPATH : BASEPATH;
$fp = APPPATH.'controllers/'.$class.EXT;
// Does the file exist? No? Bummer...
if ( ! file_exists($fp))
{
continue;
}
// Safety: Was the class already loaded by a previous call?
if (in_array($fp, $this->_ci_classes))
{
$is_duplicate = TRUE;
log_message('debug', $class." class already loaded. Second attempt ignored.");
return;
}
include($fp);
$this->_ci_classes[] = $fp;
return $this->_ci_init_class($class, '', $params);
}
} // END FOREACH
// If we got this far we were unable to find the requested class.
// We do not issue errors if the load call failed due to a duplicate request
if ($is_duplicate == FALSE)
{
log_message('error', "Unable to load the requested class: ".$class);
show_error("Unable to load the requested class: ".$class);
}
}
Basically it is a copy of Library and _ci_load_class but with the controller directory. This means controllers I can call the controller with $this->load->Controller('Controller_filename') then $this->controller_name->function(). However, when these 'sub' controllers try to use models or helpers they fail.
For example, If the controller I access uses a model I get the following message.
Code:
A PHP Error was encountered
Severity: Notice
Message: Undefined property: Form_Model::$db
Filename: models/form_model.php
Line Number: 21
Could anybody help me get this working or help me understand why it is failing?
