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+--- Thread: Global class/functions (/showthread.php?tid=58286)
Global class/functions - El Forum - 05-30-2013
[eluser]epseix[/eluser]
I'm being such a plank (posted this in wrong section).
So, I'm finally getting the hang of the relationships between models, views and controllers - however... I have a question!
If I wanted to call a global class/function of some kind, to connect with mySql and define default variables needed for every page (meta tags, title etc.) WHERE exactly would I place it, and HOW would I include it in the basic structure of MVC.
Surely, having to repeat same class/function in every controller is unnecessary?
Many thanks!
Global class/functions - El Forum - 05-30-2013
[eluser]Pert[/eluser]
Really depends what exactly are you trying to do.
You can use <b>__construct()</b> magic method to run some code every time any controller methods are called:
Code:
class my_controller extends CI_Controller
{
function __construct()
{
parent::__construct();
// repeating code starts from here
...
}
function method()
{
// what ever you did in __construct has already been run
...
}
}You can also set up a model for all your metadata, autoload it with <b>config/autoload.php</b> and you can access it using <b>$this->metadata</b>. Again, you can use <b>__construct</b> method to get any data from database, so you don't have to manually initiate fetch routine.
Global class/functions - El Forum - 05-30-2013
[eluser]TheFuzzy0ne[/eluser]
I would suggest that you put it into the constructor of a controller you want to extend (such as MY_Controller), or put it into a helper somewhere, to save you repeating your code. That means that if you ever need to change that code, you only need to change it in a single place.
Global class/functions - El Forum - 05-30-2013
[eluser]CroNiX[/eluser]
An alternative is just to create a library or helper and autoload it so it would be available to all controllers, libraries, helpers, views, etc.
Global class/functions - El Forum - 05-31-2013
[eluser]epseix[/eluser]
[quote author="CroNiX" date="1369955725"]An alternative is just to create a library or helper and autoload it so it would be available to all controllers, libraries, helpers, views, etc.[/quote]
This does sound like the easiest method, and I can load the same helper in every controller by default...
I've looked at the user guide regarding helpers and it's slightly overwhelming. I'm wondering if there's a good tutorial or forum topic explaining the exact method of creating a helper like this - step-by-step etc.
(sorry, I'm a noob)
