Re: passing $_POST variables to classes

amygdala wrote:
Hi all,

I'm starting this new project in which I'ld like to implement sort of a design pattern I have seen being used in the CodeIgniter framework.

Basically, the site will examine the URI and based on the segments of the URI it will fire up some controller class, for instance, say I have an inbox in which end-users can view messages they got from other users, they'ld start at:

http://www.somesite.com/inbox/view/

This will then call upon the function view in the class inbox:

class Inbox extends Controller
{
// ...
public function view()
{
// ...
}
// ...
}

Any trailing segments of the URI will be passed as supplement arguments to the function.

Now, if $_POST variables are sent to some page and are needed by the called upon function in the appropriate class, would it be bad practice to simply extract those $_POST variables from the superglobal $_POST inside this function? Preferably I would like to send the $_POST variables as arguments to the function, but I'm not sure how to implement this correctly, nor am I even completely sure as to why this would be better practice, other than that the function will only accept predefined arguments.

What are your views on implementing such a 'pattern' (if you will). Would you even suggest such an implementation, or am I bound to get into trouble with proposed pattern?

Thank you in advance.



It's better to pass parameters. It makes your class reusable.

What happens, for instance, if later you decide to store the data in the $_SESSION variable? Or you need to change the name of the $_POST variable, i.e. due to a conflict? Your existing code would be pretty worthless.

A compromise would be to have a function which only extracts the data, but I don't like that.

And you can send the variables - just like you do anything else, i.e.

func($_POST['var'1]);



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