Codeigniter passing parameter to controller index

Question

I'm building a tutorialsystem with codeigniter and would like to achieve the following URL structure:

/tutorials --> an introduction page with the list of all the categories
/tutorials/{a category as string} --> this will give a list of tutorials for the given category, e.g. /tutorials/php
/tutorials/{a category as string}/{an ID}/{tutorial slug} --> this will show the tutorial, e.g. /tutorials/php/123/how-to-use-functions
/tutorials/add --> page to add a new tutorial

The problem is that when I want to use the first two types of URLs, I'd need to pass parameters to the index function of the controller. The first parameter is the optional category, the second is the optional tutorial ID. I've did some research before I posted, so I found out that I could add a route like tutorials/(:any), but the problem is that this route would pass add as a parameter too when using the last URL (/tutorials/add).

Any ideas how I can make this happen?

Aidas · Accepted Answer · 2012-06-17 21:45:48Z

14

Your routing rules could be in this order:

$route['tutorials/add'] = "tutorials/add"; //assuming you have an add() method
$route['tutorials/(:any)'] = "tutorials/index"; //this will comply with anything which is not tutorials/add

Then in your controller's index() method you should be able to work out whether it's the category or tutorial ID is being passed!

answered Jun 17, 2012 at 21:45

Aidas

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1 Comment

Ryan Over a year ago

this has a problem for SEO purposes.

Decebal · Accepted Answer · 2012-12-21 10:01:02Z

10

I do think that a remap must be of more use to your problem in case you want to add more methods to your controller, not just 'add'. This should do the task:

function _remap($method)
{
  if (method_exists($this, $method))
  {
    $this->$method();
  }
  else {
    $this->index($method);
  }
}

answered Dec 21, 2012 at 10:01

Decebal

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Comments

EsTeGe · Accepted Answer · 2012-06-17 21:42:45Z

3

A few minutes after posting, I think I've found a possible solution for this. (Shame on me).

In pseudo code:

public function index($cat = FALSE, $id = FALSE)
{
    if($cat !== FALSE) {
        if($cat === 'add') {
            $this->add();
        } else {
            if($id !== FALSE) {
                // Fetch the tutorial
            } else {
                // Fetch the tutorials for category $cat
            }
        }
    } else {
        // Show the overview
    }
}

Feedback for this solution is welcome!

answered Jun 17, 2012 at 21:42

EsTeGe

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2 Comments

user1043994 Over a year ago

There are easier ways to achieve this in Codeigniter. Look at Aidas answer, that should do it.

EsTeGe Over a year ago

Indeed, I'm still stuck in the old-fashioned way of working :$

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