Routing in CodeIgniter for (:any) - php

Question

I'm trying to make my CodeIgniter application work similarly to WordPress.
I want to be able to make these kind of URLs:
http://www.example.com/my-post-example
http://www.example.com/new-headline-here
http://www.example.com/i-love-stackoverflow
My routing:
$route['(:any)'] = "core/index/$1";
Which will call my Core controller and pass the page name into the index function.
I then lookup in my database for the page name and display the page to the user. So far so good.
However, there will be times when I want to call another controller. For example:
http://www.example.com/admin/edit_page/3
http://www.example.com/admin/settings
Now I assume my route will just grab all these rules and send them into my Core controller. Is there a way to make an exception for certain pages? Or is it a good idea to do this check inside my Core controller.
For example,
if ($page not in DB) {
// Call controller/method
}
This seems a little redundant since I just want CodeIgniter to handle this.

Answer 1

The routing rule you using it is OK for your purpose.
If you use http://www.example.com/admin/edit_page/3 this link it will send you admin controller and edit_page method.It will not use routes any rule.
However you will get one problem if your link looks like this
http://www.example.com/my-post-example/test
It will try to go my-post-example controller and test method.
Again http://www.example.com/admin will use routes any rule, means it will redirect your to core controller instead of admin/index. In that case your url should be http://www.example.com/admin/index
Finally If you call your other link with controller/method name it will be OK using your any rule