How to secure the segment passed by the user?

[eluser]FlyingCat[/eluser]
Hi guys. I was wondering what are the best practice before sending segment to the Model.

For example:

Get the segment1 from
base_url/controller/query_detail/segment1

on my controller

Code:

public function query_detail($segment1)
{
//what are the best practice before I send the segment1 to the Model?
   $this->load->model('model');
   $this->model->query($segment1);  
   ......  
}

I hope I explain well. Thanks for the help.

[eluser]Bhashkar Yadav[/eluser]
yes, in the same way ... a little change

Code:

$this->model->model_method($segment1);

now you can access segment into model_method of model and also $segment1.

[eluser]FlyingCat[/eluser]
[quote author="Bhashkar" date="1327718355"]yes, in the same way ... a little change

Code:

$this->model->model_method($segment1);

now you can access segment into model_method of model and also $segment1.
[/quote]

I have the same thing you have. $this->model->query($segment1)
The 'query' is my model method. I thought people usually check the security before sending the segment to the Model? I just don't know what's the best practice in CI

[eluser]InsiteFX[/eluser]
If you are retrieving the segment then you should know the type and length of it!

Check your segment for it's type and length...

Never never never trust your users input!!!