Hey guys, i have a pretty quick question. I need to make an IF statement that does #action if a certain param (params[:theme]) is set.

How would i go about coding that with ruby? As an example I'll include the PHP equivilent of what i need to do...

Code:
<?php
 if (isset($_GET['id'])){
    # Do some code here, id had a value.
  }else{
    # Do some code here, id did NOT have a value.
  }
 ?>
OR

Code:
<?php
 if (empty($_GET['id'])){
    # Do some code here, id did NOT have a value.
  }else{
   # Do some code here, id had a value.
  }
 ?>
Thanks,
- Jeremy