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Kohana Exception Handling

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Some working example code snippet..

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  1. function hideme($auth=''){
  2. 	//try something first
  3. 	try{
  4. 			//if not TRUE throw an exception with error message
  5. 			if(empty($auth)) throw new Kohana_User_Exception('Parameter Empty','You should include a value');		
  6. 			//following lines won't work if an exception occur
  7. 			//another method where an exception may occur
  8. 			$this->checkNum($auth);
  9. 			//the last line of try catch block and if you see this text. Error FREE :)
  10. 			echo 'You passed a number :: '.$auth;
  11. 		//catch specific kohana_user_exception because it inheritance from kohana_exception	
  12. 		}catch(kohana_user_exception $e){
  13. 			//call a method before die:: very useful for closing </html> tags or closing DB
  14. 			die($this->error_handler($e));
  15. 		//not necessary in this sample code but if above exceptions fail to catch..
  16. 		//at least parent exception should be called like this
  17. 		}catch(kohana_exception $e){
  18. 			die($e->getMessage());
  19. 		}
  20. 	}
  21. 	//to be called before die
  22. 	private function error_handler($e){
  23. 		echo 'do something before die!<br />';
  24. 		echo $e;
  25. 	}
  26.  
  27. 	function checkNum($num){
  28. 		if(!(int)$num > 0) throw new Kohana_User_Exception('Invalid Number','This value is not a number. Please provide a valid number.');
  29. 		return TRUE;
  30. 	}

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