Try catch method for capturing query related exception laravel 5

I am new to this try catch exception method so it will be helpful if you could provide detailed explanation of the answer to implement on the other files.

I am working on Laravel 5 and i want to use try catch while a put or post request is sent to the database. Below is my coding structure.

try{
        $result = DB::table('myTable')
                    ->where('uniqueTitle','=',$uniqueId)
                    ->increment($field, 1);
        }
        catch (Exception $e) {
            echo 'Caught exception: ',  $e->getMessage(), "\n";
        }

My postman output is

QueryException in Connection.php line 669:
SQLSTATE[42S22]: Column not found: 1054 Unknown column

I have intentionally changed the column name to throw an error.

Additionally, how do i check on the required fields too with try and catch method.

via Chebli Mohamed