rescue helper in laravel

rescue helper in Laravel, Provides technique to handle exception , Where you can pass parameters as in closure methods.

When this rescue helper executes the closure and catch any exception during execution , It caught all exception and thrown all exception a into exception handler.

We are giving example to caught all exception and thrown all exception into exception handler using rescue helper.

public function store(Request $request) 
{ 
         
        rescue(function () { 
        $user = new User();   
        $user->name = $request['name'];   
        $user->user_id = Auth::user()->id;   
        $user->c_id = $request['courseId'];   
        $user->save(); 
    }, function() { 
        request()->session()->flash('unsuccessmsg', 'Failed to add user records.');   
        return redirect()->back(); 
    }, true); 
}

Based on above example, rescue() helper can accept three arguments.

1st Parameters – It having code that we want exception handled.

2nd Parameters – This is optional closure , exception area occurred when executed this block of code or return the default value when exception are found .

3rd parameters– It is optional parameters accepts boolean that determine whether report the exception return or not.

• If its true, rescue helper return the exception
• If its false, rescue helper don’t return any exception.

 

If you want to know that how to define rescue helper i original . Please look at the below code

**
 * Catch a potential exception and return a default value.
 *
 * @param  callable  $callback
 * @param  mixed  $rescue
 * @param  bool  $report
 * @return mixed
 */
function rescue(callable $callback, $rescue = null, $report = true)
{
    try {
        return $callback();
    } catch (Throwable $e) {
        if ($report) {
            report($e);
        }

        return $rescue instanceof Closure ? $rescue($e) : $rescue;
    }
}

 

 

 

 

I hope , It makes you to clear idea about rescue() helper that helps in your coding .