Having troubles posting form data with ajax to controller action (laravel)

Route:

Route::post('admin/cms/create','CmsController@createmenu'); 

Controller's action:

public function createmenu(Request $request){ $menu = new menu; $this->validate($request,[ 'name'=>'required', 's_title'=>'required_if:s_exist,1', 's_desc'=>'required_if:s_exist,1', 's_path'=>'required_if:s_exist,1', 'category'=>'required' ]); $path=$request->file('s_path')->store('img/slideshow'); $menu::create([ 'name'=>$request->name, 's_exist'=>$request->s_exist, 's_title'=>$request->s_title, 's_desc'=>$request->s_desc, 's_path'=>$path, 'category'=>$request->category ]); return redirect('admin/cms'); } 

Ajax (jquery):

$("#f_ins_menu").on("submit",function(e){ e.preventDefault(); var data={}; $.ajax({ type:"POST", //url:$(this).attr("action"), //I would like it to work with this dynamic url url:"cms/create", //this file is inside the folder admin //I also tried without the map function data:$(this).serializeArray().map(function(x){data[x.name] = x.value;}), contentType:false, cache:false, processData:false, }); }); 

The createmenu action works without the ajax

I have another action that uses Ajax and it works, but the difference is: in that action I don't pass Request $request, in fact I don't pass anything.

I have tried in native PHP and it works. Note that I added contentType:false, cache:false, processData:false, because I also pass a file.

I have tried to die and dumb (dd) the $request param and I get a huge block of code, I think a class, so my thoughts are that Request $request param doesn't get the data I pass through ajax

And yes I have included CSRF_FIELD with the meta tag trick that I found here https://laravel.com/docs/5.4/csrf

Can someone help me with at least seeing the data that I pass is array format or json format, doesn't matter.

I don't want you guys to go over all that code. Can you give me the correct version of this function/action.

public function createmenu(Request $request){ return dd($request); //I've tried this but it returns alot of code in console.log when I do the success:function() } 

I just want to see the data that I pass, at least, I can go from there.

EDIT:

Forgot to mention that with the validate method the HTTP response is 422 and without the validation the HTTP response is 500

EDIT 2:

Ok, so do not use die and dumb (dd()) when responding to ajax, just use return and some data. To access the request from ajax I was able to, thanks to @Lorav's comment like this:

data:{data:$(this).serialize()}, 

and

$data = $request->data; 

So it was not a Request class problem, my syntax was wrong.