Form not showing due to routing problem in action parameter - laravel

Question

I am working on an Excel import module as part of a CRM for my company. I want to import an excel sheet. I use the Maatwebsite Excel package, version 3.1. I want to show the form and then upload a sheet. However I can't even get to that point. I have already determined the issue is within the form route, just not sure what it is exactly that I am missing.
Routes that I use to display the page (index works fine)
Form used to get the Excel sheet imported
Navigation bar link in the menu
DataController (from which I am trying to call the import method)
If you know what may be wrong please do tell, this is really frustrating!
Route code:
Route::get('importeren', 'Datacontroller#index');
Route::post('import', 'Datacontroller#import');
<div class="container-fluid">
<form action="import" method="POST" enctype="multipart/form-data">
#csrf
<input type="file" name="import_file">
<br>
<input type="submit" value="Import">
</form>
</div>
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Imports\DataImport;
use Maatwebsite\Excel\Facades\Excel;
use App\Http\Controllers\Controller;
class DataController extends Controller
{
public function index(){
return view('importeren');
}
public function import(Request $request){
Excel::import(new DataImport(), $request->file('import_file'));
return redirect()->route('/home');
}
}

Answer 1

Don't use route() method because you're not defining any routes name, use something like:
form action="/import" method="POST" enctype="multipart/formdata">

Answer 2

you should use route() only with route name, use this instead :
return redirect('/home');

Answer 3

You can give a name to your route:
Route::post('import', 'Datacontroller#import')->name('import');
and leave the form action as it is with the route() helper:
<div class="container-fluid">
<form action="{{ route('import') }}" method="POST" enctype="multipart/form-data">
#csrf
<input type="file" name="import_file">
<br>
<input type="submit" value="Import">
</form>
</div>
You could also use the url() helper and leave the route with no name, but I highly recommend the option of giving your route a name.
<form action="{{ url('import') }}" method="POST" enctype="multipart/form-data">
Note that in the controller return you are also using a redirect to a named route, so I suggest that you give that route a name and use that name in the redirect. For example:
Route::get('home', 'SomeController#someMethod')->name('home');
and
return redirect()->route('home');