DepartmentController.php

<?php

namespace App\Http\Controllers;

use App\Departments;
use App\User;
use Illuminate\Http\Request;

use App\Http\Requests;

class DepartmentController extends Controller
{
    /**
     * DepartmentController constructor.
     */
    public function __construct()
    {
        $this->middleware('auth');
        $this->middleware('lang');
    }

    /**
     * Get all the departments.
     *
     * @url    GET: /departments
     * @param  Request $request
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function index(Request $request)
    {
        $rels = ['users', 'managers'];
        $term = $request->get('term');

        if (empty($term)) {
            $data['departments'] = Departments::with($rels)->paginate(15);
        } else {
            $data['departments'] = Departments::with($rels)
                ->where('name', 'LIKE', "%$term%")
                ->paginate(15);
        }

        return view('departments.index', $data);
    }

    /**
     * Create form for registering new departments
     *
     * @url    GET: /departments/create
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function register()
    {
        dd('test');
        $data['users'] = User::all(['id', 'name']);
        return view('departments.create', $data);
    }

    /**
     * Create a new department.
     *
     * @url    POST: /departments/create
     * @param  Requests\DepartmentValidator $input
     * @return \Illuminate\Http\RedirectResponse
     */
    public function create(Requests\DepartmentValidator $input)
    {
        $depId = Departments::create($input->except('_token'))->id;

        $department = Departments::findOrFail($depId);
        $department->users()->attach($input->users);
        $department->managers()->attach($input->managers);

        session()->flash('message', 'Department has been created');
        return redirect()->back();
    }

    /**
     * Show The information about a specific department.
     *
     * @url   /departments/{id}
     * @param int $id The department id in the database.
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function show($id)
    {
        $data['department'] = Departments::find($id);
        return view('departments.show', $data);
    }

    /**
     * Update a department in the database.
     *
     * @url    POST: /departments/update/{id}
     * @param  Requests\DepartmentValidator $input
     * @param  int $id The department id in the database.
     * @return \Illuminate\Http\RedirectResponse
     */
    public function update(Requests\DepartmentValidator $input, $id)
    {
        Departments::find($id)->update($input->except('_token'));
        session()->flash('message', 'Department has been updated.');
        return redirect()->back();
    }

    /**
     * Destroy a department in the database.
     *
     * @url    GET: /departments/delete/{id}
     * @param  int $id The department identifier in the database.
     * @return \Illuminate\Http\RedirectResponse
     */
    public function destroy($id)
    {
        $department = Departments::findOrFail($id);
        $department->users()->sync([]);
        $department->managers()->sync([]);
        $department->delete();

        session()->flash('message', 'Department deleted');
        return redirect()->back();
    }
}

Error.text

url http://localhost:8000/departments/new returns white page.

Routes.php

<?php 

// Department routes.
Route::get('departments', 'DepartmentController@index')->name('department.index');
Route::get('/departments/search', 'DepartmentController@index')->name('department.search');
Route::get('/departments/{id}', 'DepartmentController@show')->name('department.specific');
Route::get('/departments/create', 'DepartmentController@register')->name('department.register');
Route::get('/departments/delete/{id}', 'DepartmentController@destroy')->name('department.destroy');
Route::post('/departments/create', 'DepartmentController@create')->name('department.store');
Route::post('/departments/update/{id}', 'DepartmentController@update')->name('department.update');