/**
     * @param Request $request
     */
    public function signUp(Request $request)
    {
        $this->validate($request, [
            'name' => 'required|string',
            'email' => 'required|email',
            'password' => 'required',
            'address' => 'required',
            'zip_code' => 'required|size:6',
            'city' => 'required',
            'country' => 'required|integer|unique:countries,id'
        ]);

        $user = new User();
        $user->name = $request->input('name');
        $user->email = $request->input('email');
        $user->password = Hash::make($request->input('password'));
        $user->address = $request->input('address');
        $user->zip_code = $request->input('zip_code');
        $user->city = $request->input('city');
        $user->country_id = $request->input('country');
        $user->save();
    }