public function changePassword(Request $request)
{
    $user = Auth::user();

    $curPassword = $request->input['curPassword'];
    $newPassword = $request->input['newPassword'];

    if (Hash::check($curPassword, $user->password)) {
        $user_id = $user->id;
        $obj_user = User::find($user_id)->first();
        $obj_user->password = Hash::make($newPassword);
        $obj_user->save();

        return response()->json(["result"=>true]);
    }
    else
    {
        return response()->json(["result"=>false]);
    }
}

$curPassword = $request->curPassword;
$newPassword = $request->newPassword;

$curPassword =$request->input('curPassword');
 $newPassword = $request->input('newPassword');

$curPassword = $request->input['curPassword'];
 $newPassword = $request->input['newPassword'];

$request->user()->fill([
            'password' => Hash::make($request->newPassword)
        ])->save();

public function changePassword()
{
    $this->validate(request(), [
        'current_password' => 'required|current_password',
        'new_password' => 'required|string|min:6|confirmed',
    ]);

    request()->user()->fill([
        'password' => Hash::make(request()->input('new_password'))
    ])->save();
    request()->session()->flash('success', 'Password changed!');

    return redirect()->route('password.change');
}

public function boot()
{
    // current password validation rule
    Validator::extend('current_password', function ($attribute, $value, $parameters, $validator) {
        return Hash::check($value, Auth::user()->password);
    });
}

'current_password' => "The :attribute is invalid.",

$obj_user = User::find($user_id)->first();

$obj_user = User::find($user_id);

// Retrieve a model by its primary key...
$flight = AppFlight::find(1);

// Retrieve the first model matching the query constraints...
$flight = AppFlight::where('active', 1)->first();