Auth :: id（）找不到用户id并返回null，laravel

Question

I am setting like and unlike options on articles. but in LikeController there is problem. when I push the like button it says ->

SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'user_id' cannot be null (SQL: insert into likes ( user_id , article_id , updated_at , created_at ) values (?, 5, 2019-05-30 07:58:34, 2019-05-30 07:58:34))

Updated JWT and Routes

Like model:

class Like extends Model
{
    public $timestamps = true;
    public $with = ["user"];

    protected $fillable = ["user_id", "article_id"];

    public function article()
    {
        return $this->belongsTo("App\Article");
    }

    public function user()
    {
        return $this->belongsTo("App\User");
    }
}

and LikeController:

use Auth;
use App\Article;
use App\Like;

public function like($id)
{
    $article = Article::find($id);

    $like =  Like::create([
        "user_id" => Auth::id(),
        "article_id" => $article->id
    ]);

    return Like::find($like->id);
}

public function unlike($id)
{
    $article = Article::find($id);

    Like::where("user_id", Auth::id())
        ->where("article_id", $article->id)
        ->first()
        ->delete();

    return 1;
}

I am not very sure why Auth::id() can't find the user id and return null?

Using JWT with vue.js

Routes:

Route::group(['prefix' => 'auth'], function ($router) {

  Route::post('register', 'AuthController@register');
  Route::post('login', 'AuthController@login');
  Route::post('logout', 'AuthController@logout');
  Route::post('refresh', 'AuthController@refresh');
  Route::post('me', 'AuthController@me');

});

Route::get("/like/{id}", [
        "uses" => "LikeController@like"
    ]);
Route::get("/unlike/{id}", [
        "uses" => "LikeController@unlike"
    ]);

AuthController and User

to set controller and user model I followed the docs: https://jwt-auth.readthedocs.io/en/develop/quick-start/

Answer 1

Try importing Auth as such

use Illuminate\\Support\\Facades\\Auth;

and getting the ID like this:

$user = Auth::user();
$id = $user->id;

Hope this helps

Add this middelware on kernel.php

protected $middlewareGroups = [
        'web' => [
            \Illuminate\Session\Middleware\StartSession::class,
        ],
];

this link might help : Answer Link

Answer 2

Auth::user()->id

使用此代码

Answer 3

first: ensure that route or Controller protected by auth middleware.

second: ensure that you are using correct guard for auth, if using multiple guard .

you should specify your guard name like this: `Auth::guard('admin')->id()`

Answer 4

You have missed to specify the middleware => api from the route groups. Also include the like related routes Or any protected routes within this routegroup.

config/auth.php shoud be updated as

'defaults' => [
    'guard' => 'api',
    'passwords' => 'users',
],

...

'guards' => [
    'api' => [
        'driver' => 'jwt',
        'provider' => 'users',
    ],
],

In routes/api.php

Route::post('login', 'AuthController@login')->name('login');

Route::group(['middleware' => 'api'], function ($router) {

    Route::group(['prefix' => 'auth'], function ($router) {
        Route::post('register', 'AuthController@register');
        # Route::post('login', 'AuthController@login'); // commented.
        Route::post('logout', 'AuthController@logout');
        Route::post('refresh', 'AuthController@refresh');
        Route::post('me', 'AuthController@me');

    });

    Route::get("/like/{id}", [
        "uses" => "LikeController@like"
    ]);
    Route::get("/unlike/{id}", [
        "uses" => "LikeController@unlike"
    ]);

});

Answer 5

You seem to have not protected your LikeController routes with auth.

Unless you have something like this in your LikeController for constructor:

    public function __construct()
    {
        $this->middleware('auth:api');
    }

then you should have your LikeController routes protected like this:

Route::group([
    'middleware' => 'api',
], function ($router) {

    Route::get("/like/{id}", [
        "uses" => "LikeController@like"
    ]);
    Route::get("/unlike/{id}", [
        "uses" => "LikeController@unlike"
    ]);

});

Then the correct way of getting the logged in used is

auth('api')->user()

or

Auth::guard('api')->user()

Answer 6

Ok ,

so i was also having that issue with my app when i was using jwt with vue js. for getting current Auth::user() .

You need to pass token with your request. if you check jwt core file, It getting user from token. and you are not passing token I guess.

If yes then please pass token along with your request. And also check the documentation of jwt . did you install your package properly? remember for laravel 5.5 or greater, that package version to use is jwt > 1.0.0 also, check the documentation of that version properly.