Use Laravel's built-in updater

app/Http/Controllers/AuthController.php

@@ -139,7 +139,6 @@ class AuthController extends Controller
             $player->uid = $user->uid;
             $player->player_name = $request->get('player_name');
             $player->tid_skin = 0;
-            $player->last_modified = get_datetime_string();
             $player->save();
 
             event(new Events\PlayerWasAdded($player));

app/Http/Controllers/PlayerController.php

@@ -86,7 +86,6 @@ class PlayerController extends Controller
         $player->uid = $user->uid;
         $player->player_name = $request->input('player_name');
         $player->tid_skin = 0;
-        $player->last_modified = get_datetime_string();
         $player->save();
 
         event(new PlayerWasAdded($player));

app/Models/Player.php

@@ -9,6 +9,9 @@ use Illuminate\Database\Eloquent\Model;
 
 class Player extends Model
 {
+    public const CREATED_AT = null;
+    public const UPDATED_AT = 'last_modified';
+
     /**
      * Json APIs.
      */
@@ -21,7 +24,6 @@ class Player extends Model
      * Properties for Eloquent Model.
      */
     public $primaryKey = 'pid';
-    public $timestamps = false;
     protected $fillable = ['uid', 'player_name', 'last_modified'];
 
     /**
@@ -99,8 +101,6 @@ class Player extends Model
             }
         }
 
-        $this->last_modified = get_datetime_string();
-
         $this->save();
 
         event(new PlayerProfileUpdated($this));
@@ -159,8 +159,7 @@ class Player extends Model
     public function rename($newName)
     {
         $this->update([
-            'player_name'   => $newName,
+            'player_name' => $newName,
-            'last_modified' => get_datetime_string(),
         ]);
 
         $this->player_name = $newName;
@@ -235,17 +234,4 @@ class Player extends Model
 
         return json_encode($json, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
     }
-
-    /**
-     * Update the date of last modified.
-     *
-     * @return mixed
-     */
-    public function updateLastModified()
-    {
-        // @see http://stackoverflow.com/questions/2215354/php-date-format-when-inserting-into-datetime-in-mysql
-        $this->update(['last_modified' => get_datetime_string()]);
-
-        return event(new PlayerProfileUpdated($this));
-    }
 }

database/factories/PlayerModelFactory.php

@@ -7,6 +7,5 @@ $factory->define(Player::class, function (Faker\Generator $faker) {
         'uid' => factory(App\Models\User::class)->create()->uid,
         'player_name' => $faker->firstName,
         'tid_skin' => 0,
-        'last_modified' => $faker->dateTime,
     ];
 });

tests/ModelsTest/PlayerTest.php

@@ -30,13 +30,6 @@ class PlayerTest extends TestCase
         $this->assertNull($player->getJsonProfile(-1));
     }
 
-    public function testUpdateLastModified()
-    {
-        $player = factory(Player::class)->make();
-        $this->expectsEvents(\App\Events\PlayerProfileUpdated::class);
-        $player->updateLastModified();
-    }
-
     public function testGetTidSkinAttribute()
     {
         $player = factory(Player::class)->create([