Apply fixes from StyleCI (#31036)

Author: taylorotwell

src/Illuminate/Database/Eloquent/Concerns/HasAttributes.php

@@ -536,11 +536,11 @@ protected function castAttribute($key, $value)
     }
 
     /**
-      * Cast the given attribute using a custom cast class.
-      *
-      * @param  string  $key
-      * @return mixed
-      */
+     * Cast the given attribute using a custom cast class.
+     *
+     * @param  string  $key
+     * @return mixed
+     */
     protected function getClassCastableAttribute($key)
     {
         if (isset($this->classCastCache[$key])) {
@@ -705,7 +705,8 @@ protected function setClassCastableAttribute($key, $value)
     {
         if (is_null($value)) {
             $this->attributes = array_merge($this->attributes, array_map(
-                function () { return null; },
+                function () {
+                },
                 $this->normalizeCastClassResponse($key, $this->resolveCasterClass($key)->set(
                     $this, $key, $this->{$key}, $this->attributes
                 ))
@@ -719,7 +720,7 @@ function () { return null; },
             );
         }
 
-       unset($this->classCastCache[$key]);
+        unset($this->classCastCache[$key]);
     }
 
     /**
@@ -1031,7 +1032,7 @@ protected function isJsonCastable($key)
      */
     protected function isClassCastable($key)
     {
-         return array_key_exists($key, $this->getCasts()) &&
+        return array_key_exists($key, $this->getCasts()) &&
                 class_exists($class = $this->getCasts()[$key]) &&
                 ! in_array($class, static::$primitiveCastTypes);
     }

src/Illuminate/Database/Eloquent/Model.php

@@ -1681,18 +1681,18 @@ public function __toString()
     }
 
     /**
-      * Prepare the object for serialization.
-      *
-      * @return array
-      */
-     public function __sleep()
-     {
-         $this->mergeAttributesFromClassCasts();
-
-         $this->classCastCache = [];
-
-         return array_keys(get_object_vars($this));
-     }
+     * Prepare the object for serialization.
+     *
+     * @return array
+     */
+    public function __sleep()
+    {
+        $this->mergeAttributesFromClassCasts();
+
+        $this->classCastCache = [];
+
+        return array_keys(get_object_vars($this));
+    }
 
     /**
      * When a model is being unserialized, check if it needs to be booted.

tests/Integration/Database/DatabaseEloquentModelCustomCastingTest.php

@@ -5,10 +5,6 @@
 use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
 use Illuminate\Contracts\Database\Eloquent\CastsInboundAttributes;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Carbon;
-use Illuminate\Support\Facades\Schema;
-use Illuminate\Support\Str;
 
 /**
  * @group integration