Modified API and created its tests

app/AccessLog.php

@@ -9,8 +9,16 @@ class AccessLog extends Model
 {
     use SoftDeletes;
 
+    protected $fillable = [
+        'siswa_id',
+    ];
+
     protected $with = [ 'siswa' ];
 
+    protected $date = [
+        'created_at', 'updated_at', 'deleted_at',
+    ];
+
     public function siswa()
     {
         return $this->belongsTo('App\Siswa');

app/Siswa.php

@@ -8,4 +8,17 @@ use Illuminate\Database\Eloquent\SoftDeletes;
 class Siswa extends Model
 {
     use SoftDeletes;
+
+    protected $fillable = [
+        'nama', 'nisn', 'kelas', 'tempat_lahir', 'tanggal_lahir', 'lulus',
+    ];
+
+    protected $dates = [
+        'created_at', 'updated_at', 'deleted_at',
+    ];
+
+    protected $casts = [
+        'tanggal_lahir' => 'datetime:Y-m-d',
+        'lulus' => 'boolean',
+    ];
 }