adding forgotten files

common/models/QuestionType.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace common\models;
+
+use Yii;
+use yii\behaviors\SluggableBehavior;
+
+/**
+ * This is the model class for table "question_type".
+ *
+ * @property int $id
+ * @property string $question_type
+ * @property string $slug
+ *
+ * @property Question[] $questions
+ */
+class QuestionType extends \yii\db\ActiveRecord
+{
+    /**
+     * {@inheritdoc}
+     */
+    public static function tableName()
+    {
+        return 'question_type';
+    }
+
+    public function behaviors()
+    {
+        return [
+            [
+                'class' => SluggableBehavior::class,
+                'attribute' => 'question_type',
+            ]
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rules()
+    {
+        return [
+            [['question_type'], 'string', 'max' => 255],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function attributeLabels()
+    {
+        return [
+            'id' => 'ID',
+            'question_type' => 'Тип вопроса',
+            'slug' => 'Slug',
+        ];
+    }
+
+    /**
+     * @return \yii\db\ActiveQuery
+     */
+    public function getQuestions()
+    {
+        return $this->hasMany(Question::className(), ['question_type_id' => 'id']);
+    }
+}