adding forgotten files

common/models/Answer.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace common\models;
+
+use Yii;
+use yii\behaviors\TimestampBehavior;
+use yii\db\Expression;
+
+/**
+ * This is the model class for table "answer".
+ *
+ * @property int $id
+ * @property int $question_id
+ * @property string $answer_body
+ * @property int $answer_flag
+ * @property int $status
+ * @property string $created_at
+ * @property string $updated_at
+ *
+ * @property Question $question
+ */
+class Answer extends \yii\db\ActiveRecord
+{
+    const STATUS_PASSIVE = 0;
+    const STATUS_ACTIVE = 1;
+
+    const FLAG_TRUE = 1;
+    const FLAG_FALSE = 0;
+
+    /**
+     * {@inheritdoc}
+     */
+    public static function tableName()
+    {
+        return 'answer';
+    }
+
+    public function behaviors()
+    {
+        return [
+            [
+                'class' => TimestampBehavior::class,
+                'createdAtAttribute' => 'created_at',
+                'updatedAtAttribute' => 'updated_at',
+                'value' => new Expression('NOW()'),
+            ],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rules()
+    {
+        return [
+            [['question_id', 'answer_flag', 'status'], 'integer'],
+            [['answer_body', 'question_id', 'answer_flag', 'status'], 'required'],
+            [['created_at', 'updated_at'], 'safe'],
+            [['answer_body'], 'string', 'max' => 255],
+            [['question_id'], 'exist', 'skipOnError' => true, 'targetClass' => Question::className(), 'targetAttribute' => ['question_id' => 'id']],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function attributeLabels()
+    {
+        return [
+            'id' => 'ID',
+            'question_id' => 'Вопрос',
+            'answer_body' => 'Ответ',
+            'answer_flag' => 'Флаг ответа',
+            'status' => 'Статус',
+            'created_at' => 'Created At',
+            'updated_at' => 'Updated At',
+        ];
+    }
+
+    /**
+     * @return \yii\db\ActiveQuery
+     */
+    public function getQuestion()
+    {
+        return $this->hasOne(Question::className(), ['id' => 'question_id']);
+    }
+
+
+    public function getQuestionBody()
+    {
+        return $this->getQuestion()->one()->question_body;
+    }
+
+    public function getStatuses()
+    {
+        return [
+            self::STATUS_ACTIVE => 'Активен',
+            self::STATUS_PASSIVE => 'Не используется'
+        ];
+    }
+
+    public function getStatusText()
+    {
+        return $this->statuses[$this->status];
+    }
+
+    public function getFlags()
+    {
+        return [
+            self::FLAG_TRUE => 'Правильный',
+            self::FLAG_FALSE => 'Ошибочный',
+        ];
+    }
+
+    public function getFlagText()
+    {
+        return $this->flags[$this->status];
+    }
+
+    static function getCurrentAnswersNum($question_id)
+    {
+        return Answer::find()
+            ->where('question_id=:question_id', [':question_id' => $question_id])
+            ->andWhere('answer_flag=1')
+            ->andWhere('status=1')
+            ->count();
+    }
+}