custom fields have been added to the documents

common/models/DocumentFieldValue.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace common\models;
+
+/**
+ * This is the model class for table "document_field_value".
+ *
+ * @property int $id
+ * @property int $document_field_id
+ * @property int $document_id
+ * @property string $value
+ *
+ * @property Document $document
+ * @property DocumentField $documentField
+ */
+class DocumentFieldValue extends \yii\db\ActiveRecord
+{
+    /**
+     * {@inheritdoc}
+     */
+    public static function tableName()
+    {
+        return 'document_field_value';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function rules()
+    {
+        return [
+            [['document_field_id', 'document_id', 'value'], 'required'],
+            [['document_field_id', 'document_id'], 'integer'],
+            [['value'], 'string', 'max' => 255],
+            ['value', 'unique', 'targetAttribute' => ['document_id', 'value'], 'message'=>'Значение каждого поля должно быть уникально в пределах документа'], //
+            [['document_id'], 'exist', 'skipOnError' => true, 'targetClass' => Document::className(), 'targetAttribute' => ['document_id' => 'id']],
+            [['document_field_id'], 'exist', 'skipOnError' => true, 'targetClass' => DocumentField::className(), 'targetAttribute' => ['document_field_id' => 'id']],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function attributeLabels()
+    {
+        return [
+            'id' => 'ID',
+            'document_field_id' => 'Поле',
+            'document_id' => 'Документ',
+            'value' => 'Значение',
+        ];
+    }
+
+    /**
+     * @return \yii\db\ActiveQuery
+     */
+    public function getDocument()
+    {
+        return $this->hasOne(Document::className(), ['id' => 'document_id']);
+    }
+
+    /**
+     * @return \yii\db\ActiveQuery
+     */
+    public function getDocumentField()
+    {
+        return $this->hasOne(DocumentField::className(), ['id' => 'document_field_id']);
+    }
+}