first commit

console/migrations/m181008_065248_create_use_field_table.php

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+<?php
+
+use yii\db\Migration;
+
+/**
+ * Handles the creation of table `use_field`.
+ */
+class m181008_065248_create_use_field_table extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+        $tableOptions = null;
+        if ($this->db->driverName === 'mysql') {
+            // http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
+            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
+        }
+        $this->createTable('use_field', [
+            'id' => $this->primaryKey(),
+            'field_id' => $this->integer(11)->notNull(),
+            'use' => $this->integer(11)->notNull(),
+        ], $tableOptions);
+
+        $this->addForeignKey(
+            'use_field_ibfk_additional_fields',
+            'use_field',
+            'field_id',
+            'additional_fields',
+            'id',
+            'RESTRICT',
+            'CASCADE'
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+        $this->dropForeignKey('use_field_ibfk_additional_fields', 'use_field');
+
+        $this->dropTable('use_field');
+    }
+}