将所有主要逻辑代码迁移到extend中，并在service中注册调用；

app/common/command/curd/migrate.tpl

@@ -1,40 +0,0 @@
-use think\migration\Migrator;
-use think\migration\db\Column;
-
-class {$class_name} extends Migrator
-{
-    /**
-     * Change Method.
-     *
-     * Write your reversible migrations using this method.
-     *
-     * More information on writing migrations is available here:
-     * http://docs.phinx.org/en/latest/migrations.html#the-abstractmigration-class
-     *
-     * The following commands can be used in this method and Phinx will
-     * automatically reverse them when rolling back:
-     *
-     *    createTable
-     *    renameTable
-     *    addColumn
-     *    renameColumn
-     *    addIndex
-     *    addForeignKey
-     *
-     * Remember to call "create()" or "update()" and NOT "save()" when working
-     * with the Table class.
-     */
-    public function change()
-    {
-        $table = $this->table('{$table}')
-            ->setComment('{$table_info.TABLE_COMMENT}')
-            {volist name="table_columns" id="column"}->addColumn('{$column.field}', '{$column.type}', [{volist name="column.options" id="option"}'{$key}' => {$option|raw}, {/volist}])
-            {/volist}
-            {volist name="table_keys_uni" id="vo"}->addIndex('{$vo}',['unique'=>true])
-            {/volist}
-            {volist name="table_keys_text" id="vo"}->addIndex('{$vo}',['type'=>'fulltext'])
-            {/volist}
-            {volist name="table_keys" id="vo"}->addIndex('{$vo}')
-            {/volist}->create();
-    }
-}