# 跳过回调

主要有 4 种方式：

**update\_columns 和 update\_column** \
 它们都是直接执行 SQL 语句，不会触发回调方法。

使用举例：

```ruby
user.update_columns(last_request_at: Time.current)
```

**save(:validate => false)**

跳过 Model 里的所有校验。

**skip\_callback** \
 跳过某个回调。

使用举例：

```ruby
class Writer < Person
  skip_callback :validate, :before, :check_membership, if: -> { self.age > 18 }
end
```

**x\_without\_callbacks** \
&#x20;以 object.send(:x\_without\_callbacks) 跳过某个系列的回调。

使用举例：

```ruby
object.send(:create_without_callbacks)
object.send(:update_without_callbacks)
```


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