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This article will explain in detail how Laravel only updates timestamps and associated timestamps. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Update only timestamps and associated timestamps

Contrary to the previous example, you may need to update only the updated_at field without changing the other columns.

Therefore, the following way of writing is not recommended:

$user- > update (['updated_at' = > now ()])

You can use a faster method:

$user- > touch ()

On the other hand, sometimes you want to update not only the updated_at of the current model, but also the records of the parent relationship.

For example, if a comment is updated, you want to update the updated_at of the post table as well.

Then, you need to define the $touches attribute in the model:

Class Comment extends Model {protected $touches = ['post']; public function post () {return $this- > belongsTo (' Post');}} this is the end of the article on "how Laravel updates timestamps and associated timestamps". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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