类似系统的数据库模式

I've been thinking about a liking system for my website, and I can't determine the best way to approach it. I'm using MySQL, and right now, I have an activities table, for posts of text, pictures, videos, etc, and a comments table, for comments. You can like both comments and activity posts, so how should I go about with the columns of the like table? I am open to suggestions of changing the whole schema all together for a more coherent design.

我一直在考虑为我的网站设计一个喜欢的系统，我无法确定最好的方法。我正在使用MySQL，现在，我有一个活动表，用于文本，图片，视频等的帖子，以及评论表。您可以同时阅读评论和活动帖子，那么我应该如何处理相似表格的列？我愿意接受改变整个架构的建议，以获得更加连贯的设计。

1 个解决方案

#1

Just make a table called likes with a structure like this:

只需使用如下结构创建一个名为likes的表：

`id` int(11) NOT NULL AUTO_INCREMENT,
`userid` int(11) NOT NULL,
`post_type` varchar(10) NOT NULL,
`post_id` int(11) NOT NULL,
`date` datetime NOT NULL,
 PRIMARY KEY (`id`)

Then whenever someone likes an activity post, you would insert the ID of that user, the post_type as activity, and then post_id would be the post ID (obviously).

然后，每当有人喜欢活动帖子时，你会插入该用户的ID，post_type作为活动，然后post_id将是帖子ID（显然）。

If someone likes a comment, you would do the same thing but put comment for the post type instead.

如果有人喜欢评论，你会做同样的事情，但会对帖子类型进行评论。

Then to get the likes for an activity post:

然后获取活动帖子的喜欢：

SELECT * FROM `likes` WHERE post_id = 'id' AND post_type = 'activity'

You would just need to replace 'id' with the ID variable.

你只需要用ID变量替换'id'。

The same would be for comments (except you would need to change the post_type of course).

注释也是一样（除了你需要更改post_type）。

I hope this helps you get an idea on how to go about making a like system for your website :)

我希望这可以帮助您了解如何为您的网站制作类似的系统:)

#1