How to filter by parameters of another model in GridView?

Question

Yii

There are two tables Posts (id, name, author_id) and Hashtags (id, hashtag, post_id). Since a post can have multiple hashtags, I store the hashtags of a post in a separate table. Made models through Gii. It is necessary to make it possible to filter posts by hashtag in the GridView in the Posts model view. How to implement?

Answer 1

I recommend to disassemble this article:
https://www.yiiframework.com/wiki/851/yii2-gridvie...
There is just an example with hasMany
B to catch up:
https://www.yiiframework.com/wiki/780/ drills-searc... (here are more examples, I think it will be interesting to finally understand the searchModel)