如何在 Laravel (7) 中保存多态可变形模型的附加/额外列？

Question

Take a many-to-many polymorphic relationship sample from the Laravel docs website.

posts
    id - integer
    name - string

videos
    id - integer
    name - string

tags
    id - integer
    name - string

taggables
    tag_id - integer
    taggable_id - integer
    taggable_type - string
    extra_column_a - string
    extra_column_b - integer

How to insert data into the extra_column_a and extra_column_b column when creating a post/video with tag or when creating a tag with post/video?

Do I need to create a model class for the taggables table when it has extra columns?

Answer 1

Maybe something like this. Second parametr in arr

$video->tags()->attach($t, ['extra_column_a'=>'custstring','extra_column_b'=>'asd']);