How to implement file upload and download in record field in GridView?

Question

Yii

Good afternoon. Can you please tell me how to implement this functionality? Let me explain what I need here:

In terms of functionality, the user on the page sees entries that are weekly. Selects for which week the entry he needs and to this entry should upload a file (in the database field "file"). And make it possible to download this file. There are no problems with loading a file under standard conditions, but with such functionality in GridView it caused a problem.

Answer 1

which are weekly.

this is important, now if it were monthly - everything is different there. What the hell is this spam? Wouldn't it be easier to ask "how to insert an input for uploading files into a GridView row?"
there is an actionColumn for this: https://www.yiiframework.com/doc/api/2.0/yii-grid-... you can put a modal with a loader there, for example. Yes, and you can simply put the form with an input (there is a file - a link to the file, there is no file - here's the form for you). You can insert some kind of widget and load it with ajax. What exactly is the problem?