File upload support in forms

[zackkrida]

Note

As part of this work, any TODO_FILES_IN_FORMS code comments in Mathesar MUST be resolved.

Problem

Mathesar's file functionality (officially released in 0.7.0) does not presently work with the forms feature. We notify users that file columns can not be added to forms:

Proposed solution

We plan to support these columns in forms, making the necessary backend changes for "anonymous" file upload.

On the frontend form builder side, we need to consider the minimum-viable functionality to allow form creators to validate the files. Ideas include:

• Restrict by filetype (extension or MIME)?
• Restrict by filesize

Additional context

[pavish]

On the form side, we need to consider the minimum-viable functionality to allow form creators to validate the files. Ideas include:
Restrict by filetype (extension or MIME)?
Restrict by filesize

@zackkrida Have users requested this? I'm wondering if this is essential for the minimum-viable case of allowing file uploads in forms, and whether it should be a part of this issue.

[zackkrida]

@pavish users have not requested it. Nor have they requested files in forms 😅. I'd like us to use our discretion about whether we need any restrictions on uploads or not. I'm open to not including this functionality in the MVP.