Group Level Wiki: BE Update attachment API to support Group Level Wiki

Problem to solve

Uploading attachments to a project wiki happens through the post ":id/wikis/attachments" endpoint. This needs to be adapted to work with group wikis.

Further details

Proposal

We can refactor the existing endpoint for reuse in both the /projects and /groups API contexts (separate endpoints for each container type).

Permissions and Security

• Adapt the existing authorization checks for group wikis.
• Respect the group wiki feature flag.
• Ensure there are multiple tests with different permission configurations to make sure the Web UI and the REST return the same level of data and avoid data leaks.

Documentation

Availability & Testing

Links / references