Modifying upload handlers on the fly - accessing request.POST also makes it immutable

[Rozza]

In ​the manual it warns accessing request.FILES will make the file uploaders immutable. However if you access request.POST like the @staff_member_required decorator does you can't then append or insert an upload handler in the view function.

As the parsing of the POST and FILES data is coupled - suggest updating the documentation to warn accessing request.POST has the same end effect as accessing request.FILES.

[Rozza]

Small documentation patch

[Rozza]

Added Test case - which shows the behaviour

[James Bennett]

(In [8758]) Fixed #7654: Documented the fact that file upload handlers must be modified before reading request.POST

[Jacob]

Milestone 1.0 deleted