Allow upload of zipped hospital price file

Problem/Motivation

Some hospital pricing files are huge. I am trying to use this on a site where the file is 520MB, but the hosting provider only allows uploads of up to 256MB. This is a huge problem because the regulations say that the pricing must be in a SINGLE machine readable file.

Proposed resolution

Here’s what I’m thinking. Drupal has this Zip class for dealing with this stuff. I want to add a field widget that extends the normal file widget to allow a zipped version of any of the configured file formats (per a config option). If a zip is uploaded, the widget would test that it’s (a) a single file in the zip and (b) the file has an allowed type. If everything is above board, it would extract and then let everything proceed as usual. This is all theoretical, but it seems pretty straightforward.

Add a validation constraint that, if a zip is uploaded, forces it to be a single archived file of one of the other allowed types. (Relying on the field widget would be less robust). Then on a preSave, extract the archived file into a new file entity and have the hpt reference that new file. The zip ends up being left as a temporary file.

User interface changes

API changes

zips can work well

Data model changes

zips can work well