download .zip with image and xml

[uf0]

In the collection section we need to download the single document and the metadata.
The metadata should be formatted as xml (ref to Europeana formats) and the file served as .zip

The .zip file should be save in media/ folder and than deleted once it has been downloaded

[danieleguido]

Almost done, there is already the endpoint http://localhost:8000/api/document/1234/download/ which let you download a zip file containing the file given as attachment (only if a data.downloadableoption is set). Check the download method

[danieleguido]

Zip should be temporary

[bianchimro]

@danieleguido zip could even be built in memory and served directly from the view if it should be generated and deleted on a per-request basis

https://stackoverflow.com/questions/2463770/python-in-memory-zip-library

If we want some sort of "caching" instead, the zip file could be generated each time a doc is saved and served statically. (but I think it's better to generate it on the fly)

[danieleguido]

I agree @bianchimro, the best choice would be to generate the zip on the fly. Can you do a quick PR :) ?

[bianchimro]

@danieleguido ok I'll take a look! :)