Add download-multiple-files-as-one-zip-archive, similar to 3.6.*

[eaquigley]

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Author Name: Gustavo Durand (@scolapasta)
Original Redmine Issue: 3753, https://redmine.hmdc.harvard.edu/issues/3753
Original Date: 2014-03-24

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Elizabeth pointed this out: we also need an ability to select multiple files, via checkboxes, then download them all in one zip file. Similarly to the functionality that already exists in DVN 3.*.

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Related issue(s): #28
Redmine related issue(s): 3435

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[landreev]

Will do this this week, possibly tomorrow.
Retagging the issue "beta 5".

[landreev]

Spoke about this to Elizabeth and Mike the other day. I have the back end for this (can pass multiple file ids to the API file access method and get back a zipped archive); but we decided to postpone adding support for this on the page till beta 8. Since we are likely going to rebuild the page, to accommodate using search for file display. So I'd rather not spend time now trying to figure out how to insert extra checkboxes into the existing file table.

[pdurbin]

I have the back end for this

I'm interested in potentially re-using this code for download of zip files via SWORD in #183.

[landreev]

Back end for this should be working.
The api call for this is /api/access/datafiles (plural datafiles, as opposed to /api/access/datafile access call for a single file).
usage is
/api/access/datafiles/x,y,z...

where x,y,z... is a comma-separated list of datafile ids. you should get back a zip file with the files and a "download manifest", similar to how it works in 3.6. if the total download size goes beyond the configurable limit, an "over the limit..." message is added to the manifest for each file that doesn't fit.

There's still no UI for selecting multiple files. (it still needs to be designed how it's going to work).
The ticket should be given to either Mike or Elizabeth or ... (?) for that.

[kcondon]

This only downloads the first file in the list.
Try:
https://dvn-build.hmdc.harvard.edu/api/access/datafiles/29,30,31
or
https://dvn-build.hmdc.harvard.edu/api/access/datafiles/33,34

[landreev]

Fixed, please retest.

[kcondon]

OK, seems to work as described, passing to Mike for front end design

[mheppler]

We've got a layout mocked up for downloading multiple files.

https://iqssharvard.mybalsamiq.com/projects/files-dataverse40/Dataset%20-%20Files

I'll put together the static version of this and pass it to Leonid for wiring up.

@landreev @scolapasta @eaquigley @kcondon

[mheppler]

Added static download button, and multiple select checkboxes to the files table on the Dataset page to be wired up.

Sending to @landreev to wire.

[landreev]

It should be working now;
Please note:

• there's a separate ticket Mike mentioned, above (Download button issues #1310), for how the "download" button is rendered;
• you need to have at least 2 files selected before the download link is activated;
• the "download all files from the dataset" button is disabled on purpose. we'll likely end up implementing this the way it's been done in 3.* instead - with a one-click way to select all the checkboxes

[kcondon]

OK, works, closing