Delete confirm

[qadan]

What does this Pull Request do?

Allows for a confirmation screen for the 'Delete media and files' action. Also reworks the action a little to be more in line with other entity delete actions.

What's new?

• A new route, /media/delete_with_files, which acts as a confirmation form for bulk deleting media with associated files and translations. This route doesn't accept parameters; rather, it relies on the media_and_file_delete_confirm temporary storage for the current user to know what was checked off.
• A new confirm form is what actually runs the bulk delete of media, associated files, and media translations.

How should this be tested?

With Islandora enabled:

• Create at least two media, with attached files.
• Go to /admin/content/media/
• From the bulk operations drop-down, select 'Delete media and file(s)'
• Check off your new media
• Click 'Apply to selected items'
• You should be brought to a confirmation form that asks you whether you want to delete the selected media and associated files
• Click 'Delete'
• Check that the media and associated files have been deleted, along with any translations.

Additional Notes:

This represents something of a departure from the existing action in that the execute() action no longer immediately deletes the given entities. This doesn't appear to be run anywhere programmatically in the codebase, but it's worth mentioning in case someone somewhere is trying to run this programmatically.

Interested parties

@Islandora/8-x-committers

[mjordan]

Works as advertised. Thanks!

[ajstanley]

Does what it says on the tin.