renaming renditions during migration

if rendition names differ between source and target

Via /inspect/migration

This is available in fylr from version 6.33.0.

The Restore form on /inspect/migration/ exposes a Rename Versions table with three columns:

File class	Source version	Target version
image	preview	640px
video	1920p	1080p
image	thumbnail	(empty)

• one row per rename mapping; the table auto-grows a new empty row as soon as the last one is filled

• leave Target version empty to remove the version on the target

• rows with an empty File class or empty Source version are ignored on submit

• when a backup is selected, the table is pre-populated from the restore parameters of the previous run for that backup

• on submit, the rows are serialized into the single rename-versions parameter (<cls>.<version>:<new version>, comma-separated) and passed to fylr restore --rename-versions

Via command line

fylr restore --help

      --rename-versions=,...        Rename versions before uploading. This affects
                                    uploaded rights as well as file versions.
                                    The versions need to be given in the notation
                                    "<cls>.<version>:<new version>", e.g.
                                    "image.preview:640px" would replace the "preview"
                                    version of image to "640px". If the "<new version>"
                                    is omitted, the version is removed.