tabbed DNC card, machine-numbered downloads, themed backup history

plugins/backups/models/backup.py

@@ -46,6 +46,11 @@ class BackupRevision(db.Model):
         index=True,
     )
 
+    # Read-only view of the owning asset, so a revision can name its own
+    # download <machinenumber>.reg. No cascade or backref: the asset side must
+    # not gain a dependency on this plugin (ADR-014 lean builds).
+    asset = db.relationship('Asset', lazy='joined', viewonly=True)
+
     backupkind = db.Column(db.String(50), nullable=False, index=True)
     storagebackend = db.Column(db.String(20), nullable=False, default='shopdb')
 
@@ -114,6 +119,9 @@ class BackupRevision(db.Model):
             'sharepath': self.sharepath,
             'sourcefilename': self.sourcefilename,
             'bytesize': self.bytesize,
+            # The machine number. Carried on the revision so the UI can name a
+            # download <machinenumber>.reg without a second round trip.
+            'assetnumber': self.asset.assetnumber if self.asset else None,
             'sourcehostname': self.sourcehostname,
             'collectedat': self.collectedat.isoformat() if self.collectedat else None,
             'createdat': self.createdat.isoformat() if self.createdat else None,