Upgrading from SabreDAV 2.0 to 2.1
sabre/dav 2.1 has a number of new features, and as usual, a number of backwards compatibility breaks.
This page lists them all.
- We finally have support for CalDAV scheduling, as defined in rfc6638. Among other things, this means that you can invite people on your sabredav server, and see attendance status automatically update. Many CalDAV clients support this, and will also now automatically provide "Accept" and "Decline" interfaces when new invites are sent. This also enables attendees on iOS for the first time. Read more about this in the scheduling documentation.
- Support for sending event invitations for every CalDAV client. See scheduling for more info.
- The ZIP now has a cleaner structure. Putting all the code in
lib, for consistency.
- We now support the jCard format everywhere, using HTTP content
negotiation, and also in CardDAV
- We also support vCard 4.0 everywhere! If you don't request a specific version, we will still return vCard 3.0 objects, but if you ask for vCard 4.0, we'll serve you that. Backends can store either vCard 3 or 4, and we will convert in between these formats as needed.
- Support for high-speed
MOVErequest could be very sluggish, because sabredav by default will traverse an entire directory tree, copy every node 1-by-1 and delete the source tree afterwards. When your tree is database or filesystem-backed, it's often possible to do a really fast
MOVE. By implementing
Sabre\DAV\IMoveTargetyou can now hook into this system and gain tremendous speed.
To read the full list of changes (there's quite a few!) read the changelogs:
API Changes and BC breaks
Database structure changes
If you use the default
PDO backend for CalDAV, you need to migrate to the
latest database structure.
Before you start the migration process, please make a backup first! No warranty is given for lost data.
To run the database upgrade, simply start
./bin/migrate21.php from the SabreDAV
project. This script will give you more information about its arguments.
CalDAV backends have a new method
Every CalDAV backend must now implement a new method:
getCalendarObjectByUID. If you are not using the default PDO backend, but
created a custom backend, you must add support for this new method.
If you extended
Sabre\CalDAV\Backend\AbstractBackend, a fallback method has
been provided. This method works, but it's very slow. For most backends it's
possible to optimize this quite a bit.
Note that this is mainly used for Scheduling support.
We have renamed a few classes:
Sabre\CalDAV\CalendarRootNodeis renamed to
Sabre\CalDAV\UserCalendarsis renamed to
The classes behave the same. The old classes still exist, but will be removed in sabre/dav 3.0. If you instantiated any of these classes, make sure you use the new names.
The iMipHandler has been removed
The imipHandler has been removed entirely. This class was used in the past to work around an iCal bug.
This bug no longer exists when a CalDAV server supports scheduling, so we've also removed the workaround.
A part of its functionality was to send out email invites. This functionality has been replaced by a new iMip plugin. The benefit of this plugin, is that it works for every caldav client, and not just broken iCal versions.
Support for free-busy reports has moved to a new plugin
sabre/dav supported a 'freebusy' report for a long time. This report was used by several clients, but was actually part of the scheduling specification.
Now we've fully implemented support for scheduling, and so we've also moved the freebusy functionality.
If you need it back, make sure you enable the scheduling plugin in your server:
Support for notifications has moved to a new plugin
If you wrote a CalDAV backend that supports notifications (for share invites and replies), you need to now explicitly turn on a plugin for this to work.
Before this was just part of the CalDAV plugin, but this meant that this extra functionality was enabled, and not used for most users.
If you need it back, make sure you enable the notifications plugin in your server:
vCards now return a different content-type.
When doing a
GET request on a vCard, we always returned the following header:
Content-Type: text/x-vcard; charset=utf-8
This was wrong. We've changed it to:
Content-Type: text/vcard; charset=utf-8
If you relied on the old behavior, make sure you update this.
Updating table names in PDO backends now work differently
A few people always found it important to use their own table names for the
various PDO backends, one major reason is that this would allow people to
prefix all their table names with for example
This was always done by allowing people to set the various database table names in the constructors of the various PDO backends.
This is now deprecated!
Instead you must now set the table names as public properties. The old way using arguments still works, but will be removed in version 3.0.
Affected PDO backends:
PropertyStorage classes now have a
If you implemented your own
Sabre\DAV\PropertyStorage\Backend class, you must
now implement the new
The propertystorage system allows a client to store any arbitrary property on any resource.
One problem with this system was that it didn't handle
correctly. If a
MOVE is done on a resource, any dead properties must
also be moved with it.
move method will be called when a HTTP
MOVE is done, and allows
you to re-assign all the properties to the new location.
Principal backends now have a
If you implemented your own
PrincipalBackend class, you must now implement
findByUri method as well.
This method takes some kind of URI, such as a
mailto: address, and returns
a local principal url.
This is used by CalDAV scheduling to deliver invites and replies to the right user inbox.
It's possible to just return
null from this method, but this will prevent
local invite delivery.
ObjectTree and Tree\FileSystem classes have been removed
Sabre\DAV\Tree\FileSystem classes both
This particular extension point was very rarely used. The main reason to
extend either of these classes, was to make
MOVE operations faster.
Since 2.1, both of these classes are removed. Functionality from
has been merged into
Sabre\DAV\Tree, which is no longer abstract.
Usually there is no need to instantiate this class directly, as it's also
Sabre\DAV\Server, but if you did use this extension point for
optimizing moves, we now recommend to implement
your Collection classes instead.
The sabre/http package has been upgraded to version 3.0. Several BC breaking changes have been made, specifically in how methods related to HTTP headers work.
If you ever used
you should make sure that it still works with the new behavior.
For more details, read the blogpost.
New ZIP structure
The zip distribution now has a new directory structure. Before a part of the
source was in the
lib/ directory, and another part in the
We've now combined everything in the
vendor/ directory. If you used the
composer autoloader (in
vendor/autoload.php) you don't have to change a
thing, but if you rolled your own autoloading mechanism, you may need to