Lists-with-play-scalate-gae is a project mainly written in JAVASCRIPT and SCALA, it's free.
A sample program for Play! Scalate with GAE
This sample app is just a translation of play-gae[1]'s lists-with-gae[2] in Scala with Scalate[3][4].
This sample app will work with play-1.1, but the scalate module is not ready for it. So, we will build its jar from its source code.
$ pwd /tmp $ wget http://download.playframework.org/releases/play-1.1.zip $ unzip play-1.1.zip $ export PLAY_PATH=/tmp/play-1.1 $ export PATH=$PLAY_PATH:$PATH $ play install scala $ play install gae $ play install siena
$ wget wget http://googleappengine.googlecode.com/files/appengine-java-sdk-1.3.7.zip $ unzip appengine-java-sdk-1.3.7.zip $ export GAE_PATH=/tmp/appengine-java-sdk-1.3.7
$ git clone git://github.com/ymnk/play-scalate.git scalate-ymnk-trunk $ (cd scalate-ymnk-trunk; ant -Dplay.path=$PLAY_PATH) $ mv scalate-ymnk-trunk $PLAY_PATH/modules/
$ git clone git://github.com/ymnk/lists-with-play-scalate-gae.git $ cd lists-with-play-scalate-gae $ vi war/WEB-INF/appengine-web.xml // set your GAE app-id into application tag. $ play gae:deploy
Refer to properties 'scalate.allowReload' and 'scalate.workdir' in war/WEB-INF/appengine-web.xml. These properties are mandatory to run Scalate on GAE.
This app is using siena[6] to manipulate the datastore. The original sample app has been using @Filter annotation, but it seems it will cause an exception on Scala. So that annotation is not used in this app. Refer to app/models/List.scala.
The original 'lists-with-gae' has a problem in deleting an item. It seems '/lists/deleteitem/?id=x&itemId=y' has been encoded as '/lists/deleteitem/?id=x&itemId=y' unexpectedly. To work around this problem, a following line has bee added to conf/routes
POST /lists/{<d+>id}/items/{<d+>itemId}/delete Lists.deleteItem
I don't know the reason, but on my configuration a mail notification functionality was not worked with original code. So I'm using GAE's mail APIs instead of Play!'s mailer APIs. Refer to app/notifiers/Notifier.scala
[1] http://www.playframework.org/modules/gae [2] http://github.com/guillaumebort/play-gae/tree/master/samples-and-tests/lists-with-gae/ [3] http://scalate.fusesource.org/ [4] http://www.playframework.org/modules/scalate [5] http://github.com/ymnk/play-scalate [6] http://www.playframework.org/modules/siena