Duncan Mac-Vicar Prett write:
After playing some days with forms and the users module in order to achieve the following goals:
- autocompletion of form data - examples for fields - browser side validation
I want to share some results of those experiments and how they affect our design
The first limitation I found is mostly likely present in various models.
Users.find(:all) returns less data than Users.find(id), only the username and something else. If you want to autocomplete/suggest all known login shells ( something like Users.find(:all).map { |x| x.login_shell } ) you need a way on the client side to get all login shells. I ended modifying the /users service to - accept ?attributes[]=attr1&attributes[]=attr2... so that the caller could chose which attributes to insert - be sure that it was able to return json
Once you have that, doing autocompletion is trivial, but very repeat-yourself prone. Biggest problem is that you can't call from the browser the rest- service unless:
- you set the url of the resource in the view - you use JSON-P, using $.getJSON and setting a jsonp callback ( http://en.wikipedia.org/wiki/JSON#JSONP )
Or you can create an action in the controller which calls the service and returns the result. I can't get the jsonp call to actually process the data.
Then you need to set the right autocomplete data in the javascript document.ready callback inlined in the view (at least until we solve the problem I mentioned in opensuse-ruby mailing list ), by using jquery.autocomplete calls on the right form fields, giving the autocomplete data you got from the service or the controller action
We can avoid duplication of Javascript by emulating what rails implements with protoype, so that you specify the autocompletions in the model class. For that we would need to swtich from find_proxy to a real User class using the class Martin Kudlvasr and Martin Vidner where working on. Once you have a model we could use something like:
http://github.com/grosser/simple_auto_complete
combined with the jquery.autocomplete plugin to achieve a more or less standard to apply validation to our forms.
Any ideas?
I think, that you can use for calling rest-service AJAX call. See my email http://lists.opensuse.org/yast-devel/2009-05/msg00026.html hot to do it. AJAX have advantage, that it doesn't block user if it take too much time. Josef -- Josef Reidinger YaST team maintainer of perl-Bootloader, YaST2-Repair, webyast (language,time,basesystem,ntp) -- To unsubscribe, e-mail: yast-devel+unsubscribe@opensuse.org For additional commands, e-mail: yast-devel+help@opensuse.org