Le 2011-03-21 à 10:47, Andrew Kinnie a écrit :

> Yeah I saw that documentation page, and the presentation.  I could just swear 
> I saw previously an overview of how this works, what it does, and why it does 
> what it does what it does.  I need a 30,000 ft (10,000 meter?) view.  In the 
> mean time, passing the parameters seems straightforward enough with your 
> explanation I'll work on it from that perspective.
> 
> Not sure if I can make WOWODC this year, unfortunately.  Maybe, assuming I 
> don't go to WWDC.

If it helps, as of today we have 3 sessions about ERRest, including one talking 
about iOS too.

> Thanks.  This gives me a better start.
> 
> Andrew
> 
> On Mar 21, 2011, at 10:31 AM, Pascal Robert wrote:
> 
>> 
>> Le 2011-03-21 à 10:16, Andrew Kinnie a écrit :
>> 
>>> I am attempting to use ERRest as an interface for a push notification 
>>> server for our iOS apps, and am having some difficulties, partly related to 
>>> never having used Rails or Rest to begin with.  I am looking to have the 
>>> server receive json files for the notifications from the web side of our 
>>> company, and then process them, sending appropriate notifications back to 
>>> the Apple APN server for each device.  Also it needs to be able to receive 
>>> json requests from the devices themselves when they install the app and 
>>> turn on notifications.  So it seemed to me that ERRest would be a good 
>>> option for a WO app which takes JSON and (through Javapns google code 
>>> project) sends Apple what Apple needs to send the notifications.
>>> 
>>> I watched Mike's screencast for a WO-NoVA from last year, and I think I 
>>> understand some of the basics.  Is there an ERRest tutorial some place?  
>> 
>> http://wiki.objectstyle.org/confluence/display/WONDER/ERRest+Framework
>> 
>> The presentation from Mike at WOWODC West 2009 and mine from WOWODC 2010 
>> should have a lot of the stuff you need. And WOWODC 2011 will have a couple 
>> of presentations with ERRest stuff in it :-)
>> 
>> And have a look at the ERRestRouteExample and Movies examples from Project 
>> Wonder.
>> 
>>> I seem to remember there was a good overview in the Wonder docs someplace, 
>>> but do not seem to be able to find it now.
>>> 
>>> Basically, I created a couple subclasses of ERXDefaultRouteController for 
>>> each of a couple entities, and have added a bunch of rest related stuff 
>>> into the Application constructor.  I'm not, however, very clear on what I 
>>> need to do to have these requests to the server provide me with data as 
>>> parameters to the requests.  I gather that if I have a Register action in 
>>> my device controller, the devices could call a url like 
>>> http://myurl/ra/Device/Register but I am just fundamentally missing 
>>> something about how parameters would work.
>> 
>> When you send data to the REST service, you don't post parameters, you post 
>> data in the body of the request. That data can be JSON or any other format 
>> that ERRest support. So for example, with CURL, you do something like this 
>> to create a new Device object:
>> 
>> curl -X POST -d "{ 'type': 'Device', 'attribute1': 'value1', 'attribute2': 
>> 'value2' }" http://myurl/ra/Device
>> 
>> Don't forget that REST use HTTP verbs, so a GET is to fetch data, POST to 
>> create new data (new instances of entities), PUT is to update data and 
>> DELETE. You shouldn't need to use arguments in the URLs for POST/DELETE/PUT 
>> operations, unless you need to pass a API key or something like that.
>> 
>> And in your route controller, you use routeObjectForKey(), that method will 
>> find the data send by clients and convert to an EO. 
>> 
>>> I gather there is an @PathParam("myparametername") MyParemeterClass 
>>> myLocalInstanceOfThatClass) but I'm not sure if this is the way this should 
>>> do it, or if there are alternatives.  I'm also not exactly sure how this 
>>> works.
>>> 
>>> So I guess my fundamental question is where can I find anything close to a 
>>> tutorial or overview of ERRest?  (I have looked at the ERRestRouteExample 
>>> example app)
>>> 
>>> Thanks in advance
>>> 
>>> Andrew
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