Re: How to Retrieve Session User?
Re: How to Retrieve Session User?
- Subject: Re: How to Retrieve Session User?
- From: Fred Shurtleff <email@hidden>
- Date: Wed, 04 Apr 2007 18:22:47 -0400
Chuck,
I would welcome your comments on my KVC usage.
I was actually surprised by Mike's statement re: KVC 'funnybusiness' as
I was led to believe from my readings that KVC was a very integral part
of WO. And the KVC concept seems very straight-forward to me - what can
be simpler than takeValueForKey( value, key)? Also this is the technique
I have learned from a number of tutorials.
But then I am unable to put/get a user into the session - so there must
be something I am missing. Actually I have tried so many ways to
retrieve the user, I now think I never got the user into the session to
begin with. :-)
Chuck Hill wrote:
Listen to Mike. I was just about to write and make the same complaint
of your code. Abusing KVC is NOT your friend.
Chuck
On Apr 4, 2007, at 1:45 PM, Mike Schrag wrote:
PERSONALLY, I'd stop all this KVC funnybusiness. It has its place
and it's really powerful, but you're making your life way obnoxious.
Let Java do its job and just call methods on things -- there are LOTS
of benefits of this. Define a proper user field on your Session
class and do setUser(..) and user() to retrieve it.
On Apr 4, 2007, at 4:40 PM, Fred Shurtleff wrote:
Mark - I understand where you are coming from, and did try your
suggestion. But I still am NOT getting a user EO instance (I get
null per the debugger).
Actually I checked the WO docs and both valueForKeyPath AND
valueForKey are valid methods of the Session class. Problem is what
is the correct syntax. The docs say object.valueForKey(string), and
your suggestion provided the object part (ie session()) (I also
tried your input + valueForKeyPath but Eclipse complained about 'no
such key = session')
So I still am at a loss on how to retrieve a user EO from the
session. :-(
But thanks for your help/input!
Mark Morris wrote:
Hi Fred,
On Apr 4, 2007, at 3:10 PM, Fred Shurtleff wrote:
Hello,
I have a basic question on how to access the logged in user for
later use in updates. After authenticating a user I enter him into
the session, but when I later try to retrieve this user in another
page, it fails(returns null).
So in my main page I record the user as follows:
if (_password.equals(password)) { EOEnterpriseObject
user =
EOUtilities.objectMatchingKeyAndValue(session().defaultEditingContext(),
"User", "name", username);
// set the
session.user
session().takeValueForKey(user, "user");
And on another page to add a new transaction which needs the user
relation attribute(as a foreign key):
EOEnterpriseObject user = (EOEnterpriseObject)
valueForKeyPath("session.user"); // user evals to null???
Try changing this to:
EOEnterpriseObject user =
(EOEnterpriseObject)session().valueForKey("user");
valueForKeyPath is useful, but I don't think it can do what you're
asking of it here.
purchase.addObjectToBothSidesOfRelationshipWithKey(user, "user");
The save fails because user is a required attribute. And I'm not
sure if I am not properly storing the user in the session, or not
properly retrieving the user from the session.
Can anyone see what I am doing wrong or suggest another approach?
TIA
Personally, I usually make currentUser an actual variable in
Session. (Private, with public accessor methods, of course! ;-)
Regards,
Mark
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