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| malthe | I get the following exception in a functional test; in a real application it runs fine: "InvalidObjectReference: Attempt to store a reference to an object from a separate connection to the same database or multidatabase" | 00:34 |
|---|---|---|
| malthe | It occurs when I annotate an ``ore.workflow`` persistent workflow that is made up from transitions defined on a module-level. | 00:37 |
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| malthe | So the issue is really that I'm creating a persistent object that gets a different connection to the ZODB. | 00:45 |
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| malthe | Okay it seems to have to do with persistent utilities as instantiated by getUtility. | 01:12 |
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| pyqwer | Morning! | 11:48 |
| pyqwer | Does someone know how to reach through informations from the Auth/Credentials Plugins to my Login form? | 11:48 |
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| pyqwer | I can successfully authenticate, but I for instance don't know how to check in my login form why my authentication failed (no cookies enabled, wrong login, wrong password) etc. | 11:49 |
| pyqwer | And I need to communicate this info to the user. | 11:49 |
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| pyqwer | afd_: Hi, if I remember right, you also recently implemented some authentication, right? | 18:50 |
| afd_ | not recently, but maybe I can help you | 18:51 |
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| afd_ | I've debuged code of auth related stuff | 18:51 |
| pyqwer | Oh, that would be great. The authentication is currently working very well, but I don't know how to pass through information to my login form. | 18:51 |
| pyqwer | For instance, passing why a login failed (no such user, wrong pass etc.) | 18:52 |
| pyqwer | In my login form, the authentication has already be done and I know nothing about it. | 18:52 |
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| afd_ | pyqwer: thinking | 18:53 |
| pyqwer | I could perhaps put some information in the thread, I assume. But I'm unsure if this is nice. | 18:53 |
| afd_ | most of the times the purpose of the login form is just to serve as a place where to put info for the request | 18:54 |
| afd_ | then the credential plugin takes this info | 18:54 |
| pyqwer | exactly. | 18:54 |
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| pyqwer | currently, I "recheck" the password in the action handler of my form, but this is quite silly. | 18:55 |
| afd_ | have you written your own authentication and credential plugins? | 18:56 |
| pyqwer | My own authentication, yes, credential not yet, but that should not be too hard. | 18:57 |
| pyqwer | Moreover, there's a similar problem in the credentials, too. | 18:57 |
| pyqwer | If the browser does not support cookies, the credential plugin will (hopefully) notice this and redirect the user to a specific page. | 18:57 |
| afd_ | can't you throw some meaningful error on authenticateCredentials? and display that error in an error page... | 18:58 |
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| pyqwer | afd_: Hmmm, but who would catch this error? | 18:58 |
| pyqwer | A generic error page? Hmmm. | 18:59 |
| afd_ | pyqwer: either register a generic page for all exceptions, which would show the errors | 18:59 |
| afd_ | or throw specific errors, and register pages just for them | 18:59 |
| pyqwer | So, it's quite common to have a login page that displays "Wrong user/password combination" in case the user entered a wrong login. | 18:59 |
| pyqwer | Hmmm, quite complicated - perhaps it's easier then to put the information in the local thread then? | 19:00 |
| afd_ | you mean, annotate the request? | 19:01 |
| afd_ | pyqwer: it's not that hard, though, your use case, to display "wrong username/password" | 19:01 |
| pyqwer | No, if I understand it right, you can do something like "from thread import local". And then you can just write "local.auth_error=blabla". | 19:01 |
| pyqwer | And in my form, I once again import local and access the information. | 19:02 |
| afd_ | check for the auth input (which should be in the request), check if the request.principal.id is different from zope.anybody | 19:02 |
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| pyqwer | Yes, that's one option I also already use, I check if the request provides IUnauthenticatedPrincipal. | 19:02 |
| pyqwer | This tells me if the authentication succeeded but not why it did not. | 19:03 |
| afd_ | like, for example, missing cookies support? | 19:03 |
| pyqwer | Yes, for instance. | 19:03 |
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| pyqwer | Or "no such user" | 19:04 |
| pyqwer | (which is different from a wrong password) | 19:04 |
| afd_ | maybe you can get away with just 'wrong username/password' | 19:04 |
| pyqwer | Hmmm, unfortunately not, there's a lot more info. | 19:04 |
| afd_ | I think plone, for instance, has some js code to check cookies support | 19:04 |
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| pyqwer | For instance, in my system it's possible to lock out users (in case they did something nasty). | 19:05 |
| afd_ | I see | 19:05 |
| pyqwer | So, I don't only check the password but also a flag "locked" on the user. | 19:05 |
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| afd_ | shouldn't be too hard to implement those error pages, though | 19:05 |
| pyqwer | And what I'd like to do is to redirect the user to another page in case he is locked. | 19:05 |
| pyqwer | Same thing for an unconfirmed user. | 19:05 |
| pyqwer | I assume, in the authentication utility, I can't redirect, right? | 19:06 |
| afd_ | if you have access to the request, maybe | 19:07 |
| afd_ | but I don't see it used in the zope equivalent stuff | 19:07 |
| pyqwer | Hmmm, I'll check that. | 19:07 |
| afd_ | pyqwer: http://svn.zope.org/*checkout*/z3c.layer.pagelet/trunk/src/z3c/layer/pagelet/zope.app.http.exception.zcml | 19:08 |
| afd_ | it's not that hard to write your custom exception page.. | 19:08 |
| pyqwer | Ah, I see, so all I do is to register a view for a custom error? | 19:09 |
| afd_ | yes | 19:09 |
| pyqwer | Yes, that's an option. | 19:09 |
| pyqwer | And then, I have another (very silly) thing: My Login form has an "OK" and "Cancel" button. | 19:09 |
| pyqwer | You probably know what happens if the user inputs the right credentials and then presses "Cancel" ;-) | 19:10 |
| afd_ | is this a formlib generated form? | 19:11 |
| pyqwer | No, z3c.form. | 19:11 |
| afd_ | maybe in the cancel action handler you clear a cookie | 19:12 |
| afd_ | or... why don't you make the Cancel button be a reset button? | 19:12 |
| pyqwer | Well, yes that's what I also thought. I could also call the logout() function of my Credential plugin. | 19:12 |
| afd_ | or you need it to redirect to a different page with it? | 19:13 |
| pyqwer | The cancel button should also redirect ,right. | 19:13 |
| pyqwer | I use Zope3 for a mobile app, so I need this navigation as there are no menus. | 19:13 |
| afd_ | I see | 19:13 |
| pyqwer | I also thought about writing my own SessionCredentials plugin and check if theres button.cancel in the request. | 19:14 |
| pyqwer | I probably have to write my own credential anyway for the cookie checking. | 19:14 |
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| afd_ | I'd call credential_plugin.logout() in the action handler | 19:14 |
| pyqwer | Yes, that's *maybe* an option. | 19:15 |
| pyqwer | But there could be problems with the automatic redirection of the logout function. | 19:15 |
| afd_ | http://svn.zope.org/z3c.authentication/trunk/src/z3c/authentication/cookie/ | 19:15 |
| pyqwer | If my context is not accessible, it redirects me back to my login page. | 19:16 |
| afd_ | logout can just erase some cookies, then redirect to a page. It doesn't have to enter circular redirection, if that's what you're afraid of | 19:17 |
| pyqwer | Ok. | 19:18 |
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| pyqwer | afd_: Ok, thanks a lot! I'll quit for today and put these idea into action tomorrow! | 19:21 |
| afd_ | np | 19:21 |
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