go-rule | Experimental rule engine | Rule Engine library
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kandi X-RAY | go-rule Summary
Experimental rule engine
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QUESTION
I am trying to create a first implementation with django-rules, following the guidelines in the README.
To start with some basic concepts, I want to restrict deletion of a record to the record owner onlyin my app contact
. I managed (it seems) to get things working with my API provided via Django REST Framework. However, when I open Django Admin with a non-superuser user, I get the following error:
AttributeError: 'NoneType' object has no attribute 'created_by'
This appears to be related to my predicate definition in contact/rules.py
(I tried to follow the "book example" in the django-rules documentation here):
ANSWER
Answered 2021-Jan-15 at 17:13So after adding some logging, I found out that my predicate function appears to be executed on every request, even when only the view permission should be checked. The error was observed on the admin login page, where no object for which I wanted to check the created_by
property was in the context yet.
This leads to another question: why is the predicate checked on every request? -> new post
QUESTION
Stupid question but when using django-rules for usage in RulesModel
, where to I put my custom predicates? Do I create a separate rules file and import it into models.py?
ANSWER
Answered 2020-Apr-21 at 08:01From docs https://github.com/dfunckt/django-rules/blob/master/README.rst#custom-rule-sets. You can create rules.py files in your applications and auto load them
QUESTION
Considering the following model
...ANSWER
Answered 2020-Apr-21 at 07:49If you want to auto apply permissions defined in your model you can use
in your course model something like this
QUESTION
Disclaimer: I'm new to django and django-rules.
I have defined my model. The Model has 2 foreign keys to the user table. Creator and supervisor. Instances should be changeable/updated by staff, creator or supervisor.
I have defined predicates for is_creator and is_supervisor and made a rule:
...ANSWER
Answered 2020-Apr-03 at 05:49There are two issues going on. First RTFM and do it correctly:
In my template I used has_perm entity_name.add_entity_name
instead of using as properly described in the documentation has_perm myapp.add_entity_name
.
After fixing that the predicates now actually got called and I could debug them. And there a bigger problem revealed itself. I was able to fix it but don't like the fix.
The predicate:
QUESTION
I'm trying to install django-rules by using
...ANSWER
Answered 2019-Sep-30 at 11:46Let's see: https://pypi.org/project/django-rules/
Version 0.2 last released at Jun 7, 2011.
Seems to be abandoned Python2-only project. Forget about it or fork it and update to Python 3 yourself.
QUESTION
Each restaurant can have multiple managers.
...ANSWER
Answered 2017-Oct-15 at 12:50I was playing around with django-rules to see if it suits the needs of a project and run into the issue you added on django-rules.
After adding a pdb trace in the tests and going through your settings I noticed the following:
The second link is an assignment, overriding authentication backend set in the previous assignments.
By adding the 'rules.permissions.ObjectPermissionBackend'
to the second set of backends, the tests pass without error.
I made a pull request on github to solve this issue: https://github.com/tavolia/Tavolia/pull/5
Cheers!
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