# Deprecated Moved to: https://github.com/saritasa-nest/usummit-pinax-models
Pinax is an open-source platform built on the Django Web Framework. It is an ecosystem of reusable Django apps, themes, and starter project templates. This collection can be found at http://pinaxproject.com.
This app was developed as part of the Pinax ecosystem but is just a Django app and can be used independently of other Pinax apps.
pinax-models provides support for logical deletes on models and in the Django admin.
This is a small and simple app that Patrick Altman wrote to get some reuse out of something he did in nearly every project and every model he created. It's too easy for good data to get deleted and it be unrecoverable. It's also too easy to fix this by overriding the model's delete() method and just flagging records as deleted and then leveraging Django's managers to override default behavior so that logically deleted items are not returned in querysets.
There are two exceptions to this rule, however, that are useful.
- In the admin it is nice to see everything with an indicator of whether or not it has been deleted, with the ability to filter down to just active records, (or deleted for that matter).
- It is a valid request when an item is fetched by its primary key value, that the object should return, even if it is marked as deleted.
On May 25, 2015, Patrick donated django-logicaldelete to Pinax and as part of
that process, pinax-models was born and the code incorporated into that
package. It remains just a Django app and can be quite independently of other
Pinax apps.
pip install pinax-models
Using the app is pretty simple:
- add pinax.models to your INSTALLED_APPS
- Inherit from
pinax.models.LogicalDeleteModelfor all models that you wish to share in this functionality. - Create and/or Register admins for each of these models using
pinax.models.LogicalDeleteModelAdmin
Logical deletes are handled by date stamping a column. Default name of this column
is date_removed, but it can be changed using LOGICAL_DELETE_FIELD setting.
LOGICAL_DELETE_FIELD- name of field with deletion datetime. Default:"date_removed"ACCESSIBLE_BY_PK- is deleted objects may be retrived usingModel.objects.get(**kwargs))and specifyingpkinModel.objects.filter
- Renamed to
pinax-modelsand base model renamed toLogicalDeleteModel
- Changed
everythingtoall_with_deletedon LogicalDeleteManager - LogicalDeleteManager moved from
logicaldelete.modelstologicaldelete.managers - Removed
deletedandeverythingquerysets fromlogicaldelete.models.Model
The pinax-models documentation is currently under construction. If you would like to help us write documentation, please join our Pinax Project Slack team and let us know! The Pinax documentation is available at http://pinaxproject.com/pinax/.
See this blog post http://blog.pinaxproject.com/2016/02/26/recap-february-pinax-hangout/ including a video, or our How to Contribute (http://pinaxproject.com/pinax/how_to_contribute/) section for an overview on how contributing to Pinax works. For concrete contribution ideas, please see our Ways to Contribute/What We Need Help With (http://pinaxproject.com/pinax/ways_to_contribute/) section.
In case of any questions we recommend you join our Pinax Slack team (http://slack.pinaxproject.com) and ping us there instead of creating an issue on GitHub. Creating issues on GitHub is of course also valid but we are usually able to help you faster if you ping us in Slack.
We also highly recommend reading our Open Source and Self-Care blog post (http://blog.pinaxproject.com/2016/01/19/open-source-and-self-care/).
In order to foster a kind, inclusive, and harassment-free community, the Pinax Project has a code of conduct, which can be found here http://pinaxproject.com/pinax/code_of_conduct/. We ask you to treat everyone as a smart human programmer that shares an interest in Python, Django, and Pinax with you.
For updates and news regarding the Pinax Project, please follow us on Twitter at @pinaxproject and check out our blog http://blog.pinaxproject.com.