django-trufflehog 0.3.0

Keep track of creation, update and deletion of models

Keep track of creation, update and hiding of models

Installation

This was developed using:

• Django 1.7

• Python 3.4

I cannot guarantee it will work for anything older than that, but it probably works for later versions.

Install the latest official release using pip:

pip install django-trufflehog

You can install the latest development version using pip:

pip install git+git://github.com/jleeothon/trufflehog/

Usage

Warning. Until release of version 1.0, API is bound to change.

Models

There are two Model subclasses that you can mix into your models: DateTraceable and Hideable. The former adds two datetime fields to the model: created and updated.

To include either or both in a model, mix-in these classes like this:

# models.py

from django.db import models
from django.db.models import Model
from trufflehog, import DateTracreable, Hideable

class HappyHog(DateTraceable, Hideable, Model):
    name = models.CharField(max_length=100)
    happiness = models.IntegerField()

Given there exists happy_hog = HappyHog(name="Moccus"), check the datetime of creation and edition with happy_hog.created and happy_hog.updated.

When checking whether or not a model is hidden, happy_hog.hidden will return the datetime of deletion and can be used as a boolean test. If a boolean variable is strictly necessary, you could use happy_hog.is_hidden.

Managers

Add a manager to peek into only hidden or only visible model instances:

# models.py

import trufflehog

class HappyHog(DateTraceable, Hideable, Model):
    # some fields here

    hidden_objects = trufflehog.VisibilityManager(visible=False)
    visible_objects = trufflehog.VisibilityManager(visible=True)

But if you want to override the default objects manager:

objects = trufflehog.VisibilityManager(visible=True)

You can also create your own custom managers by mixing-in VisibilityManagerMixin:

# mymanagers.py

from django.db import models
import trufflehog.managers

class SuperHappyHogManager(trufflehog.managers.VisibilityManagerMixin, models.Manager):
    def get_queryset(self):
        """
        Only queries on hogs whose happiness is over 9000.
        """
        q = super(HappyHogManager, self).get_queryset()
        q = q.filter(happiness__gt=9000)
        return q

Thanks

Well, thanks. At least for reading this. Also, if you file an issue or contribute to this repository, have my thanks beforehand. Any good or bad ideas or comments are appreciated.