Some data may require an approval before it is added to the database. The django-approvals apps is intended to provide a light-weight way of adding approvals to your app.
There is one table where all approvals exist for all models, through django's contenttype framework it's possible to differentiate an approval that belongs to one model from an approval that belongs to another model.
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Create a model that is approvable. In this case we want the wheels to be approvable.
from django.db import models
from django_approval.models import ApprovableModelMixin
class Car(models.Model):
field1 = models.CharField(max_length=16)
class Wheel(models.Model, ApprovableModelMixin):
type = models.CharField(max_length=16)
car = models.ForeignKey(Car, on_delete=models.CASCADE)To trigger an approval use the approval form. It inherits from ModelForm, and when saved instead of saving an instance of a Wheel, it would save an instance of an Approval.
The form optionally takes a request parameter which is used to determine an author of the change.
from django_approval.form import FormUsingApproval
class WheelModelForm(FormUsingApproval):
class Meta:
model = Wheel
fields = '__all__'An approval admin is automatically registered. All approvals for all models will be visible there. You can also add an approval inline admin if there is a foreign key relationship similar to Car and Wheel above.
All Wheel approvals that can be traced to have an association with a particular Car will be presented in one section for an overview. Here approvals can be made.
from django_approval.admin import ParentApprovalAdmin,
from django_approval.admin import ApprovalTabularInline
class WheelApprovalAdmin(ApprovalTabularInline):
approval_for = Wheel
@admin.register(models.Parent)
class CarAdmin(ParentApprovalAdmin):
inlines = [
WheelApprovalAdmin
]Install Django approval (not yet on pypi):
pip install django-approvalAdd it to your `INSTALLED_APPS`:
INSTALLED_APPS = (
...
'django_approval',
...
)Does the code actually work?
source <YOURVIRTUALENV>/bin/activate
(myenv) $ pip install tox
(myenv) $ tox