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Project Description

Provides an enumeration Django model field (using IntegerField) with reusable enums and transition validation.

Installation

Currently, we test Django versions 1.6-1.8 and Python versions 2.7,3.3-3.5.

Install django-enumfield in your Python environment:

$ pip install django-enumfield

For testing with Django 1.9rc1, use

$ pip install --pre django-enumfield==1.3b2

If you are looking for native enum (or enum34) support, try testing Pull Request #26 which is planned for Django 1.10+.

Usage

Create an Enum-class and pass it as first argument to the Django model EnumField.

from django.db import models
from django_enumfield import enum

class BeerStyle(enum.Enum):
    LAGER = 0
    STOUT = 1
    WEISSBIER = 2

class Beer(models.Model):
    style = enum.EnumField(BeerStyle, default=BeerStyle.LAGER)
Beer.objects.create(style=BeerStyle.STOUT)
Beer.objects.filter(style=BeerStyle.STOUT)

You can use your own labels for Enum items

class Animals(enum.Enum):
    CAT = 1
    DOG = 2

    labels = {
        CAT: 'Cat',
        DOG: 'Dog'
    }

The Enum-class provides the possibility to use transition validation.

from django.db import models
from django_enumfield import enum

class PersonStatus(enum.Enum):
    ALIVE = 1
    DEAD = 2
    REANIMATED = 3

    _transitions = {
        DEAD: (ALIVE,),
        REANIMATED: (DEAD,)
    }

class Person(models.Model):
    status = enum.EnumField(PersonStatus)

These transitions state that a PersonStatus can only go to DEAD from ALIVE and to REANIMATED from DEAD.

person = Person.objects.create(status=PersonStatus.ALIVE)
try:
    person.status = PersonStatus.REANIMATED
    person.save()
except InvalidStatusOperationError:
    print "Person status can not go from ALIVE to REANIMATED"

The Enum-class can also be used without the EnumField. This is very useful in Django form ChoiceFields.

from django.forms import Form
from django_enumfield import enum

class GenderEnum(enum.Enum):
    MALE = 1
    FEMALE = 2

    labels = {
        MALE: 'Male',
        FEMALE: 'Female',
    }

class PersonForm(forms.Form)
    gender = forms.TypedChoiceField(choices=GenderEnum.choices(), coerce=int)

Rendering PersonForm in a template will generate a select-box with “Male” and “Female” as option labels for the gender field.

Release History

Release History

1.3b2

This version

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1.3b1

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1.2.1

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1.2

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1.1.2

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1.1.1

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1.1

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1.0.1

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1.0

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1.0c1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django_enumfield-1.3b2-py2.py3-none-any.whl (42.9 kB) Copy SHA256 Checksum SHA256 3.5 Wheel Nov 17, 2015
django-enumfield-1.3b2.tar.gz (10.6 kB) Copy SHA256 Checksum SHA256 Source Nov 17, 2015

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