dj-enum

Name	dj-enum JSON
Version	0.0.2 JSON
	download
home_page	https://github.com/themrinalsinha/dj_enum
Summary	A Django enum field
upload_time	2022-06-25 09:58:58
maintainer
docs_url	None
author	Mrinal Sinha
requires_python	>=3.6, <4
license
keywords	dj_enum
VCS
bugtrack_url
requirements	No requirements were recorded.
Travis-CI	No Travis.
coveralls test coverage	No coveralls.

            # dj_enum (alpha)

### Example
```python
from dj_enum import ActionEnum, ChoiceField

# models.py
class PaymentStatus(ActionEnum):
    NOT_STARTED = 'not_started'
    UNDER_PROCESS = 'under_process'
    FAILED = 'failed'
    SUCCESS = 'success'
    CANCELLED = 'cancelled'
    NOT_REQUIRED = 'not_required'

    __states__ = {
        NOT_STARTED: (),
        UNDER_PROCESS: (NOT_STARTED, FAILED),
        FAILED: (UNDER_PROCESS, ),
        SUCCESS: (UNDER_PROCESS, NOT_STARTED),
        CANCELLED: (NOT_STARTED, NOT_REQUIRED, FAILED, SUCCESS),
        NOT_REQUIRED: (NOT_STARTED, ),
    }

class Orders(models.Model):
    payment_status = ChoiceField(PaymentStatus, default=PaymentStatus.NOT_STARTED, max_length=64)
    created_on = models.DateTimeField(auto_now_add=True)
    ended_on = models.DateTimeField(null=True, blank=True)
```

```ipython
In [1]: from app.models import *

In [2]: order = Order.objects.create()

In [3]: order.payment_status
Out[3]: PaymentStatus.NOT_STARTED # default status

In [4]: order.payment_status = PaymentStatus.UNDER_PROCESS
In [4]: order.save() # will work as it is a valid state change

In [5]: order.payment_status = PaymentStatus.CANCELLED
InvalidStateChangeError: ['under_process -> cancelled is not a valid transition for PaymentStatus']
```

            

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