django_partial_date

Django custom model field for partial dates with the form YYYY, YYYY-MM, YYYY-MM-DD

• Works with DRF
• Supports comparison operations
• Supports Django 2.0 and Django 3.0

Usage

install the package

pip install django_partial_date

partial_date.PartialDateField

A django model field for storing partial dates. Accepts None, a partial_date.PartialDate object, or a formatted string such as YYYY, YYYY-MM, YYYY-MM-DD. In the database it saves the date in a column of type DateTimeField and uses the seconds to save the level of precision.

class partial_date.PartialDate

Object to represent the partial dates.

Example

models.py

from django.db import models
from partial_date import PartialDateField

class TestModel(models.Model):
    some_partial_date = PartialDateField()

>>> from partial_date import PartialDate
>>> from core.models import TestModel
>>> obj = TestModel(some_partial_date="1995")
>>> obj.save()
>>> obj.some_partial_date
'1995'
>>> obj.some_partial_date = PartialDate("1995-09")
>>> obj.save()
>>> obj.some_partial_date
1995-09
>>>

>>> from partial_date import PartialDate
>>> import datetime
>>> partial_date_instance = PartialDate(datetime.date(2012, 9, 21), precision=PartialDate.DAY)
>>> partial_date_instance
2012-09-21
>>> partial_date_instance.precisionYear()
False
>>> partial_date_instance.precisionMonth()
False
>>> partial_date_instance.precisionDay()
True
>>> partial_date_instance.precision == PartialDate.YEAR
False
>>> partial_date_instance.precision == PartialDate.MONTH
False
>>> partial_date_instance.precision == PartialDate.DAY
True
>>> partial_date_instance.precision = PartialDate.MONTH
>>> partial_date_instance
2012-09
>>> partial_date_instance = PartialDate("2015-11-01")
>>> partial_date_instance.date
datetime.date(2015, 11, 1)

>>> from partial_date import PartialDate
>>> partial_date_instance = PartialDate("2015-11-01")
>>> partial_date_instance
2015-11-01
>>> partial_date_instance.format('%Y', '%m/%Y', '%m/%d/%Y') # .format(precision_year, precision_month, precision_day)
'11/01/2015'
>>> partial_date_instance = PartialDate("2015-11")
>>> partial_date_instance
2015-11
>>> partial_date_instance.format('%Y', '%m/%Y', '%m/%d/%Y')
'11/2015'
>>> partial_date_instance = PartialDate("2015")
>>> partial_date_instance
2015
>>> partial_date_instance.format('%Y', '%m/%Y', '%m/%d/%Y')
'2015'

Thanks for their collaborations to

• lorinkoz
• howieweiner
• jghyllebert