Django: how to filter by day/month range without setting the year

I have a course Model but want to add an available period date (optiona) on it, but without concidering the Year.

so I can:

  • store 2 dates and wont concidering the years on the Course model
  • or store 4 numbers (from_day, from_month, to_day, to_month) on the Course model

First I don't know what is the best solutions (what type of data to store, date or numbers?) Second, I don't know how to filter later with checking the actual date.

If there is a date range in the courses, ex: 2022/12/20 to 2023/01/10, if we are the 2023/01/18, theses courses should be excluded

import datetime
today = datetime.date.today()

def get_available_courses(self):
    courses = self.account.get_courses().filter(
        ...
    )

No need to set a year because it should concider any year

When you have a datetime or date object, you can filter using the __month and __day options.

Like so:

course1 = Course(
    name='Course 1',
    start_date='2022-09-01',
    end_date='2022-12-31'
)

course2 = Course(
    name='Course 2',
    start_date='2021-09-01',
    end_date='2021-12-31'
)


courses = Course.objects.all()

# below will return both course1 and course2, because the year is not checked.
courses.filter(
    start_date__day=1
    start_date__month=9,
    end_date__day=31,
    end_date__month=12
)

Another option, as you mentioned, would be to save the day and month in your database, without a year.

course1 = Course(
    name='Course 1',
    start_day=1,
    start_month=9,
    end_day=31,
    end_month=12
)

course2 = Course(
    name='Course 2',
    start_day=1,
    start_month=9,
    end_day=31,
    end_month=12
)

today = datetime.date.today()

courses = Course.objects.all()

# below will return both course1 and course2
courses.filter(
    start_day=1,
    start_month=9,
    end_day=31,
    end_month=12
)
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