django orm group by month and year
To group Django ORM queryset by month and year, you can follow these steps:
Step 1: Import the necessary modules Make sure to import the required modules for working with Django ORM and date-related operations:
from django.db.models.functions import ExtractMonth, ExtractYear
from django.db.models import Count
Step 2: Perform the grouping
To group the queryset by month and year, you can use the annotate()
function along with the ExtractMonth
and ExtractYear
functions. Here's an example:
queryset = YourModel.objects.annotate(
month=ExtractMonth('date_field'),
year=ExtractYear('date_field')
).values('month', 'year').annotate(count=Count('id'))
In the above code, replace YourModel
with the name of your Django model, and date_field
with the name of the field you want to group by.
Step 3: Access the grouped data The grouped data will be returned as a queryset, which you can iterate over or access the values as needed. For example, you can print the month, year, and count for each group:
for data in queryset:
month = data['month']
year = data['year']
count = data['count']
print(f"Month: {month}, Year: {year}, Count: {count}")
This will print the month, year, and count for each group in the queryset.
By following these steps, you can group a Django ORM queryset by month and year.