group by django model

create django group

from django.contrib.auth.models import Group, Permission
from django.contrib.contenttypes.models import ContentType
from api.models import Project
new_group, created = Group.objects.get_or_create(name='new_group')
# Code to add permission to group ???
ct = ContentType.objects.get_for_model(Project)

# Now what - Say I want to add 'Can add project' permission to new_group?
permission = Permission.objects.create(codename='can_add_project',
                                   name='Can add project',
                                   content_type=ct)
new_group.permissions.add(permission)

Posted by: Guest on November-14-2020

Source

# If you mean to do aggregation you can use the aggregation features of the ORM: from django.db.models import Count Members.objects.values('designation').annotate(dcount=Count('designation')) # This results in a query similar to: SELECT designation, COUNT(designation) AS dcount FROM members GROUP BY designation #and the output would be of the form [{'designation': 'Salesman', 'dcount': 2}, {'designation': 'Manager', 'dcount': 2}]

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