MeetParikh01

# defining  Custom Querysets methods for the manager
class  StudentQuerySet(QuerySet):
  def male(self):
    return self.filter(gender='male')

  def female(self):
    return self.filter(gender='female')

  def age_greater_or_equal_to(self, age):
    return self.filter(age__gte=age)

MeetParikh01

>>> Student.objects.get_males().get_students_age_less_or_equal(23)

Traceback (most recent call last):
  File "<console>", line 1, in <module>
AttributeError: 'QuerySet' object has no attribute 'get_students_age_less_or_equal'

MeetParikh01

>>> from student.models import Student

# Get the total number of students.
>>> student = Student.objects.get_total_students()  
>>> student  # 6 (ans according to the data in database)

# Get students with age less than or equal to the given age.
>>> student = Student.objects.get_students_age_less_or_equal(22)
>>> student  # returns students with age less than or equal to the given age 

MeetParikh01

from django.db.models import Manager, Q, Sum
from datetime import datetime


class StudentManager(Manager):
  def get_total_students(self):
      return self.all().count()
    
  def get_students_age_less_or_equal(self, age):
      return self.filter(age__lte=age)

MeetParikh01

from django.db import models
from .managers import StudentManager, MaleManager, FemaleManager, StudentModifyManager, StudentQuerySet
from django.core.validators import MaxValueValidator

SEMESTER = (
              ('sem1', 'sem1'),
              ('sem2', 'sem2'),
              ('sem3', 'sem3'),
              ('sem4', 'sem4'),
  )

MeetParikh01

from django.contrib.auth.models import User


user = User.objects.get(id=1)

MeetParikh01

; ================================
;  celery beat supervisor 
; ================================

; the name of your supervisord program
[program:voicechatproject_celery_beat]

; Set full path to celery program if using virtualenv
command=/home/er190622005/Botree/VoiceChat/chat_venv/bin/celery beat -A voicechatproject --loglevel=INFO

MeetParikh01

; ==================================
;  celery worker supervisor 
; ==================================

; the name of your supervisord program
[program:voicechatproject_celery_worker]

; Set full path to celery program if using virtualenv
command=/home/er190622005/Botree/VoiceChat/chat_venv/bin/celery worker -A voicechatproject --loglevel=INFO

MeetParikh01

from botocore.exceptions import ClientError
from celery import task
from message.models import *
from celery.schedules import crontab
from celery.task import periodic_task
from django.db.models import Q
import datetime,boto3
from django.conf import settings
from django.db import IntegrityError, transaction

MeetParikh01

BROKER_URL = 'redis://localhost:6379'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = 'Asia/Calcutta'