send_weekly_assigment_celery_task.py

from django.contrib import messages
from django.core.mail import EmailMultiAlternatives
from django.shortcuts import redirect
from django.template.loader import render_to_string

from gradebook import celery_app
from mygrades.models import Student, StudentAssignment


@celery_app.task
def send_weekly_assigments_task(email):
    student = Student.objects.filter(teacher_email=email)

    for student in student:
        assignments = StudentAssignment.objects.filter(student=student, status='Assigned') #, shown_in_weekly=True)

        data = []
        for asm in assignments:
            standards = ",".join(asm.assignment.standard.all().values_list("standard_code",flat=True))
            if standards == "":
                standards = "-"
                data.append({'title':asm.assignment.name, 'detail':asm.assignment.description, 'curriculum':asm.assignment.curriculum.name, 'cur_pk':asm.assignment.curriculum.pk, 'standards': standards})

                subject, from_email, to = "%s's Assignments for This Week" % student.get_full_name(), '[email protected]', [
                    email]
                text_content = 'A weekly assignment list is included. You may need to open this in a different browser if you do not see it here. '
                html_content = render_to_string('mail_weekly_assignments.html', context={'assignments':data, 'student':student})
                msg = EmailMultiAlternatives(subject, text_content, from_email, to)
                msg.attach_alternative(html_content, "text/html")
                msg.send()

def send_all_students_weekly_assignments(request):
    send_weekly_assigments_task.delay(request.user.email)
    messages.success(request, "Weekly assignments for all of your students were sent to your email!")
    return redirect("/")