Getting top 3 most enrolled course by students - django

Question

I am building a website where an instructor can create courses and students can enroll the courses. Is there any way to display top 3 most enrolled courses by students that an instructor has created?
I have tried using .values().annotate().order_by()[] but it seems that i cant display it on template.
models.py
class Enrollment(models.Model):
student = models.ForeignKey(User, on_delete=models.CASCADE)
course = models.ForeignKey(Course, on_delete=models.CASCADE)
enrollment_date = models.DateField(auto_now_add=True, null = True)
class Course(models.Model):
user = models.ForeignKey(Users, on_delete = models.CASCADE)
media = models.ImageField(upload_to = 'media/course')
title = models.CharField(max_length=300, null = False)
subtitle = models.CharField(max_length=500, null = False)
description = models.TextField(max_length=5000, null = False)
language = models.CharField(max_length=20, null = False, choices=LANGUAGE)
level = models.CharField(max_length=20, null = False, choices=LEVEL)
category = models.CharField(max_length=30, null = False, choices=CATEGORY)
subcategory = models.CharField(max_length=20, null = False)
price = models.FloatField(null = True)
roles_responsibilities = models.TextField(max_length=2500, null = False)
timeline_budget = models.TextField(max_length=250, null = False)
req_prerequisite = models.TextField(max_length=2500, null = False)
certificate = models.CharField(max_length=5, null = False, choices=CERTIFICATE)
slug = AutoSlugField(populate_from='title', max_length=500, unique=True, null=True)
views.py
def instructorDashboard(request):
student = Enrollment.objects.filter(course__in=course)
popular_courses= student.values('course__title').annotate(count=Count('course__title')).order_by('-count')[:3]
print(popular_courses)
context = {
'popular_courses': popular_courses,
}
return render(request, 'instructor_dashboard/index.html', context)
index.html
<!-- Popular Courses -->
<div class="col-xl-4 col-lg-5">
<div class="card shadow mb-4">
<!-- Card Header - Dropdown -->
<div class="card-header py-3 d-flex flex-row align-items-center justify-content-between">
<h6 class="m-0 font-weight-bold text-primary">Popular Courses</h6>
</div>
{% for popular_course in popular_courses %}
<div class="card-body">
{{ course.title }}
</div>
{% endfor %}
</div>
</div>

Answer 1

Expected: Get the list of courses having more enrollments.
In Django, if we are using ForeignKey, you can easily get all the rows(Enrollment) that are in a relationship with a single row(Course) using the 'realted_name' parameter.
models.py
class Enrollment(models.Model):
student = models.ForeignKey(User, on_delete=models.CASCADE)
course = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='enrollment')
enrollment_date = models.DateField(auto_now_add=True, null = True)
views.py
# Get the user object and filter the course that are created by user.
# Retrieve all the enrollments for every course created by user and sort in descending order.
# courses_list will be having all the courses that are created by the user.
courses_ranking = []
for course in courses_list:
courses_ranking.append({'course_id': course.id, 'count':course.enrollment.count()})
# After this, courses_ranking will be having list of dict objects that contains courses_id and specific enrollment count. If you sort that dictionary based on the "count" key, you will get the required sorted list.
result = sorted(courses_ranking, key=lambda x: x[1], reverse=True)
# result will have list of courses with highest to lowest enrollments(descending order).