In this presentation i have covered the basics to integrate MongoDB in a Django Application. I have covered basics of Django, Mongo DB, Mongo Engine and an easy way to integrate it with Django

1. Web development with Django and MongoDB

2. What is Django
➢ A high level web framework for rapid development
➢ Free and Open Source
➢ It's written in and for Python
➢ Very useful default admin panel
➢ Form Handling
➢ Templates – It has it's own template engine
➢ Object Relational Mapping (ORM)
➢ Model-View-Template

3. Architecture

4. Model
class Person(models.Model):
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=30)

5. Forms
#Basic Form
class PersonForm(forms.Form):
first_name = forms.CharField(max_length=100)
last_name = forms.CharField(max_length=100)
#Model Forms
class PersonForm(forms.ModelForm):
class Meta:
model = Person

6. View
def person_by_firstname(request,first_name):
person = Person.objects.find(first_name = first_name)
return render_to_response('person.html', {'person' : person})

7. MongoDB
➢ Scalable High-performance Open Source, NoSQL
database
➢ Query without joins
➢ Stores data in document model
➢ Nested Queries
➢ Map/Reduce for Aggregation

8. What is Document Model

9. Document Model - Denormalized

10. Nested Queries
● db.user.find({contact : {phone : “xyz”}});
● db.user.find({contact : {email :
“xyz@example.com”}});

11. Comparison with RDBMS
RDBMS(MySql, Postgres) MongoDB
Tables Collections
Records/Rows Documents/Objects
Queries Return Record Queries Return Cursor

12. Django with Mongo
● At the core of Django is it's ORM
Mongo Engine
● An ORM written in Python for MongoDB
● Say bye to Migrations.
● It's similar to Django ORM
● pip install mongoengine

13. Mongo Engine Model

14. Collecting things in View

15. Connecting to Database

16. MongoEngine is good
● Constantly maintained
● Works like Django ORM
● A replaceable component in Django

17. Any Alternative? - Yes
Django-nonrel
● Not maintained anymore
● Available for old django versions(maybe 1.4 or
1.5)

18. When should you use MongoDB
● You are starting a project with design freedom
● Your application has a lot of Geo-location data
● You have a high-volume traffic
● You want auto-sharding

19. Thank You