DRF installation and setup in Django - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

What is the first step to install Django REST Framework (DRF)?

You want to start using Django REST Framework in your project. What is the correct first step?

A Create a new app named 'rest_framework' using manage.py

B Add 'rest_framework' to INSTALLED_APPS before installing the package

C Run the command: pip install djangorestframework

D Run the command: django-admin startproject rest_framework

💡 Hint

Think about how Python packages are added to your environment first.

The first step is to install the DRF package using pip. Only after installation can you add it to your Django settings.

❓ component_behavior

intermediate

What happens if you forget to add 'rest_framework' to INSTALLED_APPS?

After installing DRF, you forget to add 'rest_framework' to your Django settings INSTALLED_APPS. What will happen when you run your server?

A Your project will crash immediately on startup with a syntax error

B The server will run normally but DRF features will silently fail without errors

C Django will automatically add 'rest_framework' to INSTALLED_APPS for you

D Django will raise an error about missing 'rest_framework' app when you try to use DRF features

💡 Hint

Think about how Django knows which apps are active.

Django requires apps to be listed in INSTALLED_APPS to load their configurations. Missing 'rest_framework' causes errors when DRF features are used.

📝 Syntax

advanced

Which code snippet correctly adds DRF to INSTALLED_APPS in settings.py?

Select the correct way to add Django REST Framework to the INSTALLED_APPS list in your settings.py file.

Django

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    # other apps
    # Add DRF here
]

A 'rest_framework' in INSTALLED_APPS

B INSTALLED_APPS += ['rest_framework']

C INSTALLED_APPS.append('rest_framework')

D INSTALLED_APPS = 'rest_framework'

💡 Hint

Think about how to add an item to a Python list.

To add 'rest_framework' to INSTALLED_APPS, you can use list concatenation with += or add it directly in the list. Option B correctly adds it.

❓ state_output

advanced

What is the output when running 'python manage.py migrate' after installing DRF but before adding it to INSTALLED_APPS?

You installed DRF but forgot to add it to INSTALLED_APPS. You run 'python manage.py migrate'. What happens?

A Migrations run successfully without any DRF migrations applied

B You get an error saying 'No module named rest_framework' during migration

C Migrations fail with an error about missing 'rest_framework' app

D The command runs but creates empty migration files for DRF

💡 Hint

Think about what migrations Django applies based on INSTALLED_APPS.

Migrations only run for apps listed in INSTALLED_APPS. Since DRF is not listed, no DRF migrations run but others do.

🔧 Debug

expert

Why does this error occur: 'ModuleNotFoundError: No module named rest_framework'?

You run your Django project after adding 'rest_framework' to INSTALLED_APPS but get this error. What is the most likely cause?

A You forgot to install the djangorestframework package with pip

B You added 'rest_framework' to INSTALLED_APPS but misspelled it as 'restframework'

C Your Python version is too old to support DRF

D You need to restart the Django server after adding 'rest_framework'

💡 Hint

ModuleNotFoundError means Python cannot find the package in your environment.

This error means the DRF package is not installed in your Python environment. Adding it to INSTALLED_APPS alone is not enough.

Practice

1. What is the first step to add Django REST Framework (DRF) to your Django project?

easy

A. Include DRF URLs in urls.py

B. Add rest_framework to INSTALLED_APPS

C. Install DRF using pip install djangorestframework

D. Run python manage.py migrate

Solution

1. Step 1: Install DRF package

   You must first install the Django REST Framework package using pip to add API features.

2. Step 2: Prepare for configuration

   After installation, you can add it to your Django settings and URLs.

3. Final Answer:

   Install DRF using pip -> Option C

4. Quick Check:

   First step = Install DRF [OK]

Hint: Always install packages before configuring [OK]

Common Mistakes:

• Trying to add to INSTALLED_APPS before installing
• Skipping installation and expecting DRF to work
• Running migrations before installing DRF

2. Which line correctly adds Django REST Framework to your Django settings?

easy

A. 'rest_framework' in INSTALLED_APPS

B. 'rest_framework' in DATABASES

C. 'rest_framework' in TEMPLATES

D. 'rest_framework' in MIDDLEWARE

Solution

1. Step 1: Locate the correct settings list

   Django apps are added to the INSTALLED_APPS list in settings.py.

2. Step 2: Add DRF to INSTALLED_APPS

   Adding 'rest_framework' here enables Django to recognize DRF features.

3. Final Answer:

   'rest_framework' in INSTALLED_APPS -> Option A

4. Quick Check:

   DRF goes in INSTALLED_APPS [OK]

Hint: Apps go in INSTALLED_APPS, not middleware or databases [OK]

Common Mistakes:

• Adding DRF to MIDDLEWARE instead of INSTALLED_APPS
• Placing DRF in TEMPLATES or DATABASES sections
• Forgetting to add DRF to settings after installation

3. Given this urls.py snippet, what does it enable?

from django.urls import path, include

urlpatterns = [
    path('api-auth/', include('rest_framework.urls')),
]

medium

A. It registers all API views automatically

B. It adds API login and logout pages for DRF's browsable API

C. It disables Django admin interface

D. It sets up database migrations for DRF

Solution

1. Step 1: Understand the included URL

   The rest_framework.urls include login and logout views for the browsable API.

2. Step 2: Recognize the effect on API interface

   This enables users to log in and out when using the DRF web interface.

3. Final Answer:

   It adds API login and logout pages for DRF's browsable API -> Option B

4. Quick Check:

   Including rest_framework.urls = API login/logout [OK]

Hint: Including rest_framework.urls adds API login/logout pages [OK]

Common Mistakes:

• Thinking it registers API views automatically
• Confusing it with admin site URLs
• Assuming it runs migrations or database setup

4. You added rest_framework to INSTALLED_APPS but get an error: ModuleNotFoundError: No module named 'rest_framework'. What is the likely cause?

medium

A. You forgot to install DRF with pip

B. You added 'rest_framework' to MIDDLEWARE instead of INSTALLED_APPS

C. You did not include DRF URLs in urls.py

D. You need to run python manage.py migrate first

Solution

1. Step 1: Understand the error meaning

   ModuleNotFoundError means Python cannot find the DRF package installed.

2. Step 2: Check installation status

   This usually happens if you forgot to run pip install djangorestframework.

3. Final Answer:

   You forgot to install DRF with pip -> Option A

4. Quick Check:

   ModuleNotFoundError = Missing pip install [OK]

Hint: ModuleNotFoundError means package not installed [OK]

Common Mistakes:

• Assuming adding to INSTALLED_APPS installs the package
• Thinking missing URLs cause this error
• Running migrate does not fix missing package

5. You want to enable the browsable API login/logout pages and have installed DRF and added it to INSTALLED_APPS. Which is the correct way to update your project's urls.py to achieve this?

hard

A. Add path('api-auth/', include('rest_framework.authentication')) to urlpatterns

B. Add path('api-auth/', include('django.contrib.auth.urls')) to urlpatterns

C. Add path('api-auth/', include('rest_framework.views')) to urlpatterns

D. Add path('api-auth/', include('rest_framework.urls')) to urlpatterns

Solution

1. Step 1: Identify the correct URL include for DRF login/logout

   The DRF package provides rest_framework.urls for login/logout views.

2. Step 2: Add the correct path to urlpatterns

   Use path('api-auth/', include('rest_framework.urls')) to enable these pages.

3. Final Answer:

   Add path('api-auth/', include('rest_framework.urls')) to urlpatterns -> Option D

4. Quick Check:

   DRF login/logout URLs = rest_framework.urls [OK]

Hint: Use rest_framework.urls for API auth URLs [OK]

Common Mistakes:

• Using django.contrib.auth.urls instead of DRF URLs
• Trying to include authentication or views modules directly
• Forgetting to include URLs after installing DRF