urlpatterns list structure in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the function needed to define URL patterns.

Django

from django.urls import [1]

Drag options to blanks, or click blank then click option'

Apath

Binclude

Curl

Droute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'include' instead of 'path' for defining individual URL patterns.

Using 'url' which is deprecated in modern Django versions.

The path function is used to define URL patterns in Django's urlpatterns list.

2fill in blank

medium

Complete the code to define a simple URL pattern that maps the root URL to a view named 'home_view'.

Django

urlpatterns = [
    [1]('', home_view, name='home'),
]

Drag options to blanks, or click blank then click option'

Ainclude

Bpath

Curl

Droute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'include' instead of 'path' for direct view mapping.

Using 'url' which is outdated.

The path function is used to define URL patterns, mapping the empty string '' (root URL) to the home_view function.

3fill in blank

hard

Fix the error in the URL pattern by completing the code to correctly include another URLconf module named 'blog.urls'.

Django

urlpatterns = [
    path('blog/', [1]('blog.urls')),
]

Drag options to blanks, or click blank then click option'

Ainclude

Bpath

Curl

Droute

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'path' instead of 'include' to include other URL modules.

Using 'url' which is deprecated.

The include function is used to include other URL configurations inside the main urlpatterns list.

4fill in blank

hard

Fill both blanks to create a URL pattern that maps 'about/' to a view called 'about_view' with the name 'about'.

Django

urlpatterns = [
    [1]('[2]', about_view, name='about'),
]

Drag options to blanks, or click blank then click option'

Apath

Binclude

Cabout/

Dhome/

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'include' instead of 'path' for direct view mapping.

Using 'home/' instead of 'about/' as the URL path.

The path function defines the URL pattern, and the string 'about/' specifies the URL path segment.

5fill in blank

hard

Fill all three blanks to create a URL pattern that maps 'contact/' to a view called 'contact_view' with the name 'contact'.

Django

urlpatterns = [
    [1]('[2]', [3], name='contact'),
]

Drag options to blanks, or click blank then click option'

Apath

Bcontact/

Ccontact_view

Dinclude

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'include' instead of 'path' for direct view mapping.

Mixing up the URL path string and the view function.

The path function defines the URL pattern, 'contact/' is the URL path, and contact_view is the view function handling the request.

Practice

1. What is the main purpose of the urlpatterns list in a Django project?

easy

A. To store user data in the database

B. To connect website addresses (URLs) to the code that shows pages

C. To define the style of the website pages

D. To manage user login and authentication

Solution

1. Step 1: Understand the role of urlpatterns

   The urlpatterns list holds URL patterns that link URLs to views (code that shows pages).

2. Step 2: Compare with other options

   Storing user data uses models, defining styles uses templates/CSS, and managing authentication uses Django's auth system -- none of these are handled by urlpatterns.

3. Final Answer:

   To connect website addresses (URLs) to the code that shows pages -> Option B

4. Quick Check:

   urlpatterns connects URLs to views [OK]

Hint: Remember: urlpatterns links URLs to views [OK]

Common Mistakes:

• Thinking urlpatterns stores data
• Confusing urlpatterns with styling or authentication

2. Which of the following is the correct way to add a URL pattern to the urlpatterns list?

easy

A. link('home/', views.home_view)

B. url('home/', views.home_view)

C. path('home/', views.home_view)

D. route('home/', views.home_view)

Solution

1. Step 1: Identify the correct function for URL patterns

   Django uses path() to define URL patterns in urlpatterns.

2. Step 2: Check other options

   url() was used in older Django versions but is deprecated; route() and link() are not Django functions.

3. Final Answer:

   path('home/', views.home_view) -> Option C

4. Quick Check:

   Use path() for URL patterns [OK]

Hint: Use path() to add URLs in urlpatterns [OK]

Common Mistakes:

• Using deprecated url() instead of path()
• Trying non-existent functions like route() or link()

3. Given this urlpatterns list, what URL will show the about_view page?

from django.urls import path
from . import views

urlpatterns = [
    path('about/', views.about_view),
    path('contact/', views.contact_view),
]

medium

A. /contact/

B. /about-us/

C. /home/

D. /about/

Solution

1. Step 1: Read the urlpatterns entries

   The list has path('about/', views.about_view) which means the URL /about/ shows about_view.

2. Step 2: Match URLs to views

   /contact/ shows contact_view, others like /home/ or /about-us/ are not defined.

3. Final Answer:

   /about/ -> Option D

4. Quick Check:

   path('about/', views.about_view) means URL is /about/ [OK]

Hint: Match the string in path() to the URL [OK]

Common Mistakes:

• Confusing URL strings with view names
• Assuming URL ends without trailing slash

4. Identify the error in this urlpatterns list:

from django.urls import path
from . import views

urlpatterns = [
    path('home/', views.home_view),
    path('about/', views.about_view
]

medium

A. Missing closing parenthesis in second path()

B. Using views instead of view functions

C. Incorrect import statement

D. urlpatterns should be a dictionary, not a list

Solution

1. Step 1: Check syntax of each path() call

   The second path('about/', views.about_view is missing a closing parenthesis.

2. Step 2: Verify other parts

   Imports and list structure are correct; views is correctly used to reference functions.

3. Final Answer:

   Missing closing parenthesis in second path() -> Option A

4. Quick Check:

   Every path() needs matching parentheses [OK]

Hint: Count parentheses in each path() call [OK]

Common Mistakes:

• Forgetting closing parenthesis
• Thinking urlpatterns is a dictionary

5. You want to include URL patterns from an app called blog inside your main urlpatterns. Which is the correct way to do this?

hard

A. path('blog/', include('blog.urls'))

B. path('blog/', blog.urls)

C. include('blog.urls')

D. path('blog/', 'blog.urls')

Solution

1. Step 1: Understand how to include app URLs

   Use include() inside path() to add app URL patterns under a prefix.

2. Step 2: Check other options

   include('blog.urls') misses the path() wrapper; path('blog/', blog.urls) misses include(); path('blog/', 'blog.urls') passes a string instead of include().

3. Final Answer:

   path('blog/', include('blog.urls')) -> Option A

4. Quick Check:

   Use include() inside path() for app URLs [OK]

Hint: Use include() inside path() to add app URLs [OK]

Common Mistakes:

• Forgetting to use include()
• Passing string directly without include()
• Not wrapping include() inside path()