Template filters (date, length, default) in Django - Mini Project: Build & Apply

Using Django Template Filters: date, length, default

📖 Scenario: You are building a simple Django web page to display a list of events. Each event has a name, a date, and an optional description.Sometimes the description might be missing, and the date should be shown in a friendly format. You also want to show how many events are in the list.

🎯 Goal: Create a Django template that uses the date, length, and default filters to display event information clearly and handle missing descriptions gracefully.

📋 What You'll Learn

Create a list of events with exact data

Add a variable to count events

Use the date filter to format event dates

Use the default filter to show a fallback description

Use the length filter to show the number of events

💡 Why This Matters

🌍 Real World

Displaying event information on websites is common. Using template filters helps format data cleanly and handle missing information gracefully.

💼 Career

Knowing how to use Django template filters is essential for backend web developers working with Django to create user-friendly web pages.

1

Create the events list

Create a Python list called events with these exact dictionaries: {'name': 'Concert', 'date': datetime.date(2024, 7, 20), 'description': 'Live music show'}, {'name': 'Art Expo', 'date': datetime.date(2024, 8, 5), 'description': ''}, and {'name': 'Food Festival', 'date': datetime.date(2024, 9, 10)}. Import datetime to use datetime.date.

Django

import datetime

# Create the events list with exact dictionaries
# Your code here

Need a hint?

Remember to import datetime and use datetime.date(year, month, day) for dates.

2

Add a variable to count events

Create a variable called event_count and set it to the length of the events list using the len() function.

Django

import datetime

events = [
    {'name': 'Concert', 'date': datetime.date(2024, 7, 20), 'description': 'Live music show'},
    {'name': 'Art Expo', 'date': datetime.date(2024, 8, 5), 'description': ''},
    {'name': 'Food Festival', 'date': datetime.date(2024, 9, 10)}
]

# Create event_count as the length of events
# Your code here

Need a hint?

Use len(events) to get the number of items in the list.

3

Use template filters for date and default description

Write a Django template snippet that loops over events using {% for event in events %}. Inside the loop, display the event name, the event date formatted as F j, Y using the date filter, and the event description using the default filter with the fallback text 'No description available'. Close the loop with {% endfor %}.

Django

{% for event in events %}
  
  
{% endfor %}

Need a hint?

Use {{ variable|filter }} syntax for filters. The date filter formats dates, and default shows fallback text if the value is empty or missing.

4

Show the total number of events using length filter

Add a line above the loop that displays the total number of events using the length filter on the events list inside double curly braces. The text should read exactly: Total events: X where X is the length of events.

Django

{% for event in events %}
  {{ event.name }}
  Date: {{ event.date|date:"F j, Y" }}
  Description: {{ event.description|default:"No description available" }}
{% endfor %}

Need a hint?

Use {{ events|length }} to get the number of items in the list inside the template.