List display configuration in Django - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What will be displayed in the Django admin list view?

Given this Django admin configuration, what columns will appear in the list view for the Book model?

Django

from django.contrib import admin
from .models import Book

class BookAdmin(admin.ModelAdmin):
    list_display = ('title', 'author', 'published_date')

admin.site.register(Book, BookAdmin)

A Columns: title, author, published_date

B Columns: title, author only

C Columns: published_date only

D No columns displayed, default view

💡 Hint

Check the list_display attribute in the admin class.

The list_display tuple defines which fields show as columns in the admin list view. Here, it includes 'title', 'author', and 'published_date'.

📝 Syntax

intermediate

Identify the syntax error in this list_display configuration

What is wrong with this Django admin list_display setting?

Django

class AuthorAdmin(admin.ModelAdmin):
    list_display = ['name', 'email',]

A list_display must be a tuple, not a list

B No syntax error; this is valid Python

C Trailing comma inside list is invalid syntax

D Missing parentheses around list_display

💡 Hint

Think about Python list syntax and trailing commas.

In Python, lists can have trailing commas without error. Using a list or tuple for list_display is allowed.

🔧 Debug

advanced

Why does this custom method not show in list_display?

This admin class tries to show a custom method in list_display but it does not appear. Why?

Django

class BookAdmin(admin.ModelAdmin):
    list_display = ('title', 'author_name')

    @admin.display(description='Author Name')
    def author_name(self, obj):
        return obj.author.name

A Custom methods cannot be used in list_display

B author_name should be a property, not a method

C list_display must only contain model field names

D The method author_name lacks the @admin.display decorator

💡 Hint

Check Django 3.2+ requirements for custom list_display methods.

Since Django 3.2, custom methods in list_display should use the @admin.display decorator to work properly.

❓ state_output

advanced

What is the effect of setting list_display_links to None?

Consider this admin configuration. What happens to the list view links?

Django

class ArticleAdmin(admin.ModelAdmin):
    list_display = ('title', 'pub_date')
    list_display_links = None

A No fields will be clickable links to the detail page

B All fields become clickable links

C Only the first field is clickable link

D Raises a TypeError at runtime

💡 Hint

list_display_links controls which columns link to the edit page.

Setting list_display_links = None disables all clickable links in the list view.

🧠 Conceptual

expert

How to optimize list_display for large datasets?

Which approach best improves Django admin list view performance when using list_display with many related fields?

A Use raw SQL queries instead of Django ORM

B Disable pagination to load all items at once

C Use <code>list_select_related</code> to fetch related objects in one query

D Add all related fields to list_display to avoid extra queries

💡 Hint

Think about how to reduce database queries in admin list views.

list_select_related tells Django to use SQL joins to fetch related objects in one query, improving performance.