Custom template filters in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to register a custom template filter named 'cut'.

Django

from django import template
register = template.[1]()

@register.filter
def cut(value, arg):
    return value.replace(arg, '')

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

ALibrary

BFilter

CTag

DRegister

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Filter()' instead of 'Library()' to create the register object.

Forgetting to create the register object before defining filters.

You create a template Library instance with template.Library() to register custom filters.

2fill in blank

medium

Complete the code to apply the custom filter 'cut' in a Django template.

Django

{{ '{{ some_text|[1]:"a" }}' }}

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

Aremove

Breplace

Ccut

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect filter names like 'remove' or 'replace' which are not registered.

Forgetting to use quotes around the argument in the template.

You use the filter name 'cut' in the template with the pipe symbol to apply it.

3fill in blank

hard

Fix the error in the filter function to handle None values safely.

Django

@register.filter
def cut(value, arg):
    if value is None:
        return [1]
    return value.replace(arg, '')

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

A''

BNone

Cvalue

Darg

Attempts:

3 left

💡 Hint

Common Mistakes

Returning None causes template rendering errors.

Returning the argument instead of a string.

Returning an empty string '' when value is None avoids errors in templates.

4fill in blank

hard

Fill both blanks to register a filter that converts text to uppercase.

Django

@register.filter(name=[1])
def [2](value):
    return value.upper()

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

A"uppercase"

Buppercase

C"upper"

Dupper

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted filter names causes syntax errors.

Using quotes around the function name.

The filter name is a string 'uppercase' and the function name is 'upper' to convert text.

5fill in blank

hard

Fill all three blanks to create a filter that repeats text n times.

Django

@register.filter
def [1](value, n):
    return value * [2]

# Usage in template: {{ '{{ some_text|repeat:[3] }}' }}

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

Arepeat

Bn

C3

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong function names that don't match the filter usage.

Multiplying by value instead of n.

Passing variable names instead of a number in the template.

The function name is 'repeat', it multiplies value by n, and in template n can be 3.