Flash messages for user feedback in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the function needed to show flash messages in Flask.

Flask

from flask import Flask, render_template, [1]

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

Asession

Burl_for

Cflash

Dredirect

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'redirect' instead of 'flash'.

Forgetting to import 'flash' at all.

The flash function is used to create flash messages in Flask.

2fill in blank

medium

Complete the code to flash a success message after a user logs in.

Flask

flash('Login successful!', category=[1])

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

A'success'

B'warning'

C'info'

D'error'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'error' category for success messages.

Omitting the category parameter.

The category 'success' is used to indicate a positive message.

3fill in blank

hard

Fix the error in the code to display flash messages in the template using Jinja2.

Flask

{% for message in get_flashed_messages(with_categories=[1]) %}
  <div class="alert alert-{{ message[0] }}">{{ message[1] }}</div>
{% endfor %}

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

ATrue

BFalse

CNone

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using False causes only messages without categories to be returned.

Using None or 0 does not return categories.

Setting with_categories=True returns messages with their categories as tuples.

4fill in blank

hard

Fill both blanks to flash an error message and redirect to the login page.

Flask

flash('Invalid credentials', category=[1])
return [2](url_for('login'))

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

A'error'

Bredirect

Curl_for

D'success'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'success' category for error messages.

Using 'url_for' instead of 'redirect' for returning.

Use 'error' category for error messages and redirect to send user to another page.

5fill in blank

hard

Fill all three blanks to flash a message, redirect, and generate the URL for the home page.

Flask

flash('Welcome back!', category=[1])
return [2]([3]('home'))

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

A'success'

Bredirect

Curl_for

D'info'

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up redirect and url_for.

Using wrong category for the message.

Flash a success message, then redirect to the URL generated for 'home' using url_for.