Forms that work

What this episode covers

Submit it before writing a thank-you template and the visitor sees a 500 error, but the submission was saved and the email was sent. Refresh the thank-you page and it sends again. And an optional dropdown quietly records a choice nobody made.

What you'll learn

• AbstractEmailForm and AbstractFormField: forms the editor builds
• The form template, and the 403 you get without csrf_token
• The 500 that already succeeded: the missing landing template
• Why refreshing the thank-you page resubmits, and the Post/Redirect/Get fix
• Why an optional dropdown has no blank choice, and a custom FormBuilder that adds one
• A honeypot for spam, and why it must not be type="hidden"
• Where the email goes in development
• FormSubmissionsPanel: submissions and CSV export in the admin

Chapters

1. 0:00 A studio you can't contact
2. 0:20 Forms the editor builds
3. 0:40 The template, and csrf_token
4. 0:56 A 500 that already worked
5. 1:11 Why the visitor sends it twice
6. 1:31 Refresh sends it again
7. 1:47 Post, redirect, get
8. 2:08 The dropdown that lies
9. 2:30 A custom FormBuilder
10. 2:45 A honeypot for spam
11. 3:14 Where the email goes
12. 3:29 The contact form
13. 3:39 The thank-you page
14. 3:46 Commit and tag
15. 3:50 Next episode

Versions on screen

Wagtail 7.4.3 · Django 6.1.1 · Python 3.12. Recorded on Windows; macOS and Linux commands are in the repository for every episode.