WTForms hCaptcha

Custom WTForms field that handles hCaptcha display and validation.

hCaptcha is a CAPTCHA service that 'protects user privacy, rewards websites, and helps companies get their data labelled'. This helps to prevent spam on websites by adding a challenge to forms that are hard for computers to solve, but easy for humans to solve.

I wanted to use hCaptcha in one of my projects and although there are already Python libraries for working with hCaptcha, I had already used the WTForms ecosystem in that project so I wanted a drop in solution and as there were none at the time, I decided to create my own.

This is a modified version of wtforms-recaptcha by Artem Gluvchynsky to work with hCaptcha.

Installation

Use pip to install on all systems:

pip install wtforms-hcaptcha

Usage Example

This example creates an empty form with just a CAPTCHA field.

from wtforms.form import Form
from wtforms_hcaptcha import HcaptchaField

class MyForm(Form):
    captcha = HcaptchaField(site_key="YOUR_SITE_KEY_HERE", secret_key="YOUR_SECRET_KEY_HERE")

form = MyForm(request.form, captcha={
    # note this needs to be edited to get the correct IP address when using a reverse proxy
    "ip_address": request.remote_addr
})

if form.validate():
    print("You are not a robot!")
else:
    print(form.errors["captcha"])

Development Setup

This project uses Poetry to manage dependencies and packaging. Here are the installation instructions for Poetry.

Contributing

1. Fork it (https://github.com/jake-walker/wtforms-hcaptcha/fork)
2. Create your feature branch (git checkout -b feature/foobar)
3. Commit your changes (git commit -am "Add some foobar")
4. Push to the branch (git push origin feature/foobar)
5. Create a new pull request