Flask-ReCaptcha

The new Google ReCaptcha implementation for Flask without Flask-WTF.

Can also be used as standalone

Install

pip install flask-recaptcha

Usage

Implementation view.py

from flask import Flask
from flask_recaptcha import ReCaptcha

app = Flask(__name__)
recaptcha = ReCaptcha(app=app)

#or 

recaptcha = Recaptcha()
recaptcha.init_app(app)

In your template: {{ recaptcha }}

Inside of the form you want to protect, include the tag: {{ recaptcha }}

It will insert the code automatically

<form method="post" action="/submit">
    ... your field
    ... your field

    {{ recaptcha }}

    [submit button]
</form>

Verify the captcha

In the view that's going to validate the captcha

from flask import Flask
from flask_recaptcha import ReCaptcha

app = Flask(__name__)
recaptcha = ReCaptcha(app=app)

@route("/submit", methods=["POST"])
def submit():

    if recaptcha.verify():
        # SUCCESS
        pass
    else:
        # FAILED
        pass

Api

reCaptcha.init(app, site_key, secret_key, is_enabled=True)

reCaptcha.get_code()

Returns the HTML code to implement. But you can use {{ recaptcha }} directly in your template

reCaptcha.verfiy()

Returns bool

In Template

Just include {{ recaptcha }} wherever you want to show the recaptcha

Config

Flask-ReCaptcha is configured through the standard Flask config API. These are the available options:

RECAPTCHA_ENABLED: Bool - True by default, when False it will bypass validation

RECAPTCHA_SITE_KEY : Public key

RECAPTCHA_SECRET_KEY: Private key

The following are Optional arguments.

RECAPTCHA_THEME: String - Theme can be 'light'(default) or 'dark'

RECAPTCHA_TYPE: String - Type of recaptcha can be 'image'(default) or 'audio'

RECAPTCHA_SIZE: String - Size of the image can be 'normal'(default) or 'compact'

RECAPTCHA_LANGUAGE: String - Language of the recaptcha texts. Defaults to 'en' (english). You can use fa (persian), ar (arabic), fr (french), etc.

RECAPTCHA_TABINDEX: Int - Tabindex of the widget can be used, if the page uses tabidex, to make navigation easier. Defaults to 0

RECAPTCHA_ENABLED = True
RECAPTCHA_SITE_KEY = ""
RECAPTCHA_SECRET_KEY = ""
RECAPTCHA_THEME = "dark"
RECAPTCHA_TYPE = "image"
RECAPTCHA_SIZE = "compact"
RECAPTCHA_LANGUAGE = "en"
RECAPTCHA_RTABINDEX = 10

fredstro/flask-recaptcha