Flask-ReCaptcha

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

Can also be used as standalone

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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

RECAPTCHA_ENABLED = True
RECAPTCHA_SITE_KEY = ""
RECAPTCHA_SECRET_KEY = ""

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(c) 2015 Mardix