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https://github.com/adanselm/exrecaptcha

Simple reCaptcha display/verify code for Elixir applications. Using Exrecaptcha with a CMS such as Phoenix is easy.
https://github.com/adanselm/exrecaptcha

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Simple reCaptcha display/verify code for Elixir applications. Using Exrecaptcha with a CMS such as Phoenix is easy.

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# Exrecaptcha

Simple [ReCaptcha] display/verify code for Elixir applications.
Using Exrecaptcha with a CMS such as [Phoenix] is easy.

[ReCaptcha]: http://www.google.com/recaptcha
[Phoenix]: https://github.com/phoenixframework/phoenix

## Installation

Set as a dep in your mix.exs and ensure it is running with your app:

```elixir
def application do
[
# ...
applications: [:phoenix, :cowboy, :logger, :exrecaptcha]
# ...
]
end

defp deps do
[
{:phoenix, "0.5.0"},
{:cowboy, "~> 1.0.0"},
#...
{:ibrowse, github: "cmullaparthi/ibrowse", tag: "v4.1.0"},
{:exrecaptcha, "~> 0.0.3"}
]
end
```

And fetch your project's dependencies:

```bash
$ mix deps.get
```

## Config

In your application's config.exs :

```elixir
config :exrecaptcha,
api_config: %{ verify_url: "http://www.google.com/recaptcha/api/verify",
public_key: "YOUR_PUBLIC_KEY",
private_key: "YOUR_PRIVATE_KEY" }
```

You can use https instead of http for the `verify_url`.

## Usage

### View

Put this code somewhere in your html template:

```html

...
<%= safe Exrecaptcha.display %>
...

```

### Controller

Provided you've set the routing properly, you just have to call

```elixir
# your post method should route you here:
def create(conn, params) do
# do stuff, then check for the validity of the captcha
:ok = verify_captcha(conn, params)
end

defp verify_captcha(conn, %{"recaptcha_challenge_field" => challenge,
"recaptcha_response_field" => response}) do
remote_ip = conn.remote_ip
Exrecaptcha.verify(remote_ip, challenge, response)
end
```

##TODO

- No option for recaptcha display can be set yet
- Error handling is quite inexistent (throws RuntimeError)
- No tests

## Changelog

- 0.0.3: Update HTTPotion dependency, avoiding elixir version warnings
- 0.0.2: Use HTTPS by default
- 0.0.1: Initial release

## Licensing
Copyright © 2014 [Adrien Anselme](https://github.com/adanselm) and [contributors](https://github.com/adanselm/exrecaptcha/graphs/contributors)
This work is free. You can redistribute it and/or modify it under the
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See the COPYING file for more details.