This is a Captcha gem for Rails Applications. It runs an ImageMagick command to draw Captcha image - so it has NO performance issues or memory leak issues.
There is NO: RMagick
Idea by: https://ruby-china.org/topics/20558#reply4
- Only need
ImageMagick
, NoRMagick
, Nomini_magick
; - For Rails Application;
- Simple, Easy to use;
- File Caching for performance.
- ImageMagick
sudo apt-get install imagemagick
brew install imagemagick ghostscript
Put rucaptcha in your Gemfile
:
gem 'rucaptcha'
Create config/initializers/rucaptcha.rb
RuCaptcha.configure do
# Number of chars, default: 4
self.len = 4
# Image font size, default: 45
self.font_size = 45
# Cache generated images in file store, this is config files limit, default: 100
# set 0 to disable file cache.
self.cache_limit = 100
# Custom captcha code expire time if you need, default: 2 minutes
# self.expires_in = 120
end
Edit config/routes.rb
, add the following code:
Rails.application.routes.draw do
...
mount RuCaptcha::Engine => "/rucaptcha"
...
end
Controller app/controller/account_controller.rb
class AccountController < ApplicationController
def create
@user = User.new(params[:user])
if verify_rucaptcha?(@user) && @user.save
redirect_to root_path, notice: 'Sign up successed.'
else
render 'account/new'
end
end
end
View app/views/account/new.html.erb
<form>
...
<div class="form-group">
<%= rucaptcha_input_tag(class: 'form-control', placeholder: 'Input Captcha') %>
<%= rucaptcha_image_tag(alt: 'Captcha') %>
</div>
...
</form>
describe 'sign up and login', type: :feature do
before do
allow_any_instance_of(ActionController::Base).to receive(:verify_rucaptcha?).and_return(true)
end
it { ... }
end