66 lines
1.3 KiB
Markdown
66 lines
1.3 KiB
Markdown
|
# RuCaptcha
|
||
|
|
|
||
|
|
|
||
|
|
This is a Captcha gem for Rails Application. It base on [mini_magick](https://github.com/minimagick/minimagick) to run ImageMagick command to draw Captcha image.
|
||
|
|
|
||
|
|
So it's NO performance issue, and memory leak issue.
|
||
|
|
|
||
|
|
Idea by: https://ruby-china.org/topics/20558#reply4
|
||
|
|
|
||
|
|
### Requirements
|
||
|
|
|
||
|
|
- ImageMagick
|
||
|
|
- [mini_magick](https://github.com/minimagick/minimagick)
|
||
|
|
|
||
|
|
### Usage
|
||
|
|
|
||
|
|
Put rucaptcha in your `Gemfile`:
|
||
|
|
|
||
|
|
```
|
||
|
|
gem 'rucaptcha'
|
||
|
|
```
|
||
|
|
|
||
|
|
Create `config/initializes/rucaptcha.rb`
|
||
|
|
|
||
|
|
```rb
|
||
|
|
RuCaptcha.configure do
|
||
|
|
# Number of chars, default: 4
|
||
|
|
self.len = 4
|
||
|
|
# Image width, default: 180
|
||
|
|
self.width = 180
|
||
|
|
# Image height, default: 48
|
||
|
|
self.height = 48
|
||
|
|
# Font size, default: 38
|
||
|
|
self.font_size = 38
|
||
|
|
end
|
||
|
|
```
|
||
|
|
|
||
|
|
Controller `app/controller/account_controller.rb`
|
||
|
|
|
||
|
|
```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`
|
||
|
|
|
||
|
|
```erb
|
||
|
|
<form>
|
||
|
|
...
|
||
|
|
<div class="form-group">
|
||
|
|
<%= rucaptcha_input_tag(class: 'form-control', placeholder: 'Input Captcha') %>
|
||
|
|
<%= rucaptcha_image_tag(alt: 'Captcha') %>
|
||
|
|
</div>
|
||
|
|
...
|
||
|
|
</form>
|
||
|
|
```
|
||
|
|
|