475676 Ruby On Rails, OpenId 로 로그인 기능 구현 3354932007-09-15T10:52:48Zhttp://shinji.springnote.com/pages/4756762007-09-15T10:52:12Z<p> </p>
<h4>오픈 아이디로 로그인 기능 구현</h4>
<p><a href="http://agilewebdevelopment.com/plugins/openidauthentication" class="con_link" target="_blank">참고문서</a></p>
<p>Plugins - Open Id Authentication 라는 플러그인으로 쉽게 구현할 수 있다.</p>
<p>우선은 ruby-openid 를 먼저 설치해야한다.</p>
<pre>
<code>gem install ruby-openid<br /></code>
</pre>
<p>로 설치.</p>
<p>설치 하고 플러그인을 설치한다.</p>
<pre>
<code>ruby script/plugin install http://svn.rubyonrails.org/rails/plugins/open_id_authentication/<br /></code>
</pre>
<p>app/controllers/session_controller.rb 을 다음과 같이 만든다.</p>
<pre>
<code> class SessionController < ApplicationController<br />
def create<br />
if open_id?(params[:name])<br />
open_id_authentication(params[:name])<br />
else<br />
password_authentication(params[:name], params[:password])<br />
end<br />
end<br />
<br />
protected<br />
def password_authentication(name, password)<br />
if @current_user = @account.users.find_by_name_and_password(params[:name], params[:password])<br />
successful_login<br />
else<br />
failed_login "Sorry, that username/password doesn't work"<br />
end<br />
end<br />
<br />
def open_id_authentication(identity_url)<br />
authenticate_with_open_id(identity_url) do |status, identity_url|<br />
case status<br />
when :missing<br />
failed_login "Sorry, the OpenID server couldn't be found"<br />
when :canceled<br />
failed_login "OpenID verification was canceled"<br />
when :failed<br />
failed_login "Sorry, the OpenID verification failed"<br />
when :successful<br />
if @current_user = @account.users.find_by_identity_url(identity_url)<br />
successful_login<br />
else<br />
failed_login "Sorry, no user by that identity URL exists"<br />
end<br />
end<br />
end<br />
end<br />
<br />
private<br />
def successful_login<br />
session[:user_id] = @current_user.id<br />
redirect_to(root_url)<br />
end<br />
<br />
def failed_login(message)<br />
flash[:error] = message<br />
redirect_to(new_session_url)<br />
end<br />
<br />
# Set #root_url if your root url has a different named route.<br />
#<br />
# map.home '', :controller => ..., :action => ...<br />
#<br />
# Otherwise, name the route 'root' and leave this method out.<br />
def root_url<br />
home_url<br />
end<br />
end<br /></code>
</pre>
<h5>Opend ID 를 이용한 간단한 등록 방법.</h5>
<p>OpenId 프로필 교환 프로토콜은 다음을 참고</p>
<p><a href="http://www.openidenabled.com/openid/simple-registration-extension" class="con_link" target="_blank">http://www.openidenabled.com/openid/simple-registration-extension</a></p>
<p>위에서 open_id_authentication 을 다음과 같이 바꿈으로서 해결된다.</p>
<pre>
<code> def open_id_authentication(identity_url)<br />
# Pass optional :required and :optional keys to specify what sreg fields you want.<br />
# Be sure to yield registration, a third argument in the #authenticate_with_open_id block.<br />
authenticate_with_open_id(identity_url, :required => [:nickname, :email], :optional => :fullname) do |status, identity_url, registration|<br />
case status<br />
when :missing<br />
failed_login "Sorry, the OpenID server couldn't be found"<br />
when :canceled<br />
failed_login "OpenID verification was canceled"<br />
when :failed<br />
failed_login "Sorry, the OpenID verification failed"<br />
when :successful<br />
if @current_user = @account.users.find_by_identity_url(identity_url)<br />
# registration is a hash containing the valid sreg keys given above<br />
# use this to map them to fields of your user model<br />
{'login=' => 'nickname', 'email=' => 'email', 'display_name=' => 'fullname'}.each do |attr, reg|<br />
current_user.send(attr, registration[reg]) unless registration[reg].blank?<br />
end<br />
unless current_user.save<br />
flash[:error] = "Error saving the fields from your OpenID profile: #{current_user.errors.full_messages.to_sentence}"<br />
end<br />
successful_login<br />
else<br />
failed_login "Sorry, no user by that identity URL exists"<br />
end<br />
end<br />
end<br />
end<br /></code>
</pre>
<p>플러그인 저장소</p>
<p><a href="http://svn.rubyonrails.org/rails/plugins/open_id_authentication/" class="con_link" target="_blank">http://svn.rubyonrails.org/rails/plugins/open_id_authentication/</a></p>
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