DevDay-RubyTutorialSession

344939 DevDay-RubyTutorialSession 325030 2007-10-02T02:01:43Z http://jasonpa.springnote.com/pages/344939 2007-07-03T07:37:24Z <blockquote> 튜토리얼1 - [멘토:강문식, 유지만] Ruby반 - 세미나룸#4 - 최종참가자: 10명 - 날개, 김성안, 브루펜시럽, 우주, 트위니, Celeste, Dano, iron, Raven, 이두원 </blockquote>   <h3>참고자료</h3> 링크 <ul> <li><a href="http://del.icio.us/jasonpa/devda" title="http://del.icio.us/jasonpa/devda" class="external"></a><a href="http://del.icio.us/jasonpa/devday" title="http://del.icio.us/jasonpa/devday" class="external">http://del.icio.us/jasonpa/devday</a></li> </ul> 문서 <ul> <li><a href="http://jasonpa.springnote.com/pages/344939/attachments/141810" title="REST-cheatsheet.pdf" class="external">REST-cheatsheet.pdf</a></li> <li><a href="http://jasonpa.springnote.com/pages/344939/attachments/141811" title="rest.pdf " class="external">rest.pdf  </a></li> <li><a href="http://jasonpa.springnote.com/pages/344939/attachments/141809" title="REST_ARes.pdf" class="external">REST_ARes.pdf</a><a href="/pages/344939/attachments/141809" title="REST_ARes.pdf" class="attachment"></a></li> </ul> 소스 <ul> <li><a href="http://jasonpa.springnote.com/pages/344939/attachments/141878" title="snote.tar.gz" class="external">snote.tar.gz</a>  (vendor/rails 를 제외한 소스입니다)</li> </ul>   <h3>셈플 어플리케이션 만들기 (with ActiveResource)</h3> 목표 : ActiveRecord 를 사용하지 않고 ActiveRecord 의 REST 버젼이라고 할 수 있는 ActiveResource 만을 사용해서 스프링노트의 페이지를 다룰 수 있는 게시판을 만들어 본다.   <h4>step1 어플리케이션 생성</h4> <ol class="code"> <li>> rails snote </li> <li>> cd snote</li> <li> </li> </ol> <h4>step2 EdgeRails</h4> <ol class="code"> <li>> svn co http://svn.rubyonrails.org/rails/trunk vendor/rails</li> </ol> Edge Rails 란 레일스 최신 개발소스를 의미함. <div> (참고) vendor/rails 디렉토리에 최신의 레일스 소스를 내려받으면 Edge 로 개발하는 환경이 갖추어 진다. <ol class="code"> <li> vendor/rails/railties/lib/initializer.rb 에 아래와 같은 메소드가 존재. </li> <li> def framework_root_path </li> <li>   defined?(::RAILS_FRAMEWORK_ROOT) ? ::RAILS_FRAMEWORK_ROOT : "#{root_path}/vendor/rails" </li> <li> end </li> </ol> </div> <h4>step3 오픈마루 인증센타를 통해서 인증하기</h4> 인증키 받기 : <a href="http://dev.springnote.com/pages/334513" class="external" title="도움말">도움말</a> 참조   <h5>step3.1 레일스 환경설정 수정</h5> config/springnote.yml 파일 생성후 아래와 같은 정보 추가. <ol class="code"> <li> springnote: </li> <li>   open_id: 자신의오픈아이디 </li> <li>   user_key: 인증센타를통해받은유저키 </li> <li>   app_key: 인증센타를통해받은어플리케이션키 </li> </ol> <h4>step4 Scaffold 를 이용해서 모델, 컨트롤러, 뷰 생성</h4> <ol class="code"> <li>> script/generate scaffold page title:string source:text</li> </ol>   <h4>step5 ActiveRecord 를 사용하지 않도록 설정 / 패치</h4> <h5>step5.1 config/environment.rb 파일 수정</h5> ActiveRecord 를 사용하지 않도록 설정 <ol class="code"> <li>config.frameworks -= [ :active_record ]</li> </ol>   필수 세션 정의 필요 <ol class="code"> <li>config.action_controller.session = {         :session_key => "_board_session",         :secret => "some secret phrase" }</li> </ol>   스프링노트 API 인증에 필요한 설정 파일 내용 로딩 (springnote.yml) <ol class="code"> <li>CONFIG = YAML::load_file("#{RAILS_ROOT}/config/springnote.yml")</li> </ol>   (참고 : 개발환경에서 상세하게 에러메시지를 남기도록 설정) : config/environmants/development.rb 파일내용중 아래와 같이 수정 <ol class="code"> <li>config.whiny_nils = false # 원래는 true</li> </ol>   <h4>step6 Monkey Patch</h4> lib/initializer.rb 작성 <ol class="code"> <li>module Rails   class Initializer     # Thanks to http://dev.rubyonrails.org/ticket/6795     def load_observers       return unless configuration.frameworks.include?(:active_record)       ActiveRecord::Base.instantiate_observers     end   end end</li> </ol>   config/environment.rb 파일에 monkey_patch 한 라이브러리 파일 로딩하도록 수정 <ol class="code"> <li>require 'lib/initializer.rb'</li> </ol>   <h4>step7 컨트롤러 수정 (app/controller/pages_controller.rb)</h4> <ol class="code"> <li>class PagesController < ApplicationController   before_filter :update_site </li> <li> </li> <li>...... </li> <li> </li> <li>  private</li> <li>  def update_site</li> <li>    user_id = CGI.escape(CONFIG['springnote']['open_id'])</li> <li>    password = [ CONFIG['springnote']['user_key'], CONFIG['springnote']['app_key'] ].join(".")</li> <li>    Page.site = "http://#{user_id}:#{password}@api.springnote.com/"</li> <li>  end </li> </ol>   <h4>step8 모델 수정 (app/model/page.rb)</h4> <ol class="code"> <li>class Page < ActiveResource::Base   set_primary_key 'identifier'     def to_param     identifier.to_s   end end</li> </ol>   <h4>step9 뷰 수정 (app/views/pages/show.html.erb)</h4> <ol class="code"> <li></li> <li>  Title:</li> <li>  <%=h @page.title %></li> <li></li> <li></li> <li>  Source:</li> <li>  <%=h @page.source %></li> <li></li> <li></li> <li><%=@page.source %></li> <li></li> <li><%= link_to 'Edit', edit_page_path(@page) %> |</li> <li><%= link_to 'Back', pages_path %></li> </ol>   <h4>step10 업데이트 오류 해결</h4> app/conteollers/page_controller.rb 에서 update 부분을 수정하면 됨.       # ActiveResource 에는 update_attributes 가 구현이 안되어있다. 때문에 아래와 같이 수정하고 명시적으로 save 를 호출해주면 됨. <ol class="code"> <li>   def update </li> <li>     @page = Page.find(params[:id]) </li> <li>     respond_to do |format| </li> <li>       params[:page][:identifier] = params[:id] </li> <li>       if @page.attributes = params[:page] </li> <li>         @page.save </li> <li>         flash[:notice] = 'Page was successfully updated.' </li> <li>         format.html { redirect_to(@page) } </li> <li>         format.xml  { head :ok } </li> <li>       else </li> <li>         format.html { render :action => "edit" } </li> <li>         format.xml  { render :xml => @page.errors, :status => :unprocessable_entity } </li> <li>       end </li> <li>     end </li> <li>   end </li> </ol>   <h3>기타 : 레일스 콘솔 사용 관련</h3> 개발환경 레일스 콘솔 실행 : script/console   콘솔상에서 아래와 같이 한줄씩 입력해보고 나오는 결과를 참고해보자.   <ol class="code"> <li>>> app.class >> app.get "/pages/페이지번호" >> app.get "/pages" >> app.response.body >> app.cookies >> helper.text_field_tag :foo </li> <li>>> app.methods.grep(/_path$/).sort</li> <li>>> _    (마지막 아웃풋을 보여줌)</li> <li>>> y _</li> </ol>   <h3>기타2 : 엑티브리소스 참고</h3> <h5>오류코드</h5> 200 - 399:: Valid response, no exception 404:: ActiveResource::ResourceNotFound 409:: ActiveResource::ResourceConflict 422:: ActiveResource::ResourceInvalid (rescued by save as validation errors) 401 - 499:: ActiveResource::ClientError 500 - 599:: ActiveResource::ServerError <h5>Table 1.1: HTTP Verbs and REST-URLs</h5> <table class="datatable"> <thead> <tr> <th>HTTP Verb</th> <th>REST-URL</th> <th>Action</th> <th>URL without REST</th> </tr> </thead> <tbody> <tr> <td>GET</td> <td>/projects/1</td> <td>show</td> <td>GET /projects/show/1</td> </tr> <tr> <td>DELETE</td> <td>/projects/1</td> <td>destroy</td> <td>GET /projects/destroy/1</td> </tr> <tr> <td>PUT</td> <td>/projects/1</td> <td>update</td> <td>POST /projects/update/1</td> </tr> <tr> <td>POST</td> <td>/projects</td> <td>create</td> <td>POST /projects/create</td> </tr> </tbody> </table>   <h5>Table 1.2: Standard Path methods</h5> <table class="datatable"> <thead> <tr> <th>Path Method</th> <th>HTTP Verb</th> <th>Path</th> <th>Requested Action</th> </tr> </thead> <tbody> <tr> <td>projects_path</td> <td>GET</td> <td>/projects</td> <td>index</td> </tr> <tr> <td>projects_path(1)</td> <td>GET</td> <td>/projects/1</td> <td>show</td> </tr> <tr> <td>new_project_path</td> <td>GET</td> <td>/projects/new</td> <td>new</td> </tr> <tr> <td>edit_project_path</td> <td>GET</td> <td>/projects/1;edit</td> <td>edit</td> </tr> <tr> <td>projects_path</td> <td>POST</td> <td>/projects</td> <td>create</td> </tr> <tr> <td>projects_path(1)</td> <td>PUT</td> <td>/projects/1</td> <td>update</td> </tr> <tr> <td>projects_path(1)</td> <td>DELETE</td> <td>/projects/1</td> <td>destroy</td> </tr> </tbody> </table> <h5>REST Routing</h5> config/routes.rb : <ol class="code"> <li>map.resources :projects</li> </ol>   map.resources :projects <table class="datatable"> <thead> <tr> <th>Route</th> <th>Generated Helper</th> </tr> </thead> <tbody> <tr> <td>projects</td> <td>projects_url, projects_path</td> </tr> <tr> <td>project</td> <td>project_url(id), project_path(id)</td> </tr> <tr> <td>new_project</td> <td>new_project_url, new_project_path</td> </tr> <tr> <td>edit_project</td> <td>edit_project_url(id), edit_</td> </tr> </tbody> </table>   이 글은 <a href="http://jasonpa.springnote.com/pages/344939">스프링노트</a>에서 작성되었습니다. jasonpa jasonpa 104