{"id":1565,"date":"2006-12-13T21:39:51","date_gmt":"2006-12-13T13:39:51","guid":{"rendered":"http:\/\/ihower.idv.tw\/blog\/archives\/1565"},"modified":"2015-09-05T10:50:14","modified_gmt":"2015-09-05T02:50:14","slug":"rails-restful-activeresource-%e9%a0%90%e8%a6%bd","status":"publish","type":"post","link":"https:\/\/ihower.tw\/blog\/1565-rails-restful-activeresource-%e9%a0%90%e8%a6%bd","title":{"rendered":"Rails RESTful ActiveResource \u5148\u7779\u70ba\u5feb"},"content":{"rendered":"

\u5728\u4e0a\u4e00\u7bc7 Rails RESTful \u76f8\u95dc\u5de5\u5177<\/a> \u4e2d\u6709\u63d0\u5230\uff0cActiveReource \u662f\u4e00\u500b\u91dd\u5c0d Rails RESTful APIs \u6240\u7528\u7684 client-side XML<\/span> consumer\uff0c\u6211\u5011\u82b1\u4e86\u597d\u5e7e\u7bc7\u5b78\u7fd2\u70ba\u4f55 RESTful \u8ddf\u5982\u4f55\u7528 map.resources \u4f86\u67b6\u51fa server-side provider\uff0c\u800c\u5177\u9ad4\u7684\u91cd\u5927\u597d\u8655\u5247\u6703\u5728 ARes \u4e2d\u9ad4\u73fe\u51fa\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u50cf\u5c0d ActiveRecord \u7684\u7269\u4ef6\u64cd\u4f5c\u4e00\u6a23\u4f86\u8655\u7406 ARes\uff0c\u53ea\u662f\u5b83\u7684\u5167\u90e8\u904b\u4f5c\u5c0d\u8c61\u8b8a\u6210 Resource \u800c\u4e0d\u662f Database (\u4f60\u611f\u89ba\u4e0d\u5230\u4f60\u5728\u7528Web APIs :p)\u3002<\/p>\n

\u8b93\u6211\u5011\u4f86\u8a66\u73a9\u770b\u770b\u5427! \u56e0\u70ba\u4e0d\u53ea\u9023 Rails 1.2 \u9084\u6c92 (\u6700\u5f8c\u95dc\u982d\u62c9\u51fa<\/a> :p)\uff0c\u9023 Edge Rails \u7248\u90fd\u9084\u6c92\u6709\uff0c\u6240\u4ee5\u5fc5\u9808\u76f4\u63a5\u7528 svn co<\/p>\n

svn co dev.rubyonrails.org\/svn\/rails\/trunk<\/a> vendor\/rails<\/p><\/blockquote>\n

\u6211\u5011\u7528 irb \u4f86\u958b\u59cb\u5be6\u9a57\u5427~<\/p>\n

$ irb
\n> require ‘vendor\/rails\/activesupport\/lib\/active_support’
\n> require ‘vendor\/rails\/activeresource\/lib\/active_resource’<\/p><\/blockquote>\n

\u4e0a\u56de<\/a>\u4e5f\u63d0\u5230 beast \u662f\u500b\u7528 RESTful \u958b\u767c\u7684\u8a0e\u8ad6\u5340\u8edf\u9ad4\uff0c\u6240\u4ee5\u6211\u5011\u7528 beast \u4f86\u505a\u64cd\u4f5c\u5c0d\u8c61:<\/p>\n

class User < BeastResource
\nend<\/p>\n

class Forum < BeastResource
\nend<\/p>\n

class Topic < BeastResource
\nsite << ‘\/forums\/:forum_id’
\nend<\/p>\n

class Post < BeastResource
\nsite << ‘\/forums\/:forum_id\/topics\/:topic_id’
\nend<\/p><\/blockquote>\n

\u81f3\u6b64 Web APIs \u5c31\u929c\u63a5\u8d77\u4f86\u4e86\uff0c\u975e\u5e38\u7c21\u55ae\u3002\u63a5\u4e0b\u4f86\u5c31\u662f\u795e\u5947\u7684\u5730\u65b9\u4e86\uff0c\u6211\u5011\u4f7f\u7528\u7684\u65b9\u5f0f\u5c31\u50cf\u64cd\u4f5c ActiveRecord \u4e00\u6a23:<\/p>\n

\u8b80\u53d6\u6587\u7ae0:<\/p>\n

<\/blockquote>\n

f = Forum.find 1
\n# notice that since Topic has a prefix, we must pass the forum_id.
\n# This is so it can make the request to \/forums\/1\/topics\/1.xml
\nt = Topic.find 1, :forum_id => f.id
\np = Post.find 1, :forum_id => f.id, :topic_id => t.id
\nu = User.find p.us<\/a>er_id<\/p><\/blockquote>\n

\u751a\u81f3\u662f\u5f35\u8cbc\u6587\u7ae0:<\/p>\n

forums = Forum.find :all
\ntesting = forums.detect { |f| f.name<\/a> == ‘Testing’ }
\n# initialize takes two parameters in ActiveResource. One for the model parameters, and one for the prefix parameters.
\ntopic = Topic.new({
\n:title => ‘Testing out ARes’,
\n:body => ‘Testing 1, 2, 3!’},
\n{ :forum_id => testing.id })<\/p><\/blockquote>\n

\u958b\u59cb\u9a5a\u5606 RESTful \u7684\u5a01\u529b\u4e86\u55ce? \u5b83\u5c07 Rails action \u7684 create,find,update,destroy \u5c0d\u61c9\u5230 HTTP method \u7684 POST,GET,PUT,DELETE\uff0c\u7576\u7136\u6700\u5f8c\u53c8\u8b8a\u6210 SQL \u7684\u00a0INSERT,SELECT,UPDATE,DELETE\uff0c\u9019\u5c31\u662f Resources on Rails \u7684 CRUD \u54f2\u5b78\u3002<\/p>\n\n\n\n\n\n\n\n
Model request<\/th>\nHttp REST<\/span> operation<\/th>\nrequest body<\/th>\nRequest URI<\/span><\/th>\nResponse<\/th>\n<\/tr>\n
find(id<\/em>)<\/td>\nGET<\/code><\/td>\nN\/A<\/em><\/td>\n\/people\/id<\/em>.xml<\/td>\n\n
   name <\/code><\/pre>\n<\/td>\n<\/tr>\n
save (update)<\/td>\nPUT<\/code><\/td>\n\n
   name <\/code><\/pre>\n<\/td>\n
\/people\/id<\/em>.xml<\/td>\nStatus: 200 OK<\/code><\/td>\n<\/tr>\n
save (create)<\/td>\nPOST<\/code><\/td>\n\n
   name <\/code><\/pre>\n<\/td>\n
\/people<\/td>\nLocation: http:\/\/x\/people\/id.xml<\/code><\/td>\n<\/tr>\n
destroy<\/td>\nDELETE<\/code><\/td>\nN\/A<\/em><\/td>\n\/people\/id<\/em>.xml<\/td>\nStatus: 200 OK<\/code><\/td>\n<\/tr>\n
list<\/td>\nGET<\/code><\/td>\nN\/A<\/em><\/td>\n\/people<\/td>\n\n
        name    <\/code><\/pre>\n<\/td>\n<\/tr>\n<\/table>\n
\u5176\u4e2d\u50b3\u8f38\u683c\u5f0f\u4f7f\u7528XML\uff0c\u4e0d\u904e\u4f60\u4e5f\u4e0d\u7528\u8cbb\u5fc3\u6216\u770b\u5230XML\uff0c\u56e0\u70ba ARes \u4e5f\u90fd\u8655\u7406\u597d\u4e86\u3002\u800c\u5728 server-side \u90e8\u5206\uff0cRails \u7576\u7136\u4e5f\u4e0d\u7528\u4f60\u624b\u52d5\u751f\u6210XML\uff0c\u65b0\u7248 model \u90fd\u53ef\u4ee5\u7528 .to_xml \u81ea\u52d5\u751f\u6210 XML \u683c\u5f0f\uff0c\u6240\u4ee5\u53ea\u9700\u5728 Controller \u4e2d\u5beb\u597d\u5373\u53ef\uff0c\u4f8b\u5982:<\/p>\n
def who_bought
\n@product = Product.find(params[:id])
\n@orders = @product.orders
\nrespond_to do |accepts|
\n\u00a0accepts.html
\n\u00a0accepts.xml { render :xml => @product.to_xml(:include => :orders) }
\nend
\n<\/strong>end<\/p><\/blockquote>\n
Rails 1.2 \u9084\u53ea\u662f\u6253\u958b REStful \u6642\u4ee3\u7684\u5e8f\u5e55\uff0c\u975e\u5e38\u671f\u5f85 ActiveResource \u7684\u6b63\u5f0f\u63a8\u51fa\uff0c\u4ee5\u5f8c\u6211\u6703\u6301\u7e8c\u95dc\u6ce8 ActiveResource \u958b\u767c\u52d5\u614b\u3002<\/p>\n
\u53c3\u8003\u8cc7\u6599:<\/p>\n