Jester: JavaScript Client for REST

最新推荐文章于 2024-11-05 22:57:09 发布

最新推荐文章于 2024-11-05 22:57:09 发布 · 125 阅读

文章标签：

#REST #JavaScript #XML #prototype #Web #ViewUI

Ajax/RIA 专栏收录该内容

32 篇文章

订阅专栏

Jester是一款基于Prototype的JavaScript库，用于简化Ruby on Rails RESTful Web服务的客户端操作。其API设计模仿ActiveResource，提供了查找、创建、更新及删除等操作的支持。本文通过示例代码展示了如何使用Jester进行数据的检索、新建、验证错误处理等功能。

[url=http://giantrobots.thoughtbot.com/2007/4/2/jester-javascriptian-rest]Jester: JavaScriptian REST[/url]介绍了Jester这个JavaScript库，它基于Prototype，用来做RubyonRails的RESTful
Web Service的JavaScript客户端，而且api基本模仿了ActiveResource，所以用起来很简单。

服务端:
[code]
class UsersController < ApplicationController
# GET /users.xml
def index
@users = User.find(:all)
respond_to do |format|
format.xml { render :xml => @users.to_xml(:include => :posts) }
end
end

# GET /users/1.xml
def show
@user = User.find(params[:id])
respond_to do |format|
format.xml { render :xml => @user.to_xml(:include => :posts) }
end
end

# POST /users.xml
def create
@user = User.new(params[:user])
respond_to do |format|
if @user.save
format.xml { head :created, :location => user_url(@user) }
else
format.xml { render :xml => @user.errors.to_xml }
end
end
end

# PUT /users/1.xml
def update
@user = User.find(params[:id])
respond_to do |format|
if @user.update_attributes(params[:user])
format.xml { head :ok }
else
format.xml { render :xml => @user.errors.to_xml }
end
end
end

# DELETE /users/1.xml
def destroy
@user = User.find(params[:id])
@user.destroy
respond_to do |format|
format.xml { head :ok }
end
end
end
[/code]

客户端:
[code]
>>> Base.model("User")
>>> eric = User.find(1)
GET http://localhost:3000/users/1.xml
>>> eric.attributes
["active", "email", "id", "name"]

>>> chad = User.build({email: "cpytel@thoughtbot.com", name: "Chad Pytel"})
>>> chad.save()
POST http://localhost:3000/users.xml

>>> jared = User.build({name: "", email: ""})
>>> jared.save()
POST http://localhost:3000/users.xml
>>> jared.errors
["Name can't be blank", "Email can't be blank"]
>>> jared.valid()
false

// ...
[/code]