REST With Rails Part 1 | Ruby Zone. We Recommend These Resources In this first part I will show you how to build RESTful services using Rails. REST is an architectural style modeled after the Web. Basically, it codifies the principles and methods behind Web servers that lead to the creation of the largest distributed system ever built. For some people "distributed" is about the plumbing – sending messages to remote servers – we're also thinking of the way large scale systems emerge from smaller services, built independently by different groups of people—distributed in design and in implementation. When we think of REST, we think of following those very same principles. This article is based on chapter 5 from Ruby in Practice by Jeremy McAnally and Assaf Arkin.
Besides being the largest collection of useless information, personal opinions, and short video clips, the Web is also a large scale system built from resources. We're building a task manager which our employees can use to manage their day to day tasks. 4.end 5. 6.end. Rest With Rails Part 2 : Serving XML, JSON and Atom | Ruby Zone. We Recommend These Resources In part 1 of REST with Rails we had an introduction to creating RestFull services with Rails. In this article we will be looking into serving this content using different representations including XML, JSON and Atom. Every resource has a representation, in fact, a given resource can have more than one representation. Users accessing our task manager will want to see an HTML page listing all their tasks, or they may choose to use a feed reader to subscribe to their task list; feed readers expect an Atom or RSS document.
If we're writing an application we would want to see the tasks list as an XML document, or JSON object, or perhaps pull it into a calendar application in the form of an iCal list of todo and events. This article is based on chapter 5 from Ruby in Practice by Jeremy McAnally and Assaf Arkin. One reason we recommend Rails for building Web services is the ease of adding different representations for the same underlying resource. 1.def index 2. 3.end. JSON + Ajax + Ruby on Rails. While I would love to be using E4X, it isn't viable yet. So JSON it is. Here is how I got a simple JSON example working with Ruby on Rails over Ajax[1]. I'll assume you have a Rails project up and running with at least one model, controller, views etc. First you want to install the JSON gem; gem install ruby-json Then go into your model's code and put in the following require; require 'json/objects'.
While still in the model add a to_json method with the following code: result = Hash.newself.class.content_columns.each do |column| result[column.name.to_sym] = self.send(column.name)end result.to_json Now off to the controller file you go. Def jsonbit @link = Link.find(params[:id]) @headers["Content-Type"] = "text/plain; charset=utf-8" render_text @link.to_jsonend So in that what we do is fire off a call to the jsonbit method with a model id and it returns JSON which is evaluated by JavaScript and one of the properties is alerted out. Exemple avec jQuery, JSON et Ruby on Rails 3. Exemple de base Json, JavaScript Object Notation, et un format de données couramment utilisé dans les applications web, et est largement implémenté dans tout les langages courant. Un petit aperçu de l’usage qu’on peut avoir de json avec Ruby on Rails . Rails 2.x On trouve souvent la solution suivante : app/controllers/users_controller.rb def show @user = User. find ( params [ :id ] ) respond_to do | format | format . html end Added that render :json will automatically call .to_json unless it’s being passed a string [David Heinemeier Hansson]. — actionpack/CHANGELOG On peut donc simplifier la ligne correspondante au format json par : Rails 3 Bien que ces syntaxe fonctionne toujours, dans Rails 3 elles ont un peu changé.
Respond_to :html , :xml , :json def index @users = User. all respond_with ( @users ) respond_with ( @user ) def new @user = User. new localhost:3000/users.json localhost:3000/users/1.json Autre approche L’idée est de voir une autre utilisation de json. Le html Application Test de JSON User 1. Create JSON data from a Hash using Ruby - Some code from jrobertson. Json.