Rails 3.0.9 model/controller ready to use with Backbonejs

comments.md

Do not include root in json

Add ActiveRecord::Base.include_root_in_json = false in an initializer (or config/environment.rb)

Model

Model should use attr_accessible in order to filter the parameter correctly In the example we use the model Task which only accessible attribute : name

Controller

Html

Work as usual (cf tests)

JSON

It should use params to create a new model, it should NOT use params[:model_name] (default when using scaffolding) (cf tests) We change params[:task] to params in the controller create method

task.rb

class Task < ActiveRecord::Base
  attr_accessible :name
end

tasks_controller.rb

class TasksController < ApplicationController
  # ...

  # POST /tasks
  # POST /tasks.xml
  def create
    respond_to do |format|
      format.html { @task = Task.new(params[:task])}
      format.xml  { @task = Task.new(params[:task])}
      format.json { @task = Task.new(params)}
    end
    # Create a new task accroding to the type

    respond_to do |format|
      if @task.save
        format.html { redirect_to(@task, :notice => 'Task was successfully created.') }
        format.xml  { render :xml => @task, :status => :created, :location => @task }
        format.json  { render :json => @task, :status => :created, :location => @task }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @task.errors, :status => :unprocessable_entity }
        format.json  { render :json => @task.errors, :status => :unprocessable_entity }
      end
    end
  end

  # ...
end

tasks_controller_test.rb

require 'test_helper'

class TasksControllerTest < ActionController::TestCase
  # ...

  test "html should create task" do
    the_task_name = "Super task"
    assert_difference('Task.count') do
      post :create, :format => :html, :task => {:name => the_task_name}
    end
    assert_equal the_task_name, Task.last.name

    assert_redirected_to task_path(assigns(:task))
  end

  test "json should create task" do
    the_task_name = "Super task"
    assert_difference('Task.count') do
      post :create, :format => :json, :name => the_task_name
    end

    assert_equal the_task_name, Task.last.name
  end

  # ...
end