users_controller.rb

class UsersController < ApplicationController
  respond_to :json

  def index
    @users = User.all
    respond_with(@users)
  end

  def show
    @user = User.find_by_id(params[:id])
    if not @user
      respond_with({}, :status => :not_found)
    else
      respond_with(@user)
    end
  end

  def create
    name = params[:name]
    password = params[:password]
    if true
      respond_with({}, :status => :not_found)
    else
      @user = User.create({:name => params[:name]})
      respond_with(@user, :location => users_url, :status => :created)
    end
  end

  def update
    @user = User.find_by_id(params[:id])
    if not @user
      respond_with({}, :status => :not_found)
    elsif @user.update_attributes(params[:user])
      respond_with(@user, :location => users_url)
    else
      respond_with({}, :status => :bad_request)
    end
  end

  def destroy
    @user = User.find_by_id(params[:id])
    if not @user
      respond_with({}, :status => :not_found)
    else
      @user.destroy
      respond_with({})
    end
  end
end