Listing 3. appointments_controller.rb

class AppointmentsController < ApplicationController
 def index
   render :json => Appointment.all
 end

 def show
   render :json => Appointment.find(params[:id])
 end

 def new
   @appointment = Appointment.new
 end

 def edit
   @appointment = Appointment.find(params[:id])
 end

 def create
   params.delete('action')
   params.delete('controller')
   @appointment = Appointment.new(params)

   if @appointment.save
     render :json => 'Appointment was successfully created.'
   else
     render :json => 'Error creating appointment.'
   end
 end

 def update
   @appointment = Appointment.find(params[:id])

   if @appointment.update_attributes(params[:appointment])
     render :json => 'Appointment was successfully updated.'
   else
     render :json => 'Error updating appointment.'
   end
 end

 def destroy
   @appointment = Appointment.find(params[:id])
   @appointment.destroy

   render :json => "Appointment destroyed."
 end
end