### JOB - new.html.erb

<% form_for(@job) do |f| %>
  <%= f.error_messages %>

  <p>
    <% Category.all.each do |category| %>
    <label><%= f.radio_button :category_id, category.id %> <%=h category.name.titleize %></label>
    <% end -%>
  </p>
  <p>
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </p>
  <p>
    <%= f.submit 'Create' %>
  </p>
<% end %>
<%= link_to 'Back', jobs_path %>


#### JOB - job.rb (model file)
class Job < ActiveRecord::Base
  belongs_to :category
end


#### JOB - category.rb (model file)
class Category < ActiveRecord::Base
  has_many :jobs
end


#### JOB - jobs_controller.rb (controller file)
class JobsController < ApplicationController
  def index
  @category = Category.new
    @jobs = Job.all

    respond_to do |format|
      format.html # index.html.erb
      format.xml  { render :xml => @jobs }
    end
  end

  def show
    @job = Job.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml  { render :xml => @job }
    end
  end

  def new
    @job = Job.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @job }
    end
  end

  def edit
    @job = Job.find(params[:id])
  end

  def create
    @job = Job.new(params[:job])

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

  def update
    @job = Job.find(params[:id])

    respond_to do |format|
      if @job.update_attributes(params[:job])
        format.html { redirect_to(@job, :notice => 'Job was successfully updated.') }
        format.xml  { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml  { render :xml => @job.errors, :status => :unprocessable_entity }
      end
    end
  end

  def destroy
    @job = Job.find(params[:id])
    @job.destroy

    respond_to do |format|
      format.html { redirect_to(jobs_url) }
      format.xml  { head :ok }
    end
  end
end