_fields.html.erb

<div class="field">
  <%= f.label :program_name %><br />
  <%= f.text_field :program_name %>
</div>
<div class="field">
  <%= f.label :day %><br />
  <%= f.text_field :day %>
</div>
<div class="field">
  <%= f.label :price %><br />
  <%= f.text_field :price %>
</div>
<div class="field">
  <%= f.label :status %><br />
  <%= f.text_field :status %>
</div>
<div class="field">
  <%= f.label :dates %><br />
  <%= f.text_field :dates %>
</div>
<div class="field">
  <%= f.label :max_registrants %><br />
  <%= f.text_field :max_registrants %>
</div>

after_school_program.rb

# == Schema Information
#
# Table name: after_school_programs
#
#  id              :integer         not null, primary key
#  day             :string(255)
#  program_name    :string(255)
#  price           :string(255)
#  status          :string(255)
#  dates           :string(255)
#  max_registrants :integer
#  created_at      :datetime        not null
#  updated_at      :datetime        not null
#

class AfterSchoolProgram < ActiveRecord::Base
  attr_accessible :day,
                  :program_name,
                  :price,
                  :status,
                  :dates,
                  :max_registrants
  
end

after_school_programs_controller.rb

class AfterSchoolProgramsController < ApplicationController
  before_filter :admin_user
  
  def new
    @program = AfterSchoolProgram.new
  end

  def show
    # @program = AfterSchoolProgram.find(params[:id])
  end

  def destroy
  end

  def edit
  end
  
  def index
    @programs = AfterSchoolProgram.all
  end
  
  def create
    
    @program = AfterSchoolProgram.new(params[:program])
    puts "PARAMS before SAVE: #{params[:program].inspect}"
    if @program.save
      puts "PARAMS after SAVE: #{params[:program]}"
      flash[:success] = "Your program has been created!"
      redirect_to after_school_programs_path
    else
      render 'new'
    end
  end
end

console output

Started POST "/after_school_programs" for 127.0.0.1 at 2012-03-02 01:49:01 -0500
Processing by AfterSchoolProgramsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"zp1MrItSNfZ2CKAOerxB4iBOdxU7CjBMVMskuV9VAbM=", "after_school_program"=>{"program_name"=>"test", "day"=>"test", "price"=>"test", "status"=>"test", "dates"=>"test", "max_registrants"=>"test"}, "commit"=>"Create program"}
  User Load (0.2ms)  SELECT "users".* FROM "users" WHERE "users"."remember_token" = 'i64J_AN1JzU1DtIhzxK3bQ' LIMIT 1
   (0.0ms)  begin transaction
  SQL (69.7ms)  INSERT INTO "after_school_programs" ("created_at", "dates", "day", "max_registrants", "price", "program_name", "status", "updated_at") VALUES (?, ?, ?, ?, ?, ?, ?, ?)  [["created_at", Fri, 02 Mar 2012 06:49:01 UTC +00:00], ["dates", nil], ["day", nil], ["max_registrants", nil], ["price", nil], ["program_name", nil], ["status", nil], ["updated_at", Fri, 02 Mar 2012 06:49:01 UTC +00:00]]
   (18.3ms)  commit transaction
Redirected to http://localhost:3000/after_school_programs
Completed 302 Found in 91ms (ActiveRecord: 88.2ms)

new.html.erb

<% provide :title, 'After School Programs Create Form' %>
<h2>Create programs here</h2>
<%= form_for(@program) do |f| %>
<%= render 'fields', f: f %>
  <div class="actions">
    <%= f.submit "Create program" %>
  </div>
<% end %>