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sudo gem install validatable

class Contact
  include Validatable
 
  attr_accessor :name, :email, :phone, :message
 
  validates_presence_of :name, :message => "Name is required."
  validates_format_of :email, :with => /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i,
    :message => "Email is not valid."
  validates_format_of :phone, :with => /^[0-9]{3,3}-[0-9]{3,3}-[0-9]{4,4}$/,
    :message => "Phone number is not valid (xxx-xxx-xxxx)."
 
  def phone=(phone)
    @phone = phone.gsub(/[^0-9]/, "").gsub(/^([0-9]{0,3})([0-9]{0,3})([0-9]{0,})$/) do |match|
      tmp = ""
      tmp += $1 if $1.size > 0
      tmp += "-" + $2 if $2.size > 0
      tmp += "-" + $3 if $3.size > 0
      tmp
    end
  end  
 
  def deliver
    if valid?
      Notification.deliver_contact(self)
    else
      false
    end
  end
end

>> c = Contact.new
=> #<Contact:0x218e974>
>> c.name = "Chris"
=> "Chris"
>> c.valid?
=> false
>> c.errors.full_messages
=> ["Email Email is not valid.", "Phone Phone number is not valid (xxx-xxx-xxxx)."]
>> c.email = "chris@techcfl.com"
=> "chris@techcfl.com"
>> c.phone = "1234567890"
=> "1234567890"
>> c.valid?
=> true
>> c.name
=> "Chris"
>> c.email
=> "chris@techcfl.com"
>> c.phone
=> "123-456-7890"
>> c.message = "Stillwater? Wtf is that?"
=> "Stillwater? Wtf is that?"

def contact
  @contact = Contact.new
  if request.post?
    @contact.name = params[:name]
    @contact.email = params[:email]
    @contact.phone = params[:phone]
    @contact.ticker = params[:ticker]
    if @contact.valid?
      @contact.deliver
      flash[:notice] = "Thank you for you interest."
      redirect_to root_url
    end
  end
end

<% form_tag contact_path do %>
  <table>
    <tr>
      <td>
        <label for="name">Name:</label>
      </td>
      <td>
        <%= text_field_tag "name", @contact.name %>
        <%= error_messages_for_attribute(@contact, :name) %>
      </td>
    </tr>
    <tr>
      <td>
        <label for="email">Email:</label>
      </td>
      <td>
        <%= text_field_tag "email", @contact.email %>
        <%= error_messages_for_attribute(@contact, :email) %>
      </td>
    </tr>
    <tr>
      <td>
        <label for="phone">Phone:</label>
      </td>
      <td>
        <%= text_field_tag "phone", @contact.phone %>
        <%= error_messages_for_attribute(@contact, :phone) %>
      </td>
    </tr>
    <tr>
      <td>
        <label for="message">Message:</label>
      </td>
      <td>
        <%= text_area_tag "message", @contact.message %>
        <%= error_messages_for_attribute(@contact, :message) %>
      </td>
    </tr>
    <tr>
      <td colspan="2">
        <%= submit_tag "Submit" %>
      </td>
    </tr>
  </table>
<% end %>

def error_messages_for_attribute(object, attribute)
  if object.errors.on(attribute)
    html = '<small class="errors"><ul>'
    object.errors.on(attribute).each do |message|
      html += "<li>" + message + "</li>"
    end
    html += "</ul></small>"
  end
end