Screencast: Rails 3 Active Model

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Resourcen:

• Episode 193: Tableless Model
• activemodel source
• Full episode source code

Quellcode:

[ruby]
# models/message.rb
class Message
include ActiveModel::Validations
include ActiveModel::Conversion
extend ActiveModel::Naming

attr_accessor :name, :email, :content

validates_presence_of :name
validates_format_of :email, :with => /^[-a-z0-9_+.]+@([-a-z0-9]+.)+[a-z0-9]{2,4}$/i
validates_length_of :content, :maximum => 500

def initialize(attributes = {})
attributes.each do |name, value|
send("#{name}=", value)
end
end

def persisted?
false
end
end

# messages_controller.rb
def create
@message = Message.new(params[:message])
if @message.valid?
# TODO send message here
flash[:notice] = "Message sent! Thank you for conacting us."
redirect_to root_url
else
render :action => ’new‘
end
end
[/ruby]