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Resourcen:

• Nifty Generators
• Tableless Model in Rails
• Episode 61: Sending Email
• Full episode source code

Quellcode:

script/generate nifty_scaffold recommendation from_email:string to_email:string article_id:integer message:text new create
rake db:migrate
rake db:rollback
rm db/migrate/*_recommendations.rb

# models/recommendation.rb
class Recommendation < ActiveRecord::Base
  def self.columns() @columns ||= []; end

  def self.column(name, sql_type = nil, default = nil, null = true)
    columns << ActiveRecord::ConnectionAdapters::Column.new(name.to_s, default, sql_type.to_s, null)
  end

  column :from_email, :string
  column :to_email, :string
  column :article_id, :integer
  column :message, :text

  validates_format_of :from_email, :to_email, :with => /^[-a-z0-9_+\.]+\@([-a-z0-9]+\.)+[a-z0-9]{2,4}$/i
  validates_length_of :message, :maximum => 500

  belongs_to :article
end

# recommendations_controller.rb
def new
  @recommendation = Recommendation.new(:article_id => params[:article_id])
end

def create
  @recommendation = Recommendation.new(params[:recommendation])
  if @recommendation.valid?
    # send email
    flash[:notice] = "Successfully created recommendation."
    redirect_to root_url
  else
    render :action => 'new'
  end
end