class Tour < ActiveRecord::Base
  has_many :customers, :through => :tour_customers
  has_many :tour_customers
  accepts_nested_attributes_for :customers,
                                :allow_destroy => false

  def update_customers(customers_attributes)
    new_customers = []
    customers_attributes.each_pair do |key, value|
      new_customers << Customer.find_or_create_by_name(value['name']) unless (!value['_delete'].blank? || !value['_destroy'].blank?)
    end
    self.customers = new_customers
    save
  end

end

# POST /tours
# POST /tours.xml
def create
  customers = params[:tour][:customers_attributes]
  params[:tour][:customers_attributes] = {}

  @tour = Tour.new(params[:tour])

  respond_to do |format|
    if @tour.save && @tour.update_customers(customers)
      flash[:notice] = 'Tour was successfully created.'
      format.html { redirect_to(@tour) }
      format.xml  { render :xml => @tour, :status => :created, :location => @tour }
    else
      format.html { render :action => "new" }
      format.xml  { render :xml => @tour.errors, :status => :unprocessable_entity }
    end
  end
end

# PUT /tours/1
# PUT /tours/1.xml
def update
  customers = params[:tour][:customers_attributes]
  params[:tour][:customers_attributes] = {}

  @tour = Tour.find(params[:id])

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