Yax

  def create
    @ticket = Ticket.new(params[:ticket])
    @category = Category.find(@ticket.category_id)
    # if (@category.tickets << @ticket)
      flash[:notice] = "Ticket created."
      redirect_to(@ticket)
    else
      render :action => "new"
    end
  en

Yax

  def create
    @ticket = Ticket.new(params[:ticket])
    @category = Category.find(@ticket.category_id)
    # if (@category.tickets << @ticket)
      flash[:notice] = "Ticket created."
      redirect_to(@ticket)
    else
      render :action => "new"
    end
  en

Yax

  def create
    @ticket = Ticket.new(params[:ticket])
    @category = Category.find(@ticket.category_id)
    # if (@category.tickets << @ticket)
      flash[:notice] = "Ticket created."
      redirect_to(@ticket)
    else
      render :action => "new"
    end
  end

Yax

  def create
    @ticket = Ticket.new(params[:ticket])
    @category = Category.find(@ticket.category_id)
    if (@category.tickets << @ticket)
      flash[:notice] = "Ticket created."
      redirect_to(@ticket)
    else
      render :action => "new"
    end
  end

Yax

<% form_for(@ticket) do |f| %>
  <%= f.error_messages %>

  <p>
  <%= f.label :category_id %><br />
  <%= f.select(:category_id, @categories.collect { |c| [ c.name, c.id ] }) %>

Yax

class Ticket < ActiveRecord::Base
  # t.integer :category_id
  # t.string :employee_name
  # t.integer :order_number
  # t.string :email
  
  belongs_to :category
  has_many :messages

  validates_associated :category

Yax

class Ticket < ActiveRecord::Base
  # t.integer :category_id
  # t.string :employee_name
  # t.integer :order_number
  # t.string :email
  
  belongs_to :category
  has_many :messages

  validates_associated :category

Yax

  def create
    if @ticket.save
      flash[:notice] = "ticket created."
      redirect_to(@ticket)
    else
      render :action => "new"
    end
  end

  def validate

Yax

  def validate
    errors.add(:category_id, "is not a valid category") if self.category.nil?
  end

Yax

  <% for ticket in @tickets %>
    <tr>
      <td><%=h ticket.category.name %></td>
      <td><%=h ticket.employee_name %></td>
      <td><%=h ticket.email %></td>
      <td><%=h ticket.order_number %></td>
      <td><%= link_to 'Pokaż', ticket %></td>
      <td><%= link_to 'Edytuj', edit_ticket_path(ticket) %></td>
      <td><%= link_to 'Usuń', ticket, :confirm => 'Jesteś pewny?', :method => :delete %></td>
    </tr>