Model guests

app/controllers/dinners_controller.rb

@@ -32,6 +32,7 @@ def update
   private
 
   def dinner_params
-    params.require(:dinner).permit(:name, :date, :time, :location, :email, :unique_url)
+    params.require(:dinner).permit(:name, :date, :time, :location, :email, :unique_url, guests_attributes:
+                                  [:name, :id])
   end
 end

app/helpers/form_helper.rb

@@ -0,0 +1,6 @@
+module FormHelper
+  def dinner_setup(dinner)
+    dinner.guests.build
+    dinner
+  end
+end

app/models/course.rb

@@ -1,3 +1,4 @@
 class Course < ActiveRecord::Base
   belongs_to :dinner
+  belongs_to :guest
 end

app/models/dinner.rb

@@ -6,6 +6,9 @@ class Dinner < ActiveRecord::Base
   validates :location, presence: true
 
   has_many :courses
+  has_many :guests
+
+  accepts_nested_attributes_for :guests, reject_if: lambda { |a| a[:name].blank? }
 
   attr_readonly :email, :name, :date, :time, :location
 

app/models/guest.rb

@@ -1,2 +1,6 @@
 class Guest < ActiveRecord::Base
+  validates_uniqueness_of :name, scope: :dinner_id
+
+  has_many :courses
+  belongs_to :dinner
 end

app/views/dinners/edit.html.erb

@@ -2,7 +2,7 @@
 
 <h1>Dinner page</h1>
 
-<%= form_for @dinner do |f| %>
+<%= form_for dinner_setup(@dinner) do |f| %>
   <%= f.label :dinner %>:
   <%= f.text_field :name, id: "dinner", readonly: true %><br />
 
@@ -15,5 +15,10 @@
   <%= f.label :Location %>:
   <%= f.text_field :location, id: "location", readonly: true %><br />
 
+    <%= f.fields_for :guests do |g| %>
+      <%= g.label :Guest %>:
+      <%= g.text_field :name, id: "name" %><br />
+    <% end %>
+
   <%= f.submit "Edit Dinner" %>
 <% end %>

db/migrate/20150308183337_add_dinner_ref_to_guests.rb

@@ -0,0 +1,6 @@
+class AddDinnerRefToGuests < ActiveRecord::Migration
+  def change
+    add_reference :guests, :dinner, index: true
+    add_foreign_key :guests, :dinners
+  end
+end

db/migrate/20150308183428_add_course_ref_to_guests.rb

@@ -0,0 +1,6 @@
+class AddCourseRefToGuests < ActiveRecord::Migration
+  def change
+    add_reference :guests, :course, index: true
+    add_foreign_key :guests, :courses
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150308181559) do
+ActiveRecord::Schema.define(version: 20150308183428) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -38,7 +38,14 @@
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.string   "name"
+    t.integer  "dinner_id"
+    t.integer  "course_id"
   end
 
+  add_index "guests", ["course_id"], name: "index_guests_on_course_id", using: :btree
+  add_index "guests", ["dinner_id"], name: "index_guests_on_dinner_id", using: :btree
+
   add_foreign_key "courses", "dinners"
+  add_foreign_key "guests", "courses"
+  add_foreign_key "guests", "dinners"
 end