Proper associations, testing both ways

app/models/farm.rb

@@ -1,24 +1,26 @@
 # == Schema Information
-# Schema version: 20100618185553
+# Schema version: 20100618200803
 #
 # Table name: farms
 #
-#  id         :integer         not null, primary key
-#  name       :string(255)
-#  organic    :boolean
-#  latitude   :float
-#  longitude  :float
-#  altitude   :float
-#  created_at :datetime
-#  updated_at :datetime
+#  id                   :integer         not null, primary key
+#  name                 :string(255)
+#  organic              :boolean
+#  latitude             :float
+#  longitude            :float
+#  altitude             :float
+#  created_at           :datetime
+#  updated_at           :datetime
+#  organic_certifier_id :integer
+#  farmer_id            :integer
 #
 
 class Farm < ActiveRecord::Base
   attr_accessible :name, :organic, :latitude, :longitude, :altitude
-  
+
   validates_presence_of :name, :latitude, :longitude, :altitude
   validates_inclusion_of :organic, :in => [true, false]  
-  
+
   belongs_to :organic_certifier
   belongs_to :farmer
 end

app/models/farmer.rb

@@ -1,18 +1,20 @@
 # == Schema Information
-# Schema version: 20100618185553
+# Schema version: 20100618200803
 #
 # Table name: farmers
 #
-#  id         :integer         not null, primary key
-#  name       :string(255)
-#  created_at :datetime
-#  updated_at :datetime
+#  id                 :integer         not null, primary key
+#  name               :string(255)
+#  created_at         :datetime
+#  updated_at         :datetime
+#  washing_station_id :integer
 #
 
 class Farmer < ActiveRecord::Base
   attr_accessible :name
 
   validates_presence_of :name
 
+  has_many :farms
   belongs_to :washing_station
 end

app/models/organic_certifier.rb

@@ -14,4 +14,5 @@ class OrganicCertifier < ActiveRecord::Base
   attr_accessible :name, :code
 
   validates_presence_of :name, :code
+  has_many :farms
 end

app/models/washing_station.rb

@@ -14,4 +14,5 @@ class WashingStation < ActiveRecord::Base
   attr_accessible :name, :code
 
   validates_presence_of :name, :code
+  has_many :farmers
 end

db/migrate/20100618200656_add_washing_station_id_to_farmer.rb

@@ -0,0 +1,10 @@
+class AddWashingStationIdToFarmer < ActiveRecord::Migration
+  def self.up
+    add_column :farmers, :washing_station_id, :integer
+    add_index :farmers, :washing_station_id
+  end
+
+  def self.down
+    remove_column :farmers, :washing_station_id
+  end
+end

db/migrate/20100618200737_add_organic_certifier_id_to_farm.rb

@@ -0,0 +1,10 @@
+class AddOrganicCertifierIdToFarm < ActiveRecord::Migration
+  def self.up
+    add_column :farms, :organic_certifier_id, :integer
+    add_index :farms, :organic_certifier_id
+  end
+
+  def self.down
+    remove_column :farms, :organic_certifier_id
+  end
+end

db/migrate/20100618200803_add_farmer_id_to_farm.rb

@@ -0,0 +1,10 @@
+class AddFarmerIdToFarm < ActiveRecord::Migration
+  def self.up
+    add_column :farms, :farmer_id, :integer
+    add_index :farms, :farmer_id
+  end
+
+  def self.down
+    remove_column :farms, :farmer_id
+  end
+end

db/schema.rb

@@ -9,14 +9,17 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20100618185553) do
+ActiveRecord::Schema.define(:version => 20100618200803) do
 
   create_table "farmers", :force => true do |t|
     t.string   "name"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.integer  "washing_station_id"
   end
 
+  add_index "farmers", ["washing_station_id"], :name => "index_farmers_on_washing_station_id"
+
   create_table "farms", :force => true do |t|
     t.string   "name"
     t.boolean  "organic"
@@ -25,8 +28,13 @@
     t.float    "altitude"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.integer  "organic_certifier_id"
+    t.integer  "farmer_id"
   end
 
+  add_index "farms", ["farmer_id"], :name => "index_farms_on_farmer_id"
+  add_index "farms", ["organic_certifier_id"], :name => "index_farms_on_organic_certifier_id"
+
   create_table "organic_certifiers", :force => true do |t|
     t.string   "name"
     t.string   "code"

spec/factories.rb

@@ -1,8 +1,14 @@
-Factory.define :farmer do |farmer|
-  farmer.name       "A Farmer"
-end
-
 Factory.define :washing_station do |washing_station|
   washing_station.name      "Washing Station 1"
   washing_station.code      "abcabc123"
+end
+
+Factory.define :organic_certifier do |organic_certifier|
+  organic_certifier.name      "Organic Certifier 1"
+  organic_certifier.code      "123abced"
+end
+
+Factory.define :farmer do |farmer|
+  farmer.name       "A Farmer"
+  farmer.association :washing_station
 end

spec/fixtures/farmers.yml

@@ -1,12 +1,13 @@
 # == Schema Information
-# Schema version: 20100618185553
+# Schema version: 20100618200803
 #
 # Table name: farmers
 #
-#  id         :integer         not null, primary key
-#  name       :string(255)
-#  created_at :datetime
-#  updated_at :datetime
+#  id                 :integer         not null, primary key
+#  name               :string(255)
+#  created_at         :datetime
+#  updated_at         :datetime
+#  washing_station_id :integer
 #
 
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html

spec/fixtures/farms.yml

@@ -1,16 +1,18 @@
 # == Schema Information
-# Schema version: 20100618185553
+# Schema version: 20100618200803
 #
 # Table name: farms
 #
-#  id         :integer         not null, primary key
-#  name       :string(255)
-#  organic    :boolean
-#  latitude   :float
-#  longitude  :float
-#  altitude   :float
-#  created_at :datetime
-#  updated_at :datetime
+#  id                   :integer         not null, primary key
+#  name                 :string(255)
+#  organic              :boolean
+#  latitude             :float
+#  longitude            :float
+#  altitude             :float
+#  created_at           :datetime
+#  updated_at           :datetime
+#  organic_certifier_id :integer
+#  farmer_id            :integer
 #
 
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html

spec/models/farm_spec.rb

@@ -2,6 +2,8 @@
 
 describe Farm do
   before(:each) do
+    @organic_certifier = Factory(:organic_certifier)
+    @farmer = Factory(:farmer)
     @valid_attributes = {
       :name => "Farm Name",
       :organic => false,
@@ -39,4 +41,33 @@
     no_altitude_farm = Farm.new(@valid_attributes.merge(:altitude => ""))
     no_altitude_farm.should_not be_valid
   end
+
+  describe "organic certifier associations" do
+    before(:each) do
+      @farm = @organic_certifier.farms.create(@valid_attributes)
+    end
+
+    it "should have an organic certifier attribute" do
+      @farm.should respond_to(:organic_certifier)
+    end
+
+    it "should have the right associated organic certifier" do
+      @farm.organic_certifier.should == @organic_certifier
+    end
+  end
+
+  describe "farmer associations" do
+    before(:each) do
+      @farm = @farmer.farms.create(@valid_attributes)
+    end
+
+    it "should have a farmer attribute" do
+      @farm.should respond_to(:farmer)
+    end
+
+    it "should have the right associated farmer" do
+      @farm.farmer.should == @farmer
+    end
+  end
+
 end

spec/models/farmer_spec.rb

@@ -1,33 +1,47 @@
 require 'spec_helper'
 
 describe Farmer do
-  @washing_station = Factory(:washing_station)
+
   before(:each) do
+    @washing_station = Factory(:washing_station)
     @valid_attributes = {
       :name => "Farmer Name"
     }
   end
 
   it "should create a new instance given valid attributes" do
-    Farmer.create!(@valid_attributes)
+    @washing_station.farmers.create!(@valid_attributes)
   end
 
   it "should require a name" do
     no_name_farmer = Farmer.new(@valid_attributes.merge(:name => ""))
     no_name_farmer.should_not be_valid
   end
 
-  # describe "washing Station associations" do
-  #   before(:each) do
-  #     @farmer = @washing_station.farmer.create(@valid_attributes)
-  #   end
-  #   
-  #   it "should have a washing station attribute" do
-  #     @farmer.should respond_to(:washing_station)
-  #   end
-  #   
-  #   it "should have the right associated washing station" do
-  #     @farmer.washing_station.should == @washing_station
-  #   end
-  # end
+  describe "washing station associations" do
+
+    before(:each) do
+      @farmer = @washing_station.farmers.create(@valid_attributes)
+    end
+
+    it "should have a washing station attribute" do
+      @farmer.should respond_to(:washing_station)
+    end
+
+    it "should have the right associated washing station" do
+      @farmer.washing_station.should == @washing_station
+    end
+  end
+
+  describe "farm associations" do
+
+    before(:each) do
+      @farmer = Farmer.create(@valid_attributes)
+    end
+
+    it "should have a farm attribute" do
+      @farmer.should respond_to(:farms)
+    end
+  end
+
 end

spec/models/organic_certifier_spec.rb

@@ -22,4 +22,15 @@
     no_code_organic_certifier.should_not be_valid
   end
 
+  describe "farm associations" do
+
+    before(:each) do
+      @organic_certifier = OrganicCertifier.create(@valid_attributes)
+    end
+
+    it "should have a farm attribute" do
+      @organic_certifier.should respond_to(:farms)
+    end
+  end
+
 end

spec/models/washing_station_spec.rb

@@ -22,4 +22,14 @@
     no_code_washing_station.should_not be_valid
   end
 
+  describe "farmer associations" do
+
+    before(:each) do
+      @washing_station = WashingStation.create(@valid_attributes)
+    end
+
+    it "should have a farmer attribute" do
+      @washing_station.should respond_to(:farmers)
+    end
+  end
 end