new relations for receivers and tags to district

Signed-off-by: evizitei <ethan.vizitei@gmail.com>

app/models/district.rb

@@ -1,4 +1,6 @@
 class District < ActiveRecord::Base
   has_many :users
   has_many :stations
+  has_many :receivers
+  has_many :tags
 end

app/models/receiver.rb

@@ -1,5 +1,6 @@
 class Receiver < ActiveRecord::Base
   belongs_to :station
+  belongs_to :district
   has_many :receiver_staffing_records
 
   def tag_arriving!(tag_sig)

app/models/tag.rb

@@ -1,4 +1,5 @@
 class Tag < ActiveRecord::Base
+  belongs_to :district
   has_many :staffing_records
   has_many :receiver_staffing_records
 end

spec/models/district_spec.rb

@@ -8,4 +8,12 @@
   it "has many stations" do
     District.new.stations.should eq([])
   end
+
+  it "has many tags" do
+    District.new.tags.should eq([])
+  end
+
+  it "has many receivers" do
+    District.new.receivers.should eq([])
+  end
 end

spec/models/receiver_spec.rb

@@ -7,6 +7,23 @@
     receiver.station.should == station
   end
 
+  it "belongs to a district" do
+    district = Factory(:district)
+    receiver = Factory(:receiver,:district=>district)
+    receiver.district.should == district
+  end
+
+  it "should update the district when the station changes" do
+    district = Factory(:district)
+    station = Factory(:station,:district=>district)
+    receiver = Factory(:receiver)
+    receiver.station = station
+    receiver.save
+    receiver.reload
+    receiver.station.should == station
+    receiver.district.should == district
+  end
+
   it "has many staffing records" do
     Receiver.new.receiver_staffing_records.should == []
   end

spec/models/tag_spec.rb

@@ -13,4 +13,8 @@
   it "has many receiver_staffing_records" do
     Tag.new.receiver_staffing_records.should eq([])
   end
+
+  it "belongs to a district" do
+    Tag.new.district.should == nil
+  end
 end