Logic around showing support

app/models/organization.rb

@@ -70,5 +70,13 @@ def do_after_approved_actions
   def set_status
     needs_to_be_approved! if inactive?
   end
+
+  def show_support_for(pitch)
+    pitch.supporting_organizations << self
+  end
+
+  def shown_support_for?(pitch)
+    pitch.supporting_organizations.include? self
+  end
 end
 

app/models/pitch.rb

@@ -151,6 +151,10 @@ def featured?
     self.feature
   end
 
+  def show_support!(organization)
+    supporting_organizations << organization unless supporting_organizations.include?(organization)
+  end
+
   def feature!
     self.update_attribute(:feature, true)
   end

spec/models/organization_spec.rb

@@ -56,4 +56,29 @@
       end
     end
   end
+
+  describe "#show_support" do
+    before do
+      @organization = Factory(:organization)
+      @pitch = Factory(:pitch)
+    end
+
+    it "adds the organization to the pitch's supporters" do
+      lambda{@organization.show_support_for(@pitch)}.should change(@pitch.supporting_organizations, :size).by(1)
+    end
+  end
+
+  describe "shown_support_for?" do
+    before do
+      @organization = Factory(:organization)
+      @pitch = Factory(:pitch)
+    end
+    it "should return true if the organization is in the pitches supporting_organizations" do
+      @pitch.supporting_organizations.stub!(:include?).and_return(true)
+      @organization.shown_support_for?(@pitch).should be_true
+    end
+    it "should return false otherwise" do
+      @organization.shown_support_for?(@pitch).should be_false
+    end
+  end
 end

spec/models/pitch_spec.rb

@@ -441,6 +441,23 @@
     end
   end
 
+  describe "show_support!" do
+    before do
+      @pitch = Factory(:pitch)
+      @organization = Factory(:organization)
+    end
+    it "add the organization to the pitch's supporting organizations" do
+      @pitch.show_support!(@organization)
+      @pitch.supporting_organizations.should include(@organization)
+    end
+
+    it "doesn't add the same organization to the pitch's supporting organizations twice" do
+      @pitch.show_support!(@organization)
+      lambda{@pitch.show_support!(@organization)}.should change(@pitch.supporting_organizations, :size).by(0)
+    end
+
+  end
+
   describe "featuring" do
 
     describe "feature!" do