Adding the ability to delete cards.

app/controllers/cards_controller.rb

@@ -26,4 +26,11 @@ def update
     item = {card: card} if card.update_attributes(params[:card])
     render_json(item, :error_code => :bad_request)
   end
+
+  def destroy
+    project = Project.find(params[:project_id])
+    card = project.cards.find(params[:id])
+    item = {} if card.destroy
+    render_json(item, :error_code => :bad_request)
+  end
 end

features/cards.feature

@@ -51,3 +51,16 @@ Feature: Cards API
       | 1  | Find a Deputy    | Get a Deputy for the Sheriff      |
       | 2  | Kill the Sheriff | Make the town kill the Sheriff    |
       | 3  | Take the town    | Make everybody sell their houses  |
+
+  Scenario: Deleting a card
+    Given I have the cards for project "1":
+      | id | title            | description                       |
+      | 1  | Find a Sheriff   | Get a Sheriff everybody will hate |
+      | 2  | Kill the Sheriff | Make the town kill the Sheriff    |
+      | 3  | Take the town    | Make everybody sell their houses  |
+    When I delete card "3" for project "1"
+    And I call API "/projects/1/cards"
+    Then the response should be a collection of "cards" with:
+      | id | title            | description                       |
+      | 1  | Find a Sheriff   | Get a Sheriff everybody will hate |
+      | 2  | Kill the Sheriff | Make the town kill the Sheriff    |

features/step_definitions/card_steps.rb

@@ -14,3 +14,8 @@
   project = Project.create!(id: project_id, name: "Blazing Saddles", description: "Good movie")
   put_resource "/projects/#{project_id}/cards/#{card_id}", 'card', table.hashes
 end
+
+When /^I delete card "([^"]*)" for project "([^"]*)"$/ do |card_id, project_id|
+  project = Project.create!(id: project_id, name: "Blazing Saddles", description: "Good movie")
+  delete_resource "/projects/#{project_id}/cards/#{card_id}"
+end

features/support/helpers.rb

@@ -9,3 +9,7 @@ def put_resource(put_path, resource, hashes)
     put put_path, :format => :json, resource => attributes  
   end
 end
+
+def delete_resource(delete_path)
+  delete delete_path, :format => :json
+end

spec/controllers/cards_controller_spec.rb

@@ -118,4 +118,37 @@
     end
   end
 
+  describe '.delete' do
+    before do
+      Project.stub(:find).with(@project.id).and_return(@project)
+      @card = @cards.first
+      @project.stub_chain(:cards, :find).with(@card.id).and_return(@card)
+    end
+
+    context "card is deleted successfully" do
+      before do
+        @card.should_receive(:destroy).and_return(true)
+        delete :destroy, :format => :json, :project_id => @project.id, :id => 1
+      end
+
+      it { should respond_with(:success) }
+      it { should respond_with_content_type(:json) }
+      it { response.body.should be_json_eql({}) }
+    end
+
+    context "card is not deleted" do
+      before do
+        @card.should_receive(:destroy).and_return(false)
+        delete :destroy, :format => :json, :project_id => @project.id, :id => 1
+      end
+
+      it { should respond_with(:bad_request) }
+      it { should respond_with_content_type(:json) }
+      it { response.body.should be_json_eql(nil) }
+    end
+  end
+
+  describe 'when the project cannot be found' do
+    pending
+  end
 end