projects_controler.rb

class Accounts::ProjectsController < Accounts::BaseController
  def show
    @project  = find_project
  end

  def update
    @project = find_project
    
    if @project.update_attributes(params[:project])
      redirect_to [@account, @project], :notice => 'Project updated!'
    else
      render "edit"
    end
  end

  def destroy
    @project = find_project

    redirect_to [@account, :projects]
  end

  private
  
  def find_project
    @account.projects.find(params[:id])
  end
end

projects_controller_spec.rb

require 'spec_helper'

describe Accounts::ProjectsController do
  before { sign_up_and_mock_account }

  let(:current_user){ @current_user }
  let(:account){ mock_account(:projects => projects) }
  let(:project){ mock_project }
  let(:projects){ [project].tap { |projects| projects.stub :find => project } }

  describe "with admin user" do
    before { account.should_receive(:admin?).with(current_user).and_return true }

    describe "PUT update" do
      describe "with valid params" do
        before { project.should_receive(:update_attributes).with({'these' => 'params'}).and_return true }
        before { put :update, :account_id => "1", :id => "2", :project => {:these => 'params'} }

        it { should assign_to(:project).with(project) }
        it { should set_the_flash }
        it { should redirect_to(account_project_url(account, project)) }
      end

      describe "with invalid params" do
        before { project.should_receive(:update_attributes).with({'these' => 'params'}).and_return false }
        before { put :update, :account_id => "1", :id => "2", :project => {:these => 'params'} }

        it { should assign_to(:project).with(project) }
        it { should render_template("edit") }
      end
    end

    describe "GET show" do
      before { get :show, :account_id => "1", :id => "2" }

      it { should assign_to(:project).with(project) }
      it { should render_template(:show) }
    end
    
    describe "DELETE destroy" do
      before { project.should_receive(:destroy) }
      before { delete :destroy, :account_id => "1", :id => "2" }

      it { should redirect_to(account_projects_url(account)) }
    end
  end
end