Display paid and unpaid tickets in admin/tickets#show

app/models/ticket.rb

@@ -19,8 +19,10 @@ class Ticket < ActiveRecord::Base
     buyers.include?(user)
   end
 
-  def paid?(user)
-    ticket_purchases.paid.by_user(user).present?
+  def tickets_paid(user)
+    paid_tickets    = quantity_bought_by(user, paid: true)
+    unpaid_tickets  = quantity_bought_by(user, paid: false)
+    "#{paid_tickets}/#{paid_tickets+unpaid_tickets}"
   end
 
   def quantity_bought_by(user, paid: false)

app/views/admin/tickets/show.html.haml

@@ -33,5 +33,5 @@
             %td
               = buyer.affiliation
             %td
-              = @ticket.paid?(buyer)
+              = @ticket.tickets_paid(buyer)
 

spec/models/ticket_spec.rb

@@ -64,24 +64,6 @@ describe Ticket do
     end
   end
 
-  describe '#paid?' do
-    let!(:ticket_purchase) { create(:ticket_purchase, user: user, ticket: ticket) }
-
-    context 'user has paid' do
-      before { ticket_purchase.update_attributes(paid: true) }
-
-      it 'returns true' do
-        expect(ticket.paid?(user)).to eq(true)
-      end
-    end
-
-    context 'user has not paid' do
-      it 'returns false' do
-        expect(ticket.paid?(user)).to eq(false)
-      end
-    end
-  end
-
   describe '#unpaid?' do
     let!(:ticket_purchase) { create(:ticket_purchase, user: user, ticket: ticket) }
 
@@ -101,6 +83,17 @@ describe Ticket do
     end
   end
 
+  describe '#tickets_paid' do
+    before do
+      create(:ticket_purchase, user: user, ticket: ticket)
+      create(:ticket_purchase, user: user, ticket: ticket, paid: true)
+    end
+
+    it 'returns correct number of paid/total tickets' do
+      expect(ticket.tickets_paid(user)).to eq('10/20')
+    end
+  end
+
   describe '#quantity_bought_by' do
     context 'user has not paid' do
       it 'returns the correct value if the user has bought this ticket' do