Allow max_attendees to be nil

Gemfile.lock

@@ -615,6 +615,3 @@ DEPENDENCIES
   web-console (~> 2.0)
   webmock
   whenever
-
-BUNDLED WITH
-   1.11.2

app/models/event.rb

@@ -35,7 +35,6 @@ class Event < ActiveRecord::Base
   validates :program, presence: true
   validates :max_attendees, numericality: { only_integer: true, greater_than_or_equal_to: 1, allow_nil: true }
 
-  validate :max_attendees_and_require_registration
   validate :max_attendees_no_more_than_room_size
 
   scope :confirmed, -> { where(state: 'confirmed') }
@@ -78,7 +77,8 @@ class Event < ActiveRecord::Base
   end
 
   def registration_possible?
-    return false unless max_attendees
+    return false unless require_registration && state == 'confirmed'
+    return true if max_attendees.nil?
     registrations.count < max_attendees
   end
 
@@ -225,14 +225,6 @@ class Event < ActiveRecord::Base
 
   private
 
-  ##
-  # If max_attendees variable is set (higher than 0)
-  # variable require_registration must also be set
-  def max_attendees_and_require_registration
-    errors.add(:require_registration, 'must be enabled, when you set max_attendees') if max_attendees && !require_registration
-    errors.add(:max_attendees, 'must be enabled, when you set require_registration') if require_registration && max_attendees.nil?
-  end
-
   ##
   # Do not allow, for the event, more attendees than the size of the room
   def max_attendees_no_more_than_room_size

app/models/program.rb

@@ -13,8 +13,7 @@ class Program < ActiveRecord::Base
     end
 
     def with_registration_open
-      where(require_registration: true, state: :confirmed).
-      map { |e| e if e.max_attendees > e.registrations.count }.compact
+      select { |e| e if e.registration_possible? }
     end
 
     # All confirmed events of the conference with attribute require_registration

app/views/admin/events/registrations.html.haml

@@ -2,7 +2,11 @@
   .col-md-12
     .page-header
       %h1
-        Registrations (#{@event_registrations.length}/#{@event.max_attendees})
+        Registrations
+        - if @event.max_attendees
+          (#{@event.events_registrations.length}/#{@event.max_attendees})
+        - else
+          (#{@event.events_registrations.length})
       .text-muted
         for
         = @event.title

app/views/proposal/registrations.html.haml

@@ -3,7 +3,11 @@
     .col-md-10.col-md-offset-1
       .page-header
         %h1
-          Registrations (#{@event.events_registrations.length}/#{@event.max_attendees})
+          Registrations
+          - if @event.max_attendees
+            (#{@event.events_registrations.length}/#{@event.max_attendees})
+          - else
+            (#{@event.events_registrations.length})
         .text-muted
           for
           = @event.title

spec/controllers/proposal_controller_spec.rb

@@ -416,6 +416,24 @@ describe ProposalController do
       before { event.update_attributes(state: 'unconfirmed') }
 
       context 'confirmed successfully' do
+        describe 'when require_registration is set' do
+          before :each do
+            event.require_registration = true
+            event.max_attendees = nil
+            event.save!
+            patch :confirm, conference_id: conference.short_title, id: event.id
+          end
+
+          it 'assigns url variable' do
+            expect(assigns(:url)).to eq '/conference/lama101/program/proposal/1'
+          end
+
+          it 'change state of event to confirmed' do
+            event.reload
+            expect(event.confirmed?).to be true
+          end
+        end
+
         describe 'general actions' do
           before { patch :confirm, conference_id: conference.short_title, id: event.id }
 

spec/models/event_spec.rb

@@ -24,30 +24,6 @@ describe Event do
     it { is_expected.to validate_presence_of(:program) }
     it { is_expected.to validate_presence_of(:event_type) }
 
-    describe '#max_attendees_and_require_registration' do
-      it 'allows user to set max_attendees, only if require_registration is set' do
-        event.require_registration = true
-        event.max_attendees = 2
-
-        expect(event.valid?).to eq true
-      end
-
-      it 'does not allow max_attendees to be set without require_registration' do
-        event.max_attendees = 2
-
-        expect(event.valid?).to eq false
-        expect(event.errors[:require_registration]).to eq ['must be enabled, when you set max_attendees']
-      end
-
-      it 'does not allow require_registration to be set without max_attendees' do
-        event.require_registration = true
-        event.max_attendees = nil
-
-        expect(event.valid?).to eq false
-        expect(event.errors[:max_attendees]).to eq ['must be enabled, when you set require_registration']
-      end
-    end
-
     describe 'max_attendees_no_more_than_room_size' do
       before :each do
         event.room = create(:room, size: 3)
@@ -148,20 +124,39 @@ describe Event do
   describe '#registration_possible?' do
     describe 'when the event requires registration' do
       before :each do
+        event.state = 'confirmed'
         event.require_registration = true
         event.max_attendees = 3
         event.registrations << create(:registration)
+        event.save!
+      end
+
+      it 'returns true, if the event has no max_attendees' do
+        event.max_attendees = nil
+        event.save!
+        expect(event.registration_possible?).to eq true
       end
 
       it 'returns true, if the limit has not been reached' do
         expect(event.registration_possible?).to eq true
       end
 
+      it 'returns true, if the event is confirmed' do
+        event.save!
+        expect(event.registration_possible?).to eq true
+      end
+
       it 'returns false, if the limit has been reached' do
         event.registrations << create(:registration)
         event.registrations << create(:registration)
         expect(event.registration_possible?).to eq false
       end
+
+      it 'returns false, if the event is not confirmed' do
+        event.state = 'new'
+        event.save!
+        expect(event.registration_possible?).to eq false
+      end
     end
 
     describe 'when the event does not require registration' do