app/models/tramway/event/participant.rb in tramway-event-1.5.4 vs app/models/tramway/event/participant.rb in tramway-event-1.6

@@ -1,3 +1,39 @@
 class Tramway::Event::Participant < ::Tramway::Event::ApplicationRecord
   belongs_to :event, class_name: 'Tramway::Event::Event'
+  
+  state_machine :participation_state, initial: :requested do
+    state :requested
+    state :prev_approved
+    state :waiting
+    state :rejected
+    state :approved
+    state :without_answer
+
+    event :previous_approve do
+      transition [ :requested, :without_answer, :waiting ] => :prev_approved
+    end
+
+    event :wait_for_decision do
+      transition [ :requested, :without_answer ] => :waiting
+    end
+
+    event :reject do
+      transition [ :requested, :without_answer, :waiting ] => :rejected
+    end
+
+    event :approve do
+      transition prev_approved: :approved
+    end
+
+    event :not_got_answer do
+      transition requested: :without_answer
+    end
+  end
+
+  scope :requested, -> { where participation_state: :requested }
+  scope :waiting, -> { where participation_state: :waiting }
+  scope :prev_approved, -> { where participation_state: :prev_approved }
+  scope :rejected, -> { where participation_state: :rejected }
+  scope :approved, -> { where participation_state: :approved }
+  scope :without_answer, -> { where participation_state: :without_answer }
 end