Modify views for booths

app/models/booth.rb

@@ -1,4 +1,6 @@
 class Booth < ActiveRecord::Base
+  include ActiveRecord::Transitions
+
   belongs_to :conference
   has_many :booth_requests
   has_many :users, through: :booth_requests
@@ -13,4 +15,35 @@ class Booth < ActiveRecord::Base
             :logo_link,
             :conference_id,
             presence: true
+
+  state_machine initial: :submitted do
+    state :submitted
+    state :withdrawn
+    state :to_accept
+    state :accepted
+    state :rejected
+
+    event :restart do
+      transitions to: :submitted, from: [:withdrawn]
+    end
+    event :withdrawn do
+      transitions to: :withdrawn, from: [:submitted, :to_accept, :accepted]
+    end
+    event :to_accept do
+      transitions to: :to_accept, from: [:submitted, :rejected, :accepted]
+    end
+    event :accept do
+      transitions to: :accepted, from: [:submitted, :to_accept]
+    end
+    event :reject do
+      transitions to: :rejected, from: [:submitted]
+    end
+    event :reset do
+      transitions to: :submitted, from: [:to_accept]
+    end
+  end
+
+  def transition_possible?(transition)
+    self.class.state_machine.events_for(current_state).include?(transition)
+  end
 end