Add aasm_events_for_state and aasm_events_for_current_state [Joao Paulo Lins]

CHANGELOG

@@ -1,3 +1,5 @@
+* Add #aasm_events_for_state and #aasm_events_for_current_state [Joao Paulo Lins]
+
 * Ensure that a state is written for a new record even if aasm_current_state or
   {state}= are never called.
 

lib/aasm.rb

@@ -69,6 +69,15 @@ module AASM
     self.class.aasm_initial_state
   end
 
+  def aasm_events_for_current_state
+    aasm_events_for_state(aasm_current_state)
+  end
+
+  def aasm_events_for_state(state)
+    events = self.class.aasm_events.values.select {|event| event.transitions_from_state?(state) }
+    events.map {|event| event.name}
+  end
+
   private
   def aasm_current_state=(state)
     @aasm_current_state = state

lib/event.rb

@@ -25,6 +25,10 @@ module AASM
         next_state
       end
 
+      def transitions_from_state?(state)
+        @transitions.any? { |t| t.from == state }
+      end
+      
       private
       def transitions(trans_opts)
         Array(trans_opts[:from]).each do |s|