added "Voted" to prevent multiple votes

crowdxblock/crowdxblock.py

@@ -18,6 +18,7 @@ class CrowdXBlock(XBlock):
     WrongAnswers = List(default=[], scope=Scope.user_state) #List of mistakes made by user
     DefaultHints = Dict(default={"hint": 100, "hinttwo": 10, "hintthree": 0, "hintasdf": 50, "aas;dklfj?": 1000, "SuperDuperBestHint": 10000}, scope=Scope.content) #Default hints in case no incorrect answers in hints match the user's mistake
     Used = List(default=[], scope=Scope.user_state)#List of used hints from HintsToUse
+    Voted = Integer(default=0, scope=Scope.user_state)
 
     def student_view(self, context=None):
         html = self.resource_string("static/html/crowdxblock.html")
@@ -77,6 +78,7 @@ class CrowdXBlock(XBlock):
     
     @XBlock.json_handler #add 1 or -1 to rating of a hint
     def rate_hint(self, data, suffix=''):
+	if self.Voted == 0:
             for key in self.hints:
 	        tempdict = str(self.hints[str(key)[0]]) #rate hint that is in hints 
 	        tempdict = (ast.literal_eval(tempdict))
@@ -86,12 +88,15 @@ class CrowdXBlock(XBlock):
 		    print("TESTING AGAIN HI")
 		    print("hints are " + str(self.hints[str(key)]))
 		    print("otherstuff " + str(self.hints))
+		    self.Voted = 1
             for key in self.DefaultHints:	
                 if key == self.Used[int(data['ansnum'])]: #rating for hints in DefaultHints
 	            self.DefaultHints[str(key)] += int(data["rating"])
+		    self.Voted = 1
 
     @XBlock.json_handler
     def give_hint(self, data, suffix=''): #add student-made hint into hints
+	if self.Voted == 0:
             for key in self.hints:
 	        if str(key) == str(self.WrongAnswers[0]):
 		    if str(data['submission']) not in self.hints[str(key)]:
@@ -99,8 +104,10 @@ class CrowdXBlock(XBlock):
 	                tempdict = (ast.literal_eval(tempdict))
 	                tempdict.update({data['submission']: 0})
 	                self.hints[str(key)] = tempdict
+		        self.Voted = 1
 		    else:
 		        self.hints[str(key)[str(data['submission'])]] += 1
+		        self.Voted = 1
 
     @staticmethod
     def workbench_scenarios():