Remove helping hints Issue #211

tutor/app/controllers/hints_controller.rb

@@ -18,7 +18,7 @@ def new
 		@answer = ModelAnswer.find(params[:model_answer_id])
 		@@answer_id = params[:model_answer_id]
 	end
-	
+
 	# [Adding Helping Hints - 4.12]
 	# Creates a new record to Hint Table
 	# Parameters:
@@ -58,4 +58,21 @@ def create
 	# Author: Mohamed Fadel
 	def permitCreate
 		params.require(:Hint).permit(:submission_counter, :message)
-	end
+	end
+
+			# [Delete a Hint - Story 4.21]
+	# This action takes the hint id, remove it from the database
+	#	and then redirects the user to the edit page accompanied
+	#	with a "Hint deleted" message.
+	# Parameters:
+	#	params[:id]: The current hint's id
+	# Returns: 
+	#	none
+	# Author: Mohamed Fadel
+	def destroy
+		hint = Hint.find_by_id(params[:id])
+		hint.destroy
+		flash[:success_deletion] = "Hint deleted."
+		redirect_to :controller => 'model_answers', :action => 'edit', :id => @@answer_id
+	end
+end

tutor/app/views/hints/_index.html.erb

@@ -0,0 +1,7 @@
+<!--Add delete button to the edit view in model answers
+Author: Mohamed Fadel-->
+
+<th style = "width:20%">Delete</th>
+
+<td><%= button_to "Delete", {controller: :hints, action: :destroy, id: hint1.id}, 
+								:method => :delete, class: 'btn btn-primary btn-xs' %></td>