Add a new exception type for the benefit of consumers

Author: pablobm

app/controllers/api/notes_controller.rb

@@ -89,7 +89,7 @@ def create
       lat = OSM.parse_float(params[:lat], OSM::APIBadUserInput, "lat was not a number")
       description = params[:text]
 
-      raise OSM::APIAccessDenied if current_user.nil? && GeoblockZone.falls_within_any?(:lon => lon, :lat => lat)
+      raise OSM::APIProtectedZoneError if current_user.nil? && GeoblockZone.falls_within_any?(:lon => lon, :lat => lat)
 
       # Get note's author info (for logged in users - user_id, for logged out users - IP address)
       note_author_info = author_info

lib/osm.rb

@@ -19,8 +19,18 @@ def status
 
   # Raised when access is denied.
   class APIAccessDenied < APIError
-    def initialize
-      super("Access denied")
+    def initialize(message = "Access denied")
+      super
+    end
+
+    def status
+      :forbidden
+    end
+  end
+
+  class APIProtectedZoneError < APIAccessDenied
+    def initialize(message = "Attempted to edit a Protected Zone without enough trust")
+      super
     end
 
     def status