6 files changed, 28 insertions, 4 deletions
diff --git a/app/models/chouette/journey_pattern.rb b/app/models/chouette/journey_pattern.rb
index 4b4cc2c73..8bdf72dfb 100644
--- a/app/models/chouette/journey_pattern.rb
+++ b/app/models/chouette/journey_pattern.rb
@@ -29,6 +29,8 @@ module Chouette
       values.flatten
     end
 
+    has_checksum_children StopPoint
+
     def self.state_update route, state
       transaction do
         state.each do |item|
diff --git a/app/models/chouette/stop_point.rb b/app/models/chouette/stop_point.rb
index b0906d65f..edb0e81fd 100644
--- a/app/models/chouette/stop_point.rb
+++ b/app/models/chouette/stop_point.rb
@@ -11,6 +11,7 @@ module Chouette
 
     belongs_to :stop_area
     belongs_to :route, inverse_of: :stop_points
+    has_many :journey_patterns, through: :route
     has_many :vehicle_journey_at_stops, :dependent => :destroy
     has_many :vehicle_journeys, -> {uniq}, :through => :vehicle_journey_at_stops
 
diff --git a/app/models/chouette/vehicle_journey.rb b/app/models/chouette/vehicle_journey.rb
index 814eeb388..dd7d75731 100644
--- a/app/models/chouette/vehicle_journey.rb
+++ b/app/models/chouette/vehicle_journey.rb
@@ -143,13 +143,14 @@ module Chouette
 
         vjas =  self.vehicle_journey_at_stops
         vjas += VehicleJourneyAtStop.where(vehicle_journey_id: self.id) unless self.new_record?
-        attrs << vjas.uniq.sort_by { |s| s.stop_point&.position }.map(&:checksum).sort
+        attrs << vjas.uniq.sort_by { |s| s.stop_point&.position }.map(&:checksum)
 
         attrs << self.purchase_windows.map(&:checksum).sort if purchase_windows.present?
       end
     end
 
     has_checksum_children VehicleJourneyAtStop
+    has_checksum_children StopPoint
 
     def set_default_values
       if number.nil?
diff --git a/app/models/concerns/checksum_support.rb b/app/models/concerns/checksum_support.rb
index de3a6e16b..97209f810 100644
--- a/app/models/concerns/checksum_support.rb
+++ b/app/models/concerns/checksum_support.rb
@@ -12,10 +12,13 @@ module ChecksumSupport
   module ClassMethods
     def has_checksum_children klass, opts={}
       parent_class = self
-      relation = opts[:relation] || self.model_name.singular
+      belongs_to = opts[:relation] || self.model_name.singular
+      has_many = opts[:relation] || self.model_name.plural
       klass.after_save do
-        parent = self.send(relation)
-        parent&.update_checksum_without_callbacks!
+        parents = []
+        parents << self.send(belongs_to) if klass.reflections[belongs_to].present?
+        parents += self.send(has_many) if klass.reflections[has_many].present?
+        parents.each &:update_checksum_without_callbacks!
       end
     end
   end
diff --git a/spec/models/chouette/journey_pattern_spec.rb b/spec/models/chouette/journey_pattern_spec.rb
index 57ee5ab4e..fbc48c95a 100644
--- a/spec/models/chouette/journey_pattern_spec.rb
+++ b/spec/models/chouette/journey_pattern_spec.rb
@@ -6,6 +6,14 @@ describe Chouette::JourneyPattern, :type => :model do
 
   describe 'checksum' do
     it_behaves_like 'checksum support'
+
+    context "when a stop_point is updated" do
+      it "should update checksum" do
+        expect do
+          subject.stop_points.first.update position: subject.stop_points.size
+        end.to change{subject.reload.checksum}
+      end
+    end
   end
 
   # context 'validate minimum stop_points size' do
diff --git a/spec/models/chouette/vehicle_journey_spec.rb b/spec/models/chouette/vehicle_journey_spec.rb
index 8682d59a2..e0d4309d2 100644
--- a/spec/models/chouette/vehicle_journey_spec.rb
+++ b/spec/models/chouette/vehicle_journey_spec.rb
@@ -35,6 +35,15 @@ describe Chouette::VehicleJourney, :type => :model do
       expect{create(:vehicle_journey_at_stop, vehicle_journey: vehicle_journey)}.to change{vehicle_journey.checksum}
     end
 
+    it "changes when a stop_point is updated" do
+      vehicle_journey = create(:vehicle_journey)
+      stop_point = vehicle_journey.vehicle_journey_at_stops.first.stop_point
+      expect(stop_point.vehicle_journeys).to include vehicle_journey
+      expect do
+        stop_point.update position: stop_point.route.stop_points.size
+      end.to change{vehicle_journey.reload.checksum}
+    end
+
     context "when custom_field_values change" do
       let(:vehicle_journey){ create(:vehicle_journey, custom_field_values: {custom_field.code.to_s => former_value}) }
       let(:custom_field){ create :custom_field, field_type: :string, code: :energy, name: :energy, resource_type: "VehicleJourney" }