Don't expose internal methods in the associations

activerecord/lib/active_record/associations/association.rb

@@ -79,18 +79,6 @@ def scope
         target_scope.merge!(association_scope)
       end
 
-      # The scope for this association.
-      #
-      # Note that the association_scope is merged into the target_scope only when the
-      # scope method is called. This is because at that point the call may be surrounded
-      # by scope.scoping { ... } or with_scope { ... } etc, which affects the scope which
-      # actually gets built.
-      def association_scope
-        if klass
-          @association_scope ||= AssociationScope.scope(self)
-        end
-      end
-
       def reset_scope
         @association_scope = nil
       end
@@ -129,12 +117,6 @@ def klass
         reflection.klass
       end
 
-      # Can be overridden (i.e. in ThroughAssociation) to merge in other scopes (i.e. the
-      # through association's scope)
-      def target_scope
-        AssociationRelation.create(klass, self).merge!(klass.all)
-      end
-
       def extensions
         extensions = klass.default_extensions | reflection.extensions
 
@@ -195,6 +177,24 @@ def create!(attributes = {}, &block)
       end
 
       private
+        # The scope for this association.
+        #
+        # Note that the association_scope is merged into the target_scope only when the
+        # scope method is called. This is because at that point the call may be surrounded
+        # by scope.scoping { ... } or unscoped { ... } etc, which affects the scope which
+        # actually gets built.
+        def association_scope
+          if klass
+            @association_scope ||= AssociationScope.scope(self)
+          end
+        end
+
+        # Can be overridden (i.e. in ThroughAssociation) to merge in other scopes (i.e. the
+        # through association's scope)
+        def target_scope
+          AssociationRelation.create(klass, self).merge!(klass.all)
+        end
+
         def scope_for_create
           scope.scope_for_create
         end

activerecord/lib/active_record/associations/has_many_through_association.rb

@@ -21,20 +21,6 @@ def concat(*records)
         super
       end
 
-      def concat_records(records)
-        ensure_not_nested
-
-        records = super(records, true)
-
-        if owner.new_record? && records
-          records.flatten.each do |record|
-            build_through_record(record)
-          end
-        end
-
-        records
-      end
-
       def insert_record(record, validate = true, raise = false)
         ensure_not_nested
 
@@ -48,6 +34,20 @@ def insert_record(record, validate = true, raise = false)
       end
 
       private
+        def concat_records(records)
+          ensure_not_nested
+
+          records = super(records, true)
+
+          if owner.new_record? && records
+            records.flatten.each do |record|
+              build_through_record(record)
+            end
+          end
+
+          records
+        end
+
         # The through record (built with build_record) is temporarily cached
         # so that it may be reused if insert_record is subsequently called.
         #