Restore soft-deleted dependents on recursive restore

lib/mongoid/paranoia.rb

@@ -162,10 +162,10 @@ def to_param
     def restore_relations
       relations.each_pair do |name, association|
         next unless association.dependent == :destroy
-        relation = send(name)
-        next unless relation.present? && relation.paranoid?
-        Array.wrap(relation).each do |doc|
-          doc.restore(recursive: true)
+        klass = association.klass
+        documents = klass ? klass.unscoped { Array.wrap(send(name)) } : Array.wrap(send(name))
+        documents.each do |doc|
+          doc.restore(recursive: true) if doc.respond_to?(:restore)
         end
       end
     end

spec/mongoid/paranoia_spec.rb

@@ -856,6 +856,20 @@ class ParanoidConfiguredReset
       it { expect{ subject.restore_relations}.to_not change { NormHasMany.count } }
       it { expect{ subject.restore_relations}.to_not change { NormHabtm.count   } }
     end
+
+    context "when the parent is reloaded before restoring (regression for #30)" do
+      before { subject.destroy }
+
+      it "restores soft-deleted has_many dependents" do
+        reloaded = ParaBase.unscoped.find(subject.id)
+        expect { reloaded.restore(recursive: true) }.to change { ParaHasMany.count }.by(2)
+      end
+
+      it "restores soft-deleted has_one dependents" do
+        reloaded = ParaBase.unscoped.find(subject.id)
+        expect { reloaded.restore(recursive: true) }.to change { ParaHasOne.count }.by(1)
+      end
+    end
   end
 
   describe ".scoped" do