erp5_hal_json_style: Fix double translation on parent title when traversing a child document

Before this fix, double translation on Sale Order title was happened every time
displaying a Sale Order Line, for example.

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/ERP5Document_getHateoas.py

@@ -1428,13 +1428,18 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
       container = traversed_document.getParentValue()
       if container != portal:
         # Jio does not support fetching the root document for now
+        if container.getRelativeUrl():
+          container_name = ensureUTF8(container.getTranslatedTitle())
+        else:
+          # for example in portal_skin
+          container_name = ensureUTF8(container.getTitle())
         result_dict['_links']['parent'] = {
           "href": default_document_uri_template % {
             "root_url": site_root.absolute_url(),
             "relative_url": container.getRelativeUrl(),
             "script_id": script.id
           },
-          "name": Base_translateString(container.getTitle()),
+          "name": container_name
         }
 
     # Find current action URL and extract embedded view

bt5/erp5_hal_json_style/TestTemplateItem/portal_components/test.erp5.testHalJsonStyle.py

@@ -2973,6 +2973,32 @@ return msg"
     result_dict = json.loads(result)
     self.assertEqual(result_dict['title'], 'Foo_zhongwen')
 
+  @simulate('Base_getRequestUrl', '*args, **kwargs',
+      'return "http://example.org/bar"')
+  @simulate('Base_getRequestHeader', '*args, **kwargs',
+            'return "application/hal+json"')
+  @simulate('Base_translateString', 'msg, catalog="ui", encoding="utf8", lang="wo", **kw',
+  code_string)
+  @createIndexedDocument()
+  @changeSkin('Hal')
+  def test_getHateoasForm_not_adding_parent_title_translation(self, document):
+    document_title = document.getTitle() + "_not_translate_parent_message_catalog"
+    document.setTitle(document_title)
+    message_catalog = self.portal.Localizer.erp5_ui
+    self.assertFalse(message_catalog.message_exists(document_title))
+    foo_line = document.newContent(portal_type='Foo Line')
+    fake_request = do_fake_request("GET")
+    result = self.portal.web_site_module.hateoas.ERP5Document_getHateoas(
+      REQUEST=fake_request, mode="traverse",
+      relative_url=foo_line.getRelativeUrl(), view="view")
+
+    result_dict = json.loads(result)
+    # The document title includes 'ö' at the last in this test class, so calling decode("UTF-8")
+    self.assertEqual(result_dict['_links']['parent'],
+      {"href": "urn:jio:get:%s" % document.getRelativeUrl(), "name": document.getTitle().decode("UTF-8")})
+
+    # make sure traversing the child document does not adding the parent title translation
+    self.assertFalse(message_catalog.message_exists(document_title))
 
 class TestERP5Action_getHateoas(ERP5HALJSONStyleSkinsMixin):