[hal_json] Render Report by passing Selection.params into search method params

-  ensure serializability of such params
-  unfortunately construct Selection with given params since we do not use ReportSection.pushReport

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

@@ -46,7 +46,7 @@ MARKER = []
 
 if REQUEST is None:
   REQUEST = context.REQUEST
-  # raise Unauthorized
+
 if response is None:
   response = REQUEST.RESPONSE
 
@@ -61,6 +61,43 @@ def byteify(string):
   else:
     return string
 
+
+def ensureSerializable(obj):
+  """Ensure obj and all sub-objects are JSON serializable."""
+  if isinstance(obj, dict):
+    for key in obj:
+      obj[key] = ensureSerializable(obj[key])
+  # throw away date's type information and later reconstruct as Zope's DateTime
+  if isinstance(obj, DateTime):
+    return obj.ISO()
+  if isinstance(obj, (datetime.datetime, datetime.date, datetime.time)):
+    return obj.isoformat()
+  # we don't check other isinstances - we believe that iterables don't contain unserializable objects
+  return obj
+
+
+datetime_iso_re = re.compile(r'^\d{4}-\d{2}-\d{2} |T\d{2}:\d{2}:\d{2}.*$')
+time_iso_re = re.compile(r'^(\d{2}):(\d{2}):(\d{2}).*$')
+def ensureDeserialized(obj):
+  """Deserialize classes serialized by our own `ensureSerializable`.
+
+  Method `biteify` must not be called on the result because it would revert out
+  deserialization by calling __str__ on constructed classes.
+  """
+  if isinstance(obj, dict):
+    for key in obj:
+      obj[key] = ensureDeserialized(obj[key])
+  # seems that default __str__ method is good enough
+  if isinstance(obj, str):
+    # Zope's DateTime must be good enough for everyone
+    if datetime_iso_re.match(obj):
+      return DateTime(obj)
+    if time_iso_re.match(obj):
+      match_obj = time_iso_re.match(obj)
+      return datetime.time(*tuple(map(int, match_obj.groups())))
+  return obj
+
+
 def getProtectedProperty(document, select):
   """getProtectedProperty is a security-aware substitution for builtin `getattr`
 
@@ -131,7 +168,7 @@ def getUidAndAccessorForAnything(search_result, result_index, traversed_document
     value = getter(random_object, "value")
   """
   if hasattr(search_result, "getObject"):
-    # search_result = search_result.getObject()
+    # "Brain" object - which simulates DB Cursor thus result must have UID
     contents_uid = search_result.uid
     # every document indexed in catalog has to have relativeUrl
     contents_relative_url = getRealRelativeUrl(search_result)
@@ -307,18 +344,21 @@ url_template_dict = {
 default_document_uri_template = url_template_dict["jio_get_template"]
 Base_translateString = context.getPortalObject().Base_translateString
 
+
 def getRealRelativeUrl(document):
   return '/'.join(portal.portal_url.getRelativeContentPath(document))
 
+
 def getFormRelativeUrl(form):
   return portal.portal_catalog(
-    portal_type="ERP5 Form",
+    portal_type=("ERP5 Form", "ERP5 Report"),
     uid=form.getUid(),
     id=form.getId(),
     limit=1,
     select_dict={'relative_url': None}
   )[0].relative_url
 
+
 def getFieldDefault(traversed_document, field, key, value=None):
   # REQUEST.get(field.id, field.get_value("default"))
   result = traversed_document.Field_getDefaultValue(field, key, value, REQUEST)
@@ -342,6 +382,10 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
   if key is None:
     key = field.generate_field_key(key_prefix=key_prefix)
 
+  if meta_type == "ProxyField":
+    # resolve the base meta_type
+    meta_type = field.getRecursiveTemplateField().meta_type
+
   result = {
     "type": meta_type,
     "title": Base_translateString(field.get_value("title")),
@@ -351,7 +395,6 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
     "hidden": field.get_value("hidden"),
     "description": field.get_value("description"),
   }
-
   if "Field" in meta_type:
     # fields have default value and can be required (unlike boxes)
     result.update({
@@ -359,12 +402,7 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
       "default": getFieldDefault(traversed_document, field, result["key"], value),
     })
 
-  if meta_type == "ProxyField":
-    return renderField(traversed_document, field, form, value,
-                       meta_type=field.getRecursiveTemplateField().meta_type,
-                       key=key, key_prefix=key_prefix,
-                       selection_params=selection_params)
-
+  # start the actual "switch" on field's meta_type here
   if meta_type in ("ListField", "RadioField", "ParallelListField", "MultiListField"):
     result.update({
       # XXX Message can not be converted to json as is
@@ -511,7 +549,6 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
         if rel_cache[key] is not MARKER:
           REQUEST.set(key, rel_cache[key])
 
-
     result.update({
       "url": relative_url,
       "translated_portal_types": translated_portal_type,
@@ -552,11 +589,20 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
     return result
 
   if meta_type == "ListBox":
-    """Display list of objects with optional search/sort capabilities on columns from catalog."""
+    """Display list of objects with optional search/sort capabilities on columns from catalog.
+
+    We might be inside a ReportBox which is inside a parent form BUT we still have access to
+    the original REQUEST with sent POST values from the parent form. We can save those
+    values into our query method and reconstruct them meanwhile calling asynchronous jio.allDocs.
+    """
     _translate = Base_translateString
 
-    column_list = [(name, _translate(title)) for name, title in field.get_value("columns")]
-    editable_column_list = [(name, _translate(title)) for name, title in field.get_value("editable_columns")]
+    # column definition in ListBox own value 'columns' is superseded by dynamic
+    # column definition from Selection for specific Report ListBoxes; the same for editable_columns
+    column_list = [(name, _translate(title)) for name, title in (selection_params.get('selection_columns', [])
+                                                                 or field.get_value("columns"))]
+    editable_column_list = [(name, _translate(title)) for name, title in (selection_params.get('editable_columns', [])
+                                                                          or field.get_value("editable_columns"))]
     catalog_column_list = [(name, title)
                            for name, title in column_list
                            if sql_catalog.isValidColumn(name)]
@@ -568,25 +614,29 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
 
     # try to get specified sortable columns and fail back to searchable fields
     sort_column_list = [(name, _translate(title))
-                        for name, title in field.get_value("sort_columns")
+                        for name, title in (selection_params.get('selection_sort_order', [])
+                                            or field.get_value("sort_columns"))
                         if sql_catalog.isValidColumn(name)] or search_column_list
+    # portal_type list can be overriden by selection too
+    # since it can be intentionally empty we don't override with non-empty field value
+    portal_type_list = selection_params.get("portal_type", field.get_value('portal_types'))
 
     # requirement: get only sortable/searchable columns which are already displayed in listbox
     # see https://lab.nexedi.com/nexedi/erp5/blob/HEAD/product/ERP5Form/ListBox.py#L1004
     # implemented in javascript in the end
     # see https://lab.nexedi.com/nexedi/erp5/blob/master/bt5/erp5_web_renderjs_ui/PathTemplateItem/web_page_module/rjs_gadget_erp5_listbox_js.js#L163
 
-    portal_types = field.get_value('portal_types')
-    default_params = dict(field.get_value('default_params'))
+    default_params = dict(field.get_value('default_params'))  # default_params is a list of tuples
     default_params['ignore_unknown_columns'] = True
-    if selection_params is not None:
+    # we abandoned Selections in RJS thus we mix selection query parameters into
+    # listbox's default parameters
     default_params.update(selection_params)
-    # How to implement pagination?
-    # default_params.update(REQUEST.form)
-    lines = field.get_value('lines')
-    list_method_query_dict = dict(
-      portal_type=[x[1] for x in portal_types], **default_params
-    )
+
+    # ListBoxes in report view has portal_type defined already in default_params
+    # in that case we prefer non_empty version
+    list_method_query_dict = default_params.copy()
+    if not list_method_query_dict.get("portal_type", []):
+      list_method_query_dict["portal_type"] = [x for x, _ in portal_type_list]
     list_method_custom = None
 
     # Search for non-editable documents - all reports goes here
@@ -626,8 +676,11 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
         "relative_url": traversed_document.getRelativeUrl().replace("/", "%2F"),
         "form_relative_url": "%s/%s" % (getFormRelativeUrl(form), field.id),
         "list_method": list_method_name,
-        "default_param_json": urlsafe_b64encode(json.dumps(list_method_query_dict))
+        "default_param_json": urlsafe_b64encode(
+          json.dumps(ensureSerializable(list_method_query_dict)))
       }
+      # once we imprint `default_params` into query string of 'list method' we
+      # don't want them to propagate to the query as well
       list_method_query_dict = {}
     elif (list_method_name == "portal_catalog"):
       pass
@@ -639,30 +692,10 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
         "script_id": script.id,
         "relative_url": traversed_document.getRelativeUrl().replace("/", "%2F"),
         "list_method": list_method_name,
-        "default_param_json": urlsafe_b64encode(json.dumps(list_method_query_dict))
+        "default_param_json": urlsafe_b64encode(json.dumps(ensureSerializable(list_method_query_dict)))
       }
       list_method_query_dict = {}
 
-#     row_list = list_method(limit=lines, portal_type=portal_types,
-#                            **default_params)
-#     line_list = []
-#     for row in row_list:
-#       document = row.getObject()
-#       line = {
-#         "url": url_template_dict["document_hal"] % {
-#           "root_url": site_root.absolute_url(),
-#           "relative_url": document.getRelativeUrl(),
-#           "script_id": script.id
-#         }
-#       }
-#       for property, title in columns:
-#         prop = document.getProperty(property)
-#         if same_type(prop, DateTime()):
-#           prop = "XXX Serialize DateTime"  
-#         line[title] = prop
-#         line["_relative_url"] = document.getRelativeUrl()
-#       line_list.append(line)
-
     result.update({
       "column_list": column_list,
       "search_column_list": search_column_list,
@@ -670,9 +703,9 @@ def renderField(traversed_document, field, form, value=None, meta_type=None, key
       "sort_column_list": sort_column_list,
       "editable_column_list": editable_column_list,
       "show_anchor": field.get_value("anchor"),
-      "portal_type": portal_types,
-      "lines": lines,
-      "default_params": default_params,
+      "portal_type": portal_type_list,
+      "lines": field.get_value('lines'),
+      "default_params": ensureSerializable(default_params),
       "list_method": list_method_name,
       "query": url_template_dict["jio_search_template"] % {
         "query": make_query({
@@ -820,26 +853,84 @@ def renderForm(traversed_document, form, response_dict, key_prefix=None, selecti
   }
 
   if (form.pt == 'report_view'):
+    # reports are expected to return list of ReportSection which is a wrapper
+    # around a form - thus we will need to render those forms
     report_item_list = []
     report_result_list = []
     for field in form.get_fields():
       if field.getRecursiveTemplateField().meta_type == 'ReportBox':
+        # ReportBox.render returns a list of ReportSection classes which are
+        # just containers for FormId(s) usually containing one ListBox
+        # and its search/query parameters hidden in `selection_params`
+        # `path` contains relative_url of intended CONTEXT for underlaying ListBox
         report_item_list.extend(field.render())
-    j = 0
-    for report_item in report_item_list:
-      report_context = report_item.getObject(portal)
-      report_prefix = 'x%s' % j
-      j += 1
+    # ERP5 Report document differs from a ERP5 Form in only one thing: it has
+    # `report_method` attached to it - thus we call it right here
+    if hasattr(form, 'report_method') and getattr(form, 'report_method', ""):
+      report_method_name = getattr(form, 'report_method')
+      report_method = getattr(traversed_document, report_method_name)
+      report_item_list.extend(report_method())
+
+    for report_index, report_item in enumerate(report_item_list):
+      report_context = report_item.getObject(traversed_document)
+      report_prefix = 'x%s' % report_index
       report_title = report_item.getTitle()
       # report_class = "report_title_level_%s" % report_item.getLevel()
       report_form = report_item.getFormId()
       report_result = {'_links': {}}
-      renderForm(traversed_document, getattr(report_context, report_item.getFormId()),
-                 report_result, key_prefix=report_prefix,
-                 selection_params=report_item.selection_params)
+      # some reports save a lot of unserializable data (datetime.datetime) and
+      # key "portal_type" (don't confuse with "portal_types" in ListBox) into
+      # report_item.selection_params thus we need to take that into account in
+      # ListBox field
+      #
+      # Selection Params are parameters for embedded ListBox's List Method
+      # and it must be passed in `default_json_param` field (might contain
+      # unserializable data types thus we need to take care of that
+      # In order not to lose information we put all ReportSection attributes
+      # inside the report selection params
+      report_form_params = report_item.selection_params.copy() \
+                           if report_item.selection_params is not None \
+                           else {}
+
+      if report_item.selection_name:
+        selection_name = report_prefix + "_" + report_item.selection_name
+        report_form_params.update(selection_name=selection_name)
+        # this should load selections with correct values - since it is modifying
+        # global state in the backend we have nothing more to do here
+        # I could not find where the code stores params in selection with render
+        # prefix - maybe it in some `render` method where it should not be
+        # Of course it is ugly, terrible and should be removed!
+        selection_tool = context.getPortalObject().portal_selections
+        selection_tool.getSelectionFor(selection_name, REQUEST)
+        selection_tool.setSelectionParamsFor(selection_name, report_form_params)
+        selection_tool.setSelectionColumns(selection_name, report_item.selection_columns)
+
+      if report_item.selection_columns:
+        report_form_params.update(selection_columns=report_item.selection_columns)
+      if report_item.selection_sort_order:
+        report_form_params.update(selection_sort_order=report_item.selection_sort_order)
+
+      # Report section is just a wrapper around form thus we render it right
+      # we keep traversed_document because its Portal Type Class should be
+      # addressable by the user = have actions (object_view) attached to it
+      # BUT! when Report Section defines `path` that is the new context for
+      # form rendering and subsequent searches...
+      renderForm(traversed_document if not report_item.path else report_context,
+                 getattr(report_context, report_item.getFormId()),
+                 report_result,
+                 key_prefix=report_prefix,
+                 selection_params=report_form_params)  # used to be only report_item.selection_params
+      # Report Title is important since there are more section on report page
+      # but often they render the same form with different data so we need to
+      # distinguish by the title at least.
+      report_result['title'] = report_title
       report_result_list.append(report_result)
-
     response_dict['report_section_list'] = report_result_list
+  # end-if report_section
+
+  for key, value in previous_request_other.items():
+    if value is not None:
+      REQUEST.set(key, value)
 
 # XXX form action update, etc
 def renderRawField(field):
@@ -882,6 +973,7 @@ def renderRawField(field):
 
 
 def renderFormDefinition(form, response_dict):
+  """Form "definition" is configurable in Zope admin: Form -> Order."""
   group_list = []
   for group in form.Form_getGroupTitleAndId():
 
@@ -1003,11 +1095,15 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
 
     # Add a link to the portal type if possible
     if not is_portal:
+      # traversed_document should always have its Portal Type in ERP5 Portal Types
+      # thus attached actions to it so it is viewable
+      document_type_name = traversed_document.getPortalType()
+      document_type = getattr(portal.portal_types, document_type_name, None)
+      if document_type is not None:
         result_dict['_links']['type'] = {
           "href": default_document_uri_template % {
             "root_url": site_root.absolute_url(),
-          "relative_url": portal.portal_types[traversed_document.getPortalType()]\
-                            .getRelativeUrl(), 
+            "relative_url": document_type.getRelativeUrl(),
             "script_id": script.id
           },
           "name": Base_translateString(traversed_document.getPortalType())
@@ -1123,7 +1219,6 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
       # renderer_form = traversed_document.restrictedTraverse(form_id, None)
       # XXX Proxy field are not correctly handled in traversed_document of web site
       renderer_form = getattr(traversed_document, form_id)
-  #     traversed_document.log(form_id)
       if (renderer_form is not None):
         embedded_dict = {
           '_links': {
@@ -1133,12 +1228,24 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
           }
         }
         # Put all query parameters (?reset:int=1&workflow_action=start_action) in request to mimic usual form display
+        query_param_dict = {}
         query_split = embedded_url.split('?', 1)
         if len(query_split) == 2:
           for query_parameter in query_split[1].split("&"):
-            query_key, query_value = query_parameter.split("=")
+            query_key, query_value = query_parameter.split('=')
+            # often + is used instead of %20 so we replace for space here
+            query_param_dict[query_key] = query_value.replace("+", " ")
+
+        # set URL params into REQUEST (just like it was sent by form)
+        for query_key, query_value in query_param_dict.items():
           REQUEST.set(query_key, query_value)
 
+        # unfortunatelly some people use Scripts as targets for Workflow
+        # transactions - thus we need to check and mitigate
+        if "Script" in renderer_form.meta_type:
+          # we suppose that the script takes only what is given in the URL params
+          return renderer_form(**query_param_dict)
+
         renderForm(traversed_document, renderer_form, embedded_dict)
         result_dict['_embedded'] = {
           '_view': embedded_dict
@@ -1227,7 +1334,7 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
   
     else:
       traversed_document_portal_type = traversed_document.getPortalType()
-      if traversed_document_portal_type == "ERP5 Form":
+      if traversed_document_portal_type in ("ERP5 Form", "ERP5 Report"):
         renderFormDefinition(traversed_document, result_dict)
         response.setHeader("Cache-Control", "private, max-age=1800")
         response.setHeader("Vary", "Cookie,Authorization,Accept-Encoding")
@@ -1255,14 +1362,13 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
     if action_dict:
       result_dict['_actions'] = action_dict
 
-  
   elif mode == 'search':
     #################################################
     # Portal catalog search
     #
     # Possible call arguments example:
     #  form_relative_url: portal_skins/erp5_web/WebSite_view/listbox
-    #  list_method: objectValues                      (Script providing listing)
+    #  list_method: "objectValues"                    (Script providing items)
     #  default_param_json: <base64 encoded JSON>      (Additional search params)
     #  query: <str>                                   (term for fulltext search)
     #  select_list: ['int_index', 'id', 'title', ...] (column names to select)
@@ -1309,9 +1415,13 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
         "sort_on": ()  # default is an empty tuple
       }
       if default_param_json is not None:
-        catalog_kw.update(byteify(json.loads(urlsafe_b64decode(default_param_json))))
+        catalog_kw.update(
+          ensureDeserialized(
+            byteify(
+              json.loads(urlsafe_b64decode(default_param_json)))))
       if query:
         catalog_kw["full_text"] = query
+
       if sort_on is not None:
         def parseSortOn(raw_string):
           """Turn JSON serialized array into a tuple (col_name, order)."""
@@ -1436,6 +1546,7 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
         }
 
       for select in select_list:
+        # every `select` can have a template field or be just a exotic getter for a value
         if editable_field_dict.has_key(select):
           # cell has a Form Field template thus render it using the field
           # fields are nice because they are standard
@@ -1461,8 +1572,12 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
           contents_item[select] = getAttrFromAnything(search_result, select, property_getter, property_hasser, {'brain': search_result})
       # endfor select
       contents_list.append(contents_item)
-    result_dict['_embedded']['contents'] = contents_list
+    result_dict['_embedded']['contents'] = ensureSerializable(contents_list)
 
+    # We should cleanup the selection if it exists in catalog params BUT
+    # we cannot because it requires escalated Permission.'modifyPortal' so
+    # the correct solution would be to ReportSection.popReport but unfortunately
+    # we don't have it anymore because we are asynchronous
     return result_dict
 
   elif mode == 'form':
@@ -1572,6 +1687,7 @@ hateoas = calculateHateoas(is_portal=temp_is_portal, is_site_root=temp_is_site_r
                            restricted=restricted, list_method=list_method,
                            default_param_json=default_param_json,
                            form_relative_url=form_relative_url)
+
 if hateoas == "":
   return hateoas
 else:

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

@@ -9,8 +9,11 @@ from functools import wraps
 from ZPublisher.HTTPRequest import HTTPRequest
 from ZPublisher.HTTPResponse import HTTPResponse
 
+import base64
+import DateTime
 import StringIO
 import json
+import re
 import urllib
 
 def changeSkin(skin_name):
@@ -639,6 +642,42 @@ class TestERP5Document_getHateoas_mode_traverse(ERP5HALJSONStyleSkinsMixin):
     self.assertEqual(result_dict['_embedded']['_view']['_actions']['put']['method'], 'POST')
 
 
+  @simulate('Base_getRequestUrl', '*args, **kwargs',
+      'return "http://example.org/bar"')
+  @simulate('Base_getRequestHeader', '*args, **kwargs',
+            'return "application/hal+json"')
+  @changeSkin('Hal')
+  def test_getHateoasDocument_listbox_vs_relation_inconsistency(self):
+    """Purpose of this test is to point to inconsistencies in search-enabled field rendering.
+
+    ListBox gets its Portal Types in `portal_type` as list of tuples whether
+    Relation Input receives `portal_types` and `translated_portal_types`
+    """
+    document = self._makeDocument()
+    # Drop editable permission
+    document.manage_permission('Modify portal content', [], 0)
+    document.Foo_view.listbox.ListBox_setPropertyList(
+      field_title = 'Foo Lines',
+      field_list_method = 'objectValues',
+      field_portal_types = 'Foo Line | Foo Line',
+    )
+    fake_request = do_fake_request("GET")
+    result = self.portal.web_site_module.hateoas.ERP5Document_getHateoas(
+      REQUEST=fake_request,
+      mode="traverse",
+      relative_url=document.getRelativeUrl(),
+      view="view")
+    self.assertEquals(fake_request.RESPONSE.status, 200)
+    self.assertEquals(fake_request.RESPONSE.getHeader('Content-Type'),
+      "application/hal+json"
+    )
+    result_dict = json.loads(result)
+    # ListBox rendering of allowed Portal Types
+    self.assertEqual(result_dict['_embedded']['_view']['listbox']['portal_type'], [['Foo Line', 'Foo Line']])
+    # Relation Input rendering of allowed Portal Types
+    self.assertEqual(result_dict['_embedded']['_view']['my_foo_category_title']['portal_types'], ['Category'])
+    self.assertEqual(result_dict['_embedded']['_view']['my_foo_category_title']['translated_portal_types'], ['Category'])
+
   @simulate('Base_getRequestUrl', '*args, **kwargs',
       'return "http://example.org/bar"')
   @simulate('Base_getRequestHeader', '*args, **kwargs',
@@ -712,6 +751,71 @@ class TestERP5Document_getHateoas_mode_traverse(ERP5HALJSONStyleSkinsMixin):
     self.assertFalse(result_dict['_embedded']['_view'].has_key('_actions'))
 
 
+  @simulate('Base_getRequestUrl', '*args, **kwargs',
+      'return "http://example.org/bar"')
+  @simulate('Base_getRequestHeader', '*args, **kwargs',
+            'return "application/hal+json"')
+  @changeSkin('Hal')
+  def test_getHateoasDocument_listbox_list_method_params(self):
+    """Ensure that `list_method` of ListBox receives specified parameters."""
+    document = self._makeDocument()
+    document.manage_permission('Modify portal content', [], 0)
+    # pass custom list method which expect input arguments
+    document.Foo_view.listbox.ListBox_setPropertyList(
+      field_title = 'Foo Lines',
+      field_list_method = 'Foo_listWithInputParams',
+      field_portal_types = 'Foo Line | Foo Line',
+      field_columns = 'id|ID\ntitle|Title\nquantity|Quantity\nstart_date|Date\ncatalog.uid|Uid')
+
+    now = DateTime.DateTime()
+    tomorrow = now + 1
+
+    fake_request = do_fake_request("GET", data=(
+      ('start_date', now.ISO()),
+      ('stop_date', tomorrow.ISO()))
+    )
+    # I tried to implement the standard way (see `data` param in do_fake_request)
+    # but for some reason it does not work...so we hack our way around
+    fake_request.set('start_date', now.ISO())
+    fake_request.set('stop_date', tomorrow.ISO())
+    result = self.portal.web_site_module.hateoas.ERP5Document_getHateoas(
+      REQUEST=fake_request,
+      mode="traverse",
+      relative_url=document.getRelativeUrl(),
+      form=document.restrictedTraverse('portal_skins/erp5_ui_test/Foo_view'),
+      view="view"
+      )
+
+    self.assertEquals(fake_request.RESPONSE.status, 200)
+    self.assertEquals(fake_request.RESPONSE.getHeader('Content-Type'),
+      "application/hal+json"
+    )
+    result_dict = json.loads(result)
+    list_method_template = \
+      result_dict['_embedded']['_view']['listbox']['list_method_template']
+    # default_param_json must not be empty because our custom list method
+    # specifies input parameters - they need to be filled from REQUEST
+    self.assertIn('default_param_json', list_method_template)
+    default_param_json = json.loads(
+      base64.b64decode(
+        re.search(r'default_param_json=([^\{&]+)',
+                  list_method_template).group(1)))
+    self.assertIn("start_date", default_param_json)
+    self.assertEqual(default_param_json["start_date"], now.ISO())
+    self.assertIn("stop_date", default_param_json)
+    self.assertEqual(default_param_json["stop_date"], tomorrow.ISO())
+    # reset listbox properties to defaults
+    document.Foo_view.listbox.ListBox_setPropertyList(
+      field_title = 'Foo Lines',
+      field_list_method = 'objectValues',
+      field_portal_types = 'Foo Line | Foo Line',
+      field_stat_method = 'portal_catalog',
+      field_stat_columns = 'quantity | Foo_statQuantity',
+      field_editable = 1,
+      field_columns = 'id|ID\ntitle|Title\nquantity|Quantity\nstart_date|Date\ncatalog.uid|Uid',
+      field_editable_columns = 'id|ID\ntitle|Title\nquantity|quantity\nstart_date|Date',
+      field_search_columns = 'id|ID\ntitle|Title\nquantity|Quantity\nstart_date|Date',)
+
   @simulate('Base_getRequestUrl', '*args, **kwargs',
       'return "http://example.org/bar"')
   @simulate('Base_getRequestHeader', '*args, **kwargs',
@@ -1185,7 +1289,6 @@ class TestERP5Document_getHateoas_mode_bulk(ERP5HALJSONStyleSkinsMixin):
     self.assertEquals(fake_request.RESPONSE.status, 405)
     self.assertEquals(result, "")
 
-
   @simulate('Base_getRequestUrl', '*args, **kwargs',
       'return "http://example.org/bar"')
   @simulate('Base_getRequestHeader', '*args, **kwargs',
@@ -1324,6 +1427,7 @@ class TestERP5Document_getHateoas_mode_worklist(ERP5HALJSONStyleSkinsMixin):
 
     self.assertEqual(result_dict['_debug'], "worklist")
 
+
 class TestERP5Document_getHateoas_translation(ERP5HALJSONStyleSkinsMixin):
   code_string = "\
 from Products.CMFCore.utils import getToolByName\n\

bt5/erp5_ui_test/SkinTemplateItem/portal_skins/erp5_ui_test/Foo_listWithInputParams.py

+"""Foo_listWithInputParams is here only to test passing parameters from REQUEST via introspection in RenderJS UI.
+
+We expect DateTime parameters thus they have to undergo a serialization/deserialization process.
+"""
+
+from DateTime import DateTime
+
+assert isinstance(start_date, DateTime), "start_date is instance of {!s} instead of DateTime!".format(type(start_date))
+assert isinstance(stop_date, DateTime), "stop_date is instance of {!s} instead of DateTime!".format(type(stop_date))
+
+return context.listFolder(portal_type='Foo Line')

bt5/erp5_ui_test/SkinTemplateItem/portal_skins/erp5_ui_test/Foo_listWithInputParams.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Python Script" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>Script_magic</string> </key>
+            <value> <int>3</int> </value>
+        </item>
+        <item>
+            <key> <string>_bind_names</string> </key>
+            <value>
+              <object>
+                <klass>
+                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
+                </klass>
+                <tuple/>
+                <state>
+                  <dictionary>
+                    <item>
+                        <key> <string>_asgns</string> </key>
+                        <value>
+                          <dictionary>
+                            <item>
+                                <key> <string>name_container</string> </key>
+                                <value> <string>container</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_context</string> </key>
+                                <value> <string>context</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_m_self</string> </key>
+                                <value> <string>script</string> </value>
+                            </item>
+                            <item>
+                                <key> <string>name_subpath</string> </key>
+                                <value> <string>traverse_subpath</string> </value>
+                            </item>
+                          </dictionary>
+                        </value>
+                    </item>
+                  </dictionary>
+                </state>
+              </object>
+            </value>
+        </item>
+        <item>
+            <key> <string>_params</string> </key>
+            <value> <string>start_date, stop_date=None, **kwargs</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>Foo_listWithInputParams</string> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Python Script</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>