py2/py3: make erp5_hal_json_style compatible with Python 3.

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/Base_callDialogMethod.py

@@ -15,16 +15,17 @@ There are runtime values hidden in every dialog form (injected by getHateoas Scr
 from erp5.component.module.Log import log, WARNING
 from Products.Formulator.Errors import FormValidationError
 import json
+import six
 
 # http://stackoverflow.com/a/13105359
 def byteify(value):
   if isinstance(value, dict):
-    return {byteify(key): byteify(value) for key, value in value.iteritems()}
+    return {byteify(key): byteify(value) for key, value in six.iteritems(value)}
   elif isinstance(value, list):
     return [byteify(element) for element in value]
   elif isinstance(value, tuple):
     return tuple(byteify(element) for element in value)
-  elif isinstance(value, unicode):
+  elif six.PY2 and isinstance(value, six.text_type):
     return value.encode('utf-8')
   else:
     return value

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/Base_renderMessage.py

@@ -6,8 +6,9 @@ Return JSON with message to be displayed and set according HTTP STATUS for messa
 """
 import json
 from erp5.component.module.Log import WARNING, ERROR
+import six
 
-if isinstance(level, (str, unicode)):
+if isinstance(level, (str, six.text_type)):
   if level.lower() == "error":
     response_code = 500
   elif level.lower().startswith("warn"):

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/Workflow_statusModify.py

@@ -3,6 +3,7 @@ from Products.Formulator.Errors import FormValidationError
 from Products.ERP5Type.Core.Workflow import ValidationFailed
 from Products.ERP5Type.Message import translateString
 from erp5.component.module.Log import WARNING
+import six
 
 portal = context.getPortalObject()
 request = REQUEST or context.REQUEST
@@ -43,7 +44,7 @@ for f in form.get_fields():
 listbox = request.get('listbox') # XXX: hardcoded field name
 if listbox is not None:
   listbox_line_list = []
-  for key, value in sorted(listbox.iteritems()):
+  for key, value in sorted(six.iteritems(listbox)):
     value['listbox_key'] = key
     listbox_line_list.append(value)
   doaction_param_list['listbox'] = tuple(listbox_line_list)