deferred_style: factorize request argument filtering

This code was slightly different in three places:
 * Base_activateSimpleView: only use request.form.items()
 * Base_activateReport: use request.items()
 * Base_computeReportSection: use request.items()

request.items returns all items from request.other, request.form and
request.cookies.
In all cases, we are interested in request.form, so that report runs
with the same user input in request. We want to restore restore
request.other for Base_computeReportSection , but it does not harm in
other cases.
We always drop cookies to fix  #20180220-1DBF516 (as a consequence the
request will not strictly be identical, but rendering reports should not
depend on cookies)

bt5/erp5_deferred_style/SkinTemplateItem/portal_skins/erp5_deferred_style/Base_activateSimpleView.py

@@ -20,22 +20,9 @@ if person_value.getDefaultEmailText('') in ('', None):
   return context.Base_redirect('view', keep_items=dict(
               portal_status_message=translateString(
                         "You haven't defined your email address")))
-  
+
 # save request parameters
-# XXX we exclude some reserved names in a very ad hoc way
-request_form = {}
-for k, v in request.form.items():
-  if k not in ('TraversalRequestNameStack', 'AUTHENTICATED_USER', 'URL',
-      'SERVER_URL', 'AUTHENTICATION_PATH', 'USER_PREF_LANGUAGES', 'PARENTS',
-      'PUBLISHED', 'AcceptLanguage', 'AcceptCharset', 'RESPONSE',
-      'ACTUAL_URL'):
-    # XXX proxy fields stores a cache in request.other that cannot be pickled
-    if str(k).startswith('field__proxyfield'):
-      continue
-    # Remove FileUpload parameters
-    elif getattr(v, 'headers', ''):
-      continue
-    request_form[k] = v
+request_form = portal.ERP5Site_filterRequestForDeferredStyle(request)
 
 localizer_language = portal.Localizer.get_selected_language()
 

bt5/erp5_deferred_style/SkinTemplateItem/portal_skins/erp5_deferred_style_core/Base_activateReport.py

@@ -22,21 +22,8 @@ format = request.get('format', '')
 skin_name = request['deferred_portal_skin']
 
 # save request parameters (after calling the report_method which may tweak the
-# request). XXX we exclude some reserved names in a very ad hoc way
-request_other = {}
-for k, v in request.items():
-  if k not in ('TraversalRequestNameStack', 'AUTHENTICATED_USER', 'URL',
-      'SERVER_URL', 'AUTHENTICATION_PATH', 'USER_PREF_LANGUAGES', 'PARENTS',
-      'PUBLISHED', 'AcceptLanguage', 'AcceptCharset', 'RESPONSE', 'SESSION',
-      'ACTUAL_URL'):
-    # XXX proxy fields stores a cache in request.other that cannot be pickled
-    if same_type(k, '') and k.startswith('field__proxyfield'):
-      continue
-    # Remove FileUpload parameters
-    elif getattr(v, 'headers', ''):
-      continue
-    request_other[k] = v
-
+# request).
+request_other = portal.ERP5Site_filterRequestForDeferredStyle(request)
 
 
 context.activate(activity="SQLQueue", tag=tag, after_tag=after_tag,

bt5/erp5_deferred_style/SkinTemplateItem/portal_skins/erp5_deferred_style_core/Base_computeReportSection.py

@@ -16,19 +16,7 @@ else:
   raise ValueError, 'form meta_type (%r) unknown' %(form.meta_type,)
 
 # Rebuild request_other as report section can have modify request content
-request_other = {}
-for k, v in request.items():
-  if k not in ('TraversalRequestNameStack', 'AUTHENTICATED_USER', 'URL',
-      'SERVER_URL', 'AUTHENTICATION_PATH', 'USER_PREF_LANGUAGES', 'PARENTS',
-      'PUBLISHED', 'AcceptLanguage', 'AcceptCharset', 'RESPONSE', 'SESSION',
-      'ACTUAL_URL'):
-    # XXX proxy fields stores a cache in request.other that cannot be pickled
-    if same_type(k, '') and str(k).startswith('field__proxyfield'):
-      continue
-    # Remove FileUpload parameters
-    elif getattr(v, 'headers', ''):
-      continue
-    request_other[k] = v
+request_other = portal.ERP5Site_filterRequestForDeferredStyle(request)
 
 localizer_language = portal.Localizer.get_selected_language()
 active_process = portal.portal_activities.newActiveProcess()

bt5/erp5_deferred_style/SkinTemplateItem/portal_skins/erp5_deferred_style_core/ERP5Site_filterRequestForDeferredStyle.py

+request_other = {}
+
+for k, v in request.other.items() + request.form.items():
+  if k not in ('TraversalRequestNameStack', 'AUTHENTICATED_USER', 'URL',
+      'SERVER_URL', 'AUTHENTICATION_PATH', 'USER_PREF_LANGUAGES', 'PARENTS',
+      'PUBLISHED', 'AcceptLanguage', 'AcceptCharset', 'RESPONSE', 'SESSION',
+      'ACTUAL_URL', 'HTTP_COOKIE'):
+    # XXX proxy fields stores a cache in request.other that cannot be pickled
+    if same_type(k, '') and k.startswith('field__proxyfield'):
+      continue
+    # Remove FileUpload parameters
+    elif getattr(v, 'headers', ''):
+      continue
+    request_other[k] = v
+
+return request_other

bt5/erp5_deferred_style/SkinTemplateItem/portal_skins/erp5_deferred_style_core/ERP5Site_filterRequestForDeferredStyle.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
+    </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>request</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>ERP5Site_filterRequestForDeferredStyle</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>