Check fields uses existing scripts as external validator

If we rename a script used as external validator, we don't have way of detecting that this script might be used, so add to the "static checks" a check that for every field referencing an external validator, this validator can actually be traversed.

/reviewed-on !1031

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/SkinsTool_checkFieldExternalValidator.py

+"""Print all field that uses non existing scripts as external_validator
+"""
+portal = context.getPortalObject()
+restrictedTraverse = portal.restrictedTraverse
+skins_tool = portal.portal_skins
+
+for skin_name, skin_path_list in skins_tool.getSkinPaths():
+  skins_tool.changeSkin(skin_name)
+  for skin_folder in skin_path_list.split(','):
+    for form_path, form in skins_tool.ZopeFind(
+        skins_tool[skin_folder],
+        obj_metatypes=['ERP5 Form', 'ERP5 Report'],
+        search_sub=1,
+    ):
+      for field in form.get_fields():
+        if field.meta_type == 'ProxyField':
+          if field.getRecursiveTemplateField(
+          ) is None or field.get_recursive_tales('external_validator'):
+            continue
+          try:
+            external_validator = field.get_recursive_orig_value(
+                'external_validator')
+          except KeyError:
+            continue
+        else:
+          if field.get_tales('external_validator'):
+            continue
+          try:
+            external_validator = field.get_orig_value('external_validator')
+          except KeyError:
+            continue
+        if external_validator:
+          method_name = external_validator.getMethodName()
+          if restrictedTraverse(method_name, None) is None:
+            print "{form_path}/{field_id} uses an external validator non existant in {skin_name}: {method_name}".format(
+                form_path=form_path,
+                field_id=field.getId(),
+                skin_name=skin_name,
+                method_name=method_name,
+            )
+
+return printed

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/SkinsTool_checkFieldExternalValidator.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></string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>SkinsTool_checkFieldExternalValidator</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

product/ERP5/tests/testXHTML.py

@@ -216,6 +216,10 @@ class TestXHTMLMixin(ERP5TypeTestCase):
                      "Repeated listbox selection names:\n" +
                      portal_skins.SkinsTool_checkDuplicateSelectionName())
 
+  def test_SkinsTool_checkFieldExternalValidator(self):
+    self.assertFalse(
+      self.portal.portal_skins.SkinsTool_checkFieldExternalValidator())
+
   def test_javascript_lint(self):
     skins_tool = self.portal.portal_skins
     path_list = []