Added a warning about using old references on Jupyter notebooks

@Tyagov @luke 

See the MR at slapos [here](nexedi/slapos!177).

/reviewed-on nexedi/erp5!283

bt5/erp5_data_notebook/ExtensionTemplateItem/portal_components/extension.erp5.JupyterCompile.py

@@ -867,9 +867,6 @@ class ImportFixer(ast.NodeTransformer):
       if not self.import_func_dict.get(name):
         final_module_names.append(name)
 
-    log("module_names[0]: " + module_names[0])
-    log("result_name: " + result_name)
-
     if final_module_names:
       # try to import module before it is added to environment
       # this way if user tries to import non existent module Exception
@@ -879,8 +876,6 @@ class ImportFixer(ast.NodeTransformer):
       empty_function = self.newEmptyFunction("%s_setup" %result_name)
       return_dict = self.newReturnDict(final_module_names)
 
-      log(return_dict)
-
       empty_function.body = [node, return_dict]
       environment_set = self.newEnvironmentSetCall("%s_setup" %result_name)
       warning = self.newImportWarningCall(root_module_name, result_name)
@@ -1180,3 +1175,12 @@ def erp5PivotTableUI(self, df):
   iframe_host = self.REQUEST['HTTP_X_FORWARDED_HOST'].split(',')[0]
   url = "https://%s/erp5/Base_displayPivotTableFrame?key=%s" % (iframe_host, key)
   return IFrame(src=url, width='100%', height='500')
+  
+def Base_checkExistingReference(self, reference):
+  existing_notebook = self.portal_catalog.getResultValue(
+                         owner=self.portal_membership.getAuthenticatedMember().getUserName(),
+                         portal_type='Data Notebook',
+                         reference=reference)
+  if not existing_notebook is None:
+    return True
+  return False

bt5/erp5_data_notebook/SkinTemplateItem/portal_skins/erp5_data_notebook/Base_checkExistingReference.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="ExternalMethod" module="Products.ExternalMethod.ExternalMethod"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_function</string> </key>
+            <value> <string>Base_checkExistingReference</string> </value>
+        </item>
+        <item>
+            <key> <string>_module</string> </key>
+            <value> <string>JupyterCompile</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>Base_checkExistingReference</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string></string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_data_notebook/TestTemplateItem/portal_components/test.erp5.testExecuteJupyter.py

@@ -32,6 +32,8 @@ from Products.ERP5Type.tests.utils import createZODBPythonScript, removeZODBPyth
 import time
 import json
 import base64
+import random
+import string
 
 
 class TestExecuteJupyter(ERP5TypeTestCase):
@@ -857,3 +859,25 @@ print dig
     self.assertEquals(result['status'], 'ok')
     self.assertEquals(result['code_result'].strip(), '0123456789')
     
+  def testReferenceWarning(self):
+    '''
+      Tests Base_checkExistingReference in JupyterCompile.
+    '''
+    self.login('dev_user')
+    
+    notebook_reference = u''.join(random.choice(string.ascii_lowercase) for _ in range(30))
+    notebook_title = u''.join(random.choice(string.ascii_lowercase) for _ in range(30))
+    
+    notebook_module = self.portal.getDefaultModule(portal_type='Data Notebook')
+    data_notebook = notebook_module.DataNotebookModule_addDataNotebook(
+                                      title=notebook_title,
+                                      reference=notebook_reference,
+                                      batch_mode=True)
+    self.tic()
+        
+    result = self.portal.Base_checkExistingReference(
+      reference=notebook_reference,
+    )
+    self.tic()
+
+    self.assertEquals(result, True)