erp5_data_notebook bt5: Add external method to display error from error_log

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

@@ -9,6 +9,9 @@ import ast
 import types
 
 mime_type = 'text/plain'
+# IPython expects 2 status message - 'ok', 'error'
+status = u'ok'
+ename, evalue, tb_list = None, None, None
 
 def Base_compileJupyterCode(self, jupyter_code, old_local_variable_dict):
   """
@@ -47,8 +50,11 @@ def Base_compileJupyterCode(self, jupyter_code, old_local_variable_dict):
   # Updating global variable mime_type to its original value
   # Required when call to Base_displayImage is made which is changing
   # the value of gloabl mime_type
-  global mime_type
+  # Same for status, ename, evalue, tb_list
+  global mime_type, status, ename, evalue, tb_list
   mime_type = 'text/plain'
+  status = u'ok'
+  ename, evalue, tb_list = None, None, None
 
   # Other way would be to use all the globals variables instead of just an empty
   # dictionary, but that might hamper the speed of exec or eval.
@@ -59,16 +65,13 @@ def Base_compileJupyterCode(self, jupyter_code, old_local_variable_dict):
   globals_dict = globals()
   g['context'] = self
   result_string = ''
-  ename, evalue, tb_list = None, None, None
   # Update globals dict and use it while running exec command
   g.update(old_local_variable_dict['variables'])
 
-  # IPython expects 2 status message - 'ok', 'error'
   # XXX: The focus is on 'ok' status only, we're letting errors to be raised on
   # erp5 for now, so as not to hinder the transactions while catching them.
   # TODO: This can be refactored by using client side error handling instead of
   # catching errors on server/erp5.
-  status = u'ok'
   local_variable_dict = old_local_variable_dict
 
   # Execute only if jupyter_code is not empty
@@ -294,3 +297,27 @@ def Base_saveImage(self, plot=None, reference=None, **kw):
     filename=filename)
 
   return None
+
+def getError(self, previous=1):
+  """
+  Show error to the frontend and change status of code as 'error' from 'ok'
+  
+  Parameters
+  ----------
+  previous: Type - int. The number of the error you want to see.
+  Ex: 1 for last error
+      2 for 2nd last error and so on..
+
+  """
+  error_log_list = self.error_log._getLog()
+  if error_log_list:
+    if isinstance(previous, int):
+      # We need to get the object for last index of list
+      error = error_log_list[-previous]
+  global status, ename, evalue, tb_list
+  status = u'error'
+  ename = unicode(error['type'])
+  evalue = unicode(error['value'])
+  tb_list = [l+'\n' for l in error['tb_text'].split('\n')]
+
+  return None

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

@@ -46,11 +46,12 @@
             <key> <string>text_content_warning_message</string> </key>
             <value>
               <tuple>
-                <string>W: 50,  2: Using the global statement (global-statement)</string>
-                <string>W: 91,  8: Use of exec (exec-used)</string>
-                <string>W:115,  8: Use of exec (exec-used)</string>
-                <string>W:121,  8: Use of exec (exec-used)</string>
-                <string>W:216,  4: Using the global statement (global-statement)</string>
+                <string>W: 54,  2: Using the global statement (global-statement)</string>
+                <string>W: 94,  8: Use of exec (exec-used)</string>
+                <string>W:118,  8: Use of exec (exec-used)</string>
+                <string>W:124,  8: Use of exec (exec-used)</string>
+                <string>W:219,  4: Using the global statement (global-statement)</string>
+                <string>W:317,  2: Using the global statement (global-statement)</string>
               </tuple>
             </value>
         </item>

bt5/erp5_data_notebook/SkinTemplateItem/portal_skins/erp5_data_notebook/getError.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>getError</string> </value>
+        </item>
+        <item>
+            <key> <string>_module</string> </key>
+            <value> <string>JupyterCompile</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>getError</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>getError</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>