fixes #7360 by setting resources.metadata

IPython/html/nbconvert/handlers.py

@@ -6,6 +6,7 b''
 import io
 import os
 import zipfile
+import collections
 
 from tornado import web
 
@@ -16,6 +17,7 b' from ..base.handlers import ('
 from IPython.nbformat import from_dict
 
 from IPython.utils.py3compat import cast_bytes
+from IPython.utils import text
 
 def find_resource_files(output_files_dir):
     files = []
@@ -89,7 +91,16 b' class NbconvertFileHandler(IPythonHandler):'
         self.set_header('Last-Modified', model['last_modified'])
         
         try:
-            output, resources = exporter.from_notebook_node(model['content'])
+            output, resources = exporter.from_notebook_node(
+                model['content'],
+                resources={
+                    "metadata": {
+                        "name": name[:name.rfind('.')],
+                        "modified_date": (model['last_modified']
+                            .strftime(text.date_format))
+                    }
+                }
+            )
         except Exception as e:
             raise web.HTTPError(500, "nbconvert failed: %s" % e)
 

IPython/nbconvert/exporters/exporter.py

@@ -241,7 +241,9 b' class Exporter(LoggingConfigurable):'
         #Make sure the metadata extension exists in resources
         if 'metadata' in resources:
             if not isinstance(resources['metadata'], ResourcesDict):
-                resources['metadata'] = ResourcesDict(resources['metadata'])
+                new_metadata = ResourcesDict()
+                new_metadata.update(resources['metadata'])
+                resources['metadata'] = new_metadata
         else:
             resources['metadata'] = ResourcesDict()
             if not resources['metadata']['name']: