Do not assert that data comes from getData,

let convert method return the expected data (for TextDocument, data comes from
text_content).
Also, convert method only should raise NotConvertedError if needed


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35218 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Document.py

@@ -967,11 +967,11 @@ class Document(PermanentURLMixIn, XMLObject, UrlMixIn, CachedConvertableMixin, S
       Based on the document content, find out as many properties as needed.
       returns properties which should be set on the document
     """
-    if getattr(self, 'hasData', None) is not None and not self.hasData():
+    # accesss data through convert
+    mime, content = self.convert(None)
+    if not content:
        # if document is empty, we will not find anything in its content
-      return dict()
-    if not self.hasBaseData():
-      raise NotConvertedError
+      return {}
     method = self._getTypeBasedMethod('getPropertyDictFromContent',
         fallback_script_id='Document_getPropertyDictFromContent')
     return method()