diff --git a/src/calibre/library/server/ajax.py b/src/calibre/library/server/ajax.py
index cd41bb267e..eb0e60baae 100644
--- a/src/calibre/library/server/ajax.py
+++ b/src/calibre/library/server/ajax.py
@@ -24,6 +24,7 @@ from calibre import force_unicode, isbytestring
 from calibre.library.field_metadata import category_icon_map
 
 class Endpoint(object):  # {{{
+
     'Manage mime-type json serialization, etc.'
 
     def __init__(self, mimetype='application/json; charset=utf-8',
@@ -119,7 +120,7 @@ class AjaxServer(object):
 
     # Get book metadata {{{
     def ajax_book_to_json(self, book_id, get_category_urls=True,
-                          device_compatible=False):
+                          device_compatible=False, device_for_template=None):
         mi = self.db.get_metadata(book_id, index_is_id=True)
 
         if not device_compatible:
@@ -191,12 +192,24 @@ class AjaxServer(object):
             else:
                 series = ''
             data['_series_sort_'] = series
+            if device_for_template:
+                import posixpath
+                from calibre.devices.utils import create_upload_path
+                from calibre.utils.filenames import ascii_filename as sanitize
+                from calibre.customize.ui import device_plugins
+
+                for device_class in device_plugins():
+                    if device_class.__class__.__name__ == device_for_template:
+                        template = device_class.save_template()
+                        data['_filename_'] = create_upload_path(mi, book_id,
+                                template, sanitize, path_type=posixpath)
+                        break
 
         return data, mi.last_modified
 
     @Endpoint(set_last_modified=False)
     def ajax_book(self, book_id, category_urls='true', id_is_uuid='false',
-                  device_compatible='false'):
+                  device_compatible='false', device_for_template=None):
         '''
         Return the metadata of the book as a JSON dictionary.
 
@@ -213,7 +226,8 @@ class AjaxServer(object):
                 book_id = int(book_id)
             data, last_modified = self.ajax_book_to_json(book_id,
                     get_category_urls=category_urls.lower()=='true',
-                    device_compatible=device_compatible.lower()=='true')
+                    device_compatible=device_compatible.lower()=='true',
+                    device_for_template=device_for_template)
         except:
             raise cherrypy.HTTPError(404, 'No book with id: %r'%book_id)
 
@@ -223,7 +237,7 @@ class AjaxServer(object):
         return data
 
     @Endpoint(set_last_modified=False)
-    def ajax_books(self, ids=None, category_urls='true', id_is_uuid='false'):
+    def ajax_books(self, ids=None, category_urls='true', id_is_uuid='false', device_for_template=None):
         '''
         Return the metadata for a list of books specified as a comma separated
         list of ids. The metadata is returned as a dictionary mapping ids to
@@ -250,7 +264,7 @@ class AjaxServer(object):
         for book_id in ids:
             try:
                 data, last_modified = self.ajax_book_to_json(book_id,
-                        get_category_urls=gcu)
+                        get_category_urls=gcu, device_for_template=device_for_template)
             except:
                 ans[book_id] = None
             else:
@@ -617,5 +631,4 @@ class AjaxServer(object):
                 'book_ids':ids
         }
 
-
     # }}}