Small performance optimization.

TODO.txt

 - Core
-    - Pregenerate URLs for menu
-    - Calendar - add validation for time without seconds (automatically add seconds)
     - View Site button?
 - Model Admin
     - Ability to sort by fields that are not visible?
@@ -8,10 +6,8 @@
     - Form Fields
         - Override field class by field name
         - Verify how boolean field is rendered
-    - Search
-        - Rename init_search
     - Filters
-        - Custom filters for date fields
+        - Custom filters for date fields?
     - Paginator class
     - Custom CSS/JS in admin interface
     - Checkboxes and mass operations
@@ -25,5 +21,6 @@
     - File size restriction
 - Localization
 - Unit tests
+    - Form generation tests
 - Documentation
     - Add all new stuff
\ No newline at end of file

flask_adminex/base.py

@@ -222,6 +222,7 @@ class MenuItem(object):
         self._view = view
         self._children = []
         self._children_urls = set()
+        self._cached_url = None
 
         self.url = None
         if view is not None:
@@ -235,8 +236,11 @@ class MenuItem(object):
         if self._view is None:
             return None
 
-        # TODO: Optimize me
-        return url_for('%s.%s' % (self._view.endpoint, self._view._default_view))
+        if self._cached_url:
+            return self._cached_url
+
+        self._cached_url = url_for('%s.%s' % (self._view.endpoint, self._view._default_view))
+        return self._cached_url
 
     def is_active(self, view):
         if view == self._view: