Add initial/basic support for configuring "included views"

also stub for managing "poser views"

tailbone/menus.py

@@ -27,21 +27,42 @@ App Menus
 from __future__ import unicode_literals, absolute_import
 
 import re
+import logging
 
-from rattail.util import import_module_path, prettify
+from rattail.util import import_module_path, prettify, simple_error
+
+from webhelpers2.html import tags, HTML
 
 from tailbone.db import Session
 
 
+log = logging.getLogger(__name__)
+
+
 def make_simple_menus(request):
     """
     Build the main menu list for the app.
     """
-    # first try to make menus from config
-    raw_menus = make_menus_from_config(request)
+    # first try to make menus from config, but this is highly
+    # susceptible to failure, so try to warn user of problems
+    raw_menus = None
+    try:
+        raw_menus = make_menus_from_config(request)
+    except Exception as error:
+        # TODO: these messages show up multiple times on some pages?!
+        # that must mean the BeforeRender event is firing multiple
+        # times..but why??  seems like there is only 1 request...
+        log.warning("failed to make menus from config", exc_info=True)
+        request.session.flash(simple_error(error), 'error')
+        request.session.flash("Menu config is invalid! Reverting to menus "
+                              "defined in code!", 'warning')
+        msg = HTML.literal('Please edit your {} ASAP.'.format(
+            tags.link_to("Menu Config", request.route_url('configure_menus'))))
+        request.session.flash(msg, 'warning')
+
     if not raw_menus:
 
-        # no config, so import/invoke function to build them
+        # no config, so import/invoke code function to build them
         menus_module = import_module_path(
             request.rattail_config.require('tailbone', 'menus'))
         if not hasattr(menus_module, 'simple_menus') or not callable(menus_module.simple_menus):