Allow per-user stylesheet for Buefy themes

there is not yet a way for user to select from available options though

tailbone/subscribers.py

@@ -44,6 +44,7 @@ from tailbone import helpers
 from tailbone.db import Session
 from tailbone.config import csrf_header_name
 from tailbone.menus import make_simple_menus
+from tailbone.util import should_use_buefy
 
 
 def new_request(event):
@@ -145,6 +146,16 @@ def before_render(event):
             renderer_globals['background_color'] = request.rattail_config.get(
                 'tailbone', 'background_color')
 
+        # maybe set custom stylesheet for Buefy themes
+        if should_use_buefy(request):
+            css = None
+            if request.user:
+                css = request.rattail_config.get('tailbone.{}'.format(request.user.uuid),
+                                                 'buefy_css')
+            if not css:
+                css = request.rattail_config.get('tailbone', 'theme.falafel.buefy_css')
+            renderer_globals['buefy_css'] = css
+
         # here we globally declare widths for grid filter pseudo-columns
         widths = request.rattail_config.get('tailbone', 'grids.filters.column_widths')
         if widths:

tailbone/templates/themes/falafel/base.mako

@@ -151,7 +151,6 @@
 </%def>
 
 <%def name="buefy_styles()">
-  <% buefy_css = request.rattail_config.get('tailbone', 'theme.falafel.buefy_css') %>
   % if buefy_css:
       ## custom Buefy CSS
       ${h.stylesheet_link(buefy_css)}