add avatars

app.lua

@@ -1,9 +1,17 @@
 local lapis = require("lapis")
 local app = lapis.Application()
 
+local util = require("util")
+
 app:enable("etlua")
 app.layout = require "views.base"
 
+local function inject_methods(req)
+  req.avatar_url = util.get_user_avatar_url
+end
+
+app:before_filter(inject_methods)
+
 app:include("apps.users", {path = "/user"})
 
 app:get("/", function()