trainings: fix 404

app/controllers/trainings_controller.rb

@@ -9,7 +9,7 @@ class TrainingsController < ApplicationController
 
   before_filter :authenticate, except: [:auth, :auth_callback, :pay_callback]
 
-  before_filter :find_tag_id
+  before_filter :find_tag_id, only: [:show, :create, :update, :enroll, :test]
 
   before_filter :find_training, only: [:show, :test]
 
@@ -270,7 +270,7 @@ class TrainingsController < ApplicationController
 
   def authenticate
     if Rails.env.development?
-      # session[:wechat_open_id] = "o5fSc0607iR3rp4-h_VnuBTp8CiM"
+      session[:wechat_open_id] = "o5fSc0607iR3rp4-h_VnuBTp8CiM"
     end
 
     unless session[:wechat_open_id].present?