trainings: fix require login

app/controllers/trainings_controller.rb

@@ -3,6 +3,7 @@ require 'base64'
 class TrainingsController < ApplicationController
   wechat_responder
 
+  skip_before_filter :check_if_login_required
   skip_before_filter :verify_signature, only: [:show, :create, :update, :test, :enroll]
 
   ROOT_URL = ENV["wechat_url"] || "#{Setting.protocol}://#{Setting.host_name}"
@@ -225,7 +226,7 @@ class TrainingsController < ApplicationController
   # 用于权限跳转
   def auth
     state = params[:state]
-    url = "#{ROOT_URL}/trainings/auth_callback"
+    url = CGI.escape("#{ROOT_URL}/trainings/auth_callback?return_url=#{params[:return_url]}")
     authorize_url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=#{Wechat.config.appid}&redirect_uri=#{url}&response_type=code&scope=snsapi_base&state=#{state}&connect_redirect=1#wechat_redirect"
     redirect_to authorize_url
   end
@@ -237,26 +238,9 @@ class TrainingsController < ApplicationController
       render 'wechats/open_wechat', layout: nil and return
     end
 
-
     session[:wechat_open_id] = open_id
 
-    # 考虑状态
-    # 1. 无记录或未支付
-    # 2. 已填写未付款
-    #
-    @training = current_training
-
-    url = ''
-    if !@training
-      url = training_path(id: @tag_id)
-    elsif !@training.pay?
-      url = enroll_training_path(id: @tag_id)
-    else
-      url = result_training_path(id: @tag_id)
-    end
-
-    redirect_to url
-
+    redirect_to params[:return_url].present? ? params[:return_url] : '/'
   end
 
   def test
@@ -270,11 +254,11 @@ 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?
-      redirect_to auth_trainings_path
+      redirect_to auth_trainings_path(return_url: CGI.escape(request.path))
     end
   end