init project

app/controllers/weapps/code_sessions_controller.rb

@@ -0,0 +1,45 @@
+class Weapps::CodeSessionsController < Weapps::BaseController
+  def create
+    return render_error('code不能为空') if params[:code].blank?
+
+    reset_session
+    logged = false
+
+    result = Wechat::Weapp.jscode2session(params[:code])
+    Rails.logger.info("###########result: #{result}")
+    Rails.logger.info("###########result: #{result['session_key']}")
+    Rails.logger.info("###########result: #{result['unionid']}")
+    # 能根据 code 拿到 unionid
+    open_user = OpenUsers::Wechat.find_by(uid: result['unionid'])
+    if open_user.present? && open_user.user
+      successful_authentication(open_user.user)
+      set_session_unionid(result['unionid'])
+      logged = true
+    else
+      # 根据 code没拿到 unionid
+      Rails.logger.info("[Weapp] session_key: #{result['session_key']}")
+      Rails.logger.info("[Weapp] code: #{params[:code]}")
+      user_info = Wechat::Weapp.decrypt(result['session_key'], params[:encrypted_data], params[:iv])
+
+      # user_info.delete(:nickName)
+
+      # 老用户，已绑定
+      open_user = OpenUsers::Wechat.find_by(uid: user_info['unionId'])
+      if open_user.present? && open_user.user
+        successful_authentication(open_user.user)
+        logged = true
+      end
+
+      set_session_unionid(user_info['unionId'])
+      # user_info['nickname'] = user_info['nickName']
+      session[:wechat_user_extra] = user_info
+    end
+
+    set_session_openid(result['openid'])
+    set_weapp_session_key(result['session_key']) # weapp session_key写入缓存 后续解密需要
+
+    render_ok(openid: result['openid'], logged: logged) unless logged
+  rescue Wechat::Error => ex
+    render_error(ex.message)
+  end
+end