抄表单详情添加电表倍率，以及计算用电量

application/em/controller/Useage.php

@@ -222,7 +222,7 @@ class Useage extends Base
 
         $useage = (new \app\em\model\Useage)->alias('u')
                                         ->field('u.*')
-                                        ->field('emr.pricing_type')
+                                        ->field('emr.pricing_type,em.rate')
                                         ->leftJoin(['em'],'em.id=u.em_id')
                                         ->leftJoin(['em_rule'=>'emr'],'emr.em_id=em.id')
                                         ->where('u.useage_id','=',$uid)