教练端，显示学员名字

application/api/controller/coach/Lesson.php

@@ -177,12 +177,15 @@ class Lesson extends Apic
 
         //已报名数量，（包含已支付，已点名，没有冲突）
         $pay_number = Db::name('lesson_order')->alias('order')
-            ->field('order.id,user.avatar,order.usernumber,order.usernumber_sign')
+            ->field('order.id,user.firstname,user.lastname,user.nickname,user.avatar,order.usernumber,order.usernumber_sign')
             ->join('user','order.user_id = user.id','LEFT')
             ->where('order.slot_id',$info['id'])
             ->where('order.order_status','IN',[10,20])
             ->select();
         $pay_number = list_domain_image($pay_number,['avatar']);
+        foreach($pay_number as $key => $val){
+            $pay_number[$key]['showname'] = $val['firstname'].$val['lastname'];
+        }
 
         $info['usernumber'] = array_sum(array_column($pay_number,'usernumber'));