fix bug

apps/exams/Lib/Model/ExamsPaperModel.class.php

@@ -45,10 +45,9 @@ class ExamsPaperModel extends Model
             $map['_string'] .= ' AND attachment > 0';
             $map['_string'] .= ' AND attachment > 0';
         }
         }
         if ((int)$isApi === 3) {
         if ((int)$isApi === 3) {
-            $this->field('*, ( SELECT count(el_exams_paper_options.exams_paper_id) from el_exams_paper_options WHERE el_exams_paper_options.exams_paper_id =  el_exams_paper.exams_paper_id) as abc');
+            $this->field('*, ( SELECT count(el_exams_paper_options.exams_paper_id) from el_exams_paper_options WHERE el_exams_paper_options.exams_paper_id =  el_exams_paper.exams_paper_id) as hasQuestion');
         }
         }
 
 
-
         $order         = isset($this->order_field[$order]) ? $this->order_field[$order] : $order;
         $order         = isset($this->order_field[$order]) ? $this->order_field[$order] : $order;
         $list          = $this->where($map)->order($order)->findPage($limit);
         $list          = $this->where($map)->order($order)->findPage($limit);
         if ($list['data']) {
         if ($list['data']) {