修改学生查询接口

app/service/student.js

@@ -16,9 +16,8 @@ class StudentService extends CrudService {
 
   // 查询
   async seek({ termid, skip, limit }) {
-    const students = await this.model.find({ termid, classid: null });
-    const data = await this.model.find({ termid, classid: null }).skip(Number(skip)).limit(Number(limit));
-    const total = await students.length;
+    const total = await this.model.count({ termid, classid: '' });
+    const data = await this.model.find({ termid, classid: '' }).skip(Number(skip)).limit(Number(limit));
     const result = { total, data };
     return result;
   }