update

app/service/apply/tryLessonApply.js

@@ -11,6 +11,31 @@ class TryLessonApplyService extends CrudService {
     this.model = this.ctx.model.Apply.TryLessonApply;
     this.lessonStudentService = this.ctx.service.business.lessonStudent;
   }
+  async beforeCreate(body) {
+    const { school_id, lesson_id, student_id } = body;
+    // 该学校,该节课,这名学员. 申请试听的申请状态为 未审核或审核通过时
+    let num = await this.model.count({ school_id, lesson_id, student_id, result: '0' });
+    if (num > 0) throw new BusinessError(ErrorCode.DATA_EXISTED, '本节课的试听申请在审核中,无法重复申请');
+    num = await this.model.count({ school_id, lesson_id, student_id, result: '1' });
+    if (num > 0) throw new BusinessError(ErrorCode.DATA_EXISTED, '本节课的试听申请已通过,无法重复申请');
+    // 查询这个学员在该学校是否使用过试听
+    num = await this.model.count({ school_id, student_id, result: '1' });
+    if (num > 0) throw new BusinessError(ErrorCode.DATA_EXISTED, '该学员已经在本校试听过课程,无法重复申请');
+    return body;
+  }
+
+  async beforeUpdate(filter, update) {
+    // 不是 审核通过的情况就不需要继续检查是否使用过试听名额了
+    if (update.result !== '1') return { filter, update };
+    const data = await this.model.findById(filter.id);
+    if (!data) throw new BusinessError(ErrorCode.DATA_NOT_EXIST, '未找到数据');
+    const { school_id, student_id } = data;
+    const num = await this.model.count({ school_id, student_id, result: '1' });
+    if (num > 0) throw new BusinessError(ErrorCode.DATA_EXISTED, '该学员已经在本校试听过课程,无法重复申请');
+    return { filter, update };
+  }
+
+
   // 处理审核成功的情况
   async afterUpdate(filter, body, data) {
     const { result } = data;