添加 删除课程分类时，验证是否有关联的课程，有就不让删除

web/src/main/java/com/ibeetl/jlw/service/CourseLabelService.java

@@ -1,9 +1,14 @@
 package com.ibeetl.jlw.service;
 
 
+import cn.hutool.core.lang.Assert;
+import com.ibeetl.admin.core.entity.CoreUser;
 import com.ibeetl.admin.core.service.CoreBaseService;
 import com.ibeetl.admin.core.util.PlatformException;
+import com.ibeetl.admin.core.web.JsonResult;
+import com.ibeetl.jlw.dao.CourseInfoDao;
 import com.ibeetl.jlw.dao.CourseLabelDao;
+import com.ibeetl.jlw.entity.CourseInfo;
 import com.ibeetl.jlw.entity.CourseLabel;
 import com.ibeetl.jlw.web.query.CourseLabelQuery;
 import org.apache.commons.collections4.CollectionUtils;
@@ -13,8 +18,11 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Arrays;
 import java.util.List;
 
+import static com.ibeetl.jlw.enums.AddTypeEnum.ADMIN_ADD;
+
 
 /**
  * CourseLabel Service
@@ -27,6 +35,10 @@ public class CourseLabelService extends CoreBaseService<CourseLabel> {
     @Autowired
     private CourseLabelDao courseLabelDao;
 
+    @Autowired
+    private CourseInfoDao courseInfoDao;
+
+
     public PageQuery<CourseLabel> queryByCondition(PageQuery query) {
         PageQuery ret = courseLabelDao.queryByCondition(query);
         queryListAfter(ret.getList());
@@ -66,4 +78,32 @@ public class CourseLabelService extends CoreBaseService<CourseLabel> {
         List<CourseLabel> list = courseLabelDao.template(courseLabel);
         return CollectionUtils.isEmpty(list) ? null : list.get(0);
     }
+
+    public JsonResult<String> delCourseLabelHandler(CourseLabel courseLabel, CoreUser coreUser) {
+        Assert.isTrue(coreUser.isUniAdmin() || coreUser.isAdmin(), "只允许学校管理员和超管访问该接口！");
+        CourseLabel cl = queryById(courseLabel.getCourseLabelId());
+        // 只有超管才能修改系统分配的数据
+        Assert.isFalse(ADMIN_ADD.equals(cl.getAddType()) && coreUser.isUniAdmin(), "用户无法修改系统分配的数据！");
+
+        CourseInfo courseInfo = new CourseInfo();
+        courseInfo.setCourseLabelId(courseLabel.getCourseLabelId());
+        courseInfo.setCourseInfoType(1);
+
+        long count = courseInfoDao.createLambdaQuery()
+                .andEq(CourseInfo::getCourseLabelId, courseLabel.getCourseLabelId())
+                .andEq(CourseInfo::getCourseInfoType, 1)
+                .andIn(CourseInfo::getCourseInfoStatus, Arrays.asList(1, 2))
+                .count();
+
+        if (count>0){
+            return JsonResult.failMessage("该标签下有课程，无法删除！");
+        }
+
+        boolean success = updateTemplate(courseLabel);
+        if (success) {
+            return JsonResult.success();
+        } else {
+            return JsonResult.failMessage("更新失败");
+        }
+    }
 }

web/src/main/java/com/ibeetl/jlw/web/CourseLabelController.java

@@ -125,17 +125,7 @@ public class CourseLabelController{
         if(result.hasErrors()){
             return JsonResult.failMessage(result);
         }else {
-            Assert.isTrue(coreUser.isUniAdmin() || coreUser.isAdmin(), "只允许学校管理员和超管访问该接口！");
-            CourseLabel cl = courseLabelService.queryById(courseLabel.getCourseLabelId());
-            // 只有超管才能修改系统分配的数据
-            Assert.isFalse(ADMIN_ADD.equals(cl.getAddType()) && coreUser.isUniAdmin(), "用户无法修改系统分配的数据！");
-
-            boolean success = courseLabelService.updateTemplate(courseLabel);
-            if (success) {
-                return JsonResult.success();
-            } else {
-                return JsonResult.failMessage("更新失败");
-            }
+            return courseLabelService.delCourseLabelHandler(courseLabel,coreUser);
         }
     }