修改—删除展板时提示哪些学习内容在使用展板，修改内容时不显示已下架展板

src/main/java/cn/chnmuseum/party/web/controller/ExhibitionBoardController.java

@@ -256,6 +256,7 @@ public class ExhibitionBoardController extends BaseController {
 
         // 查询在指定展板分类下的展板信息
         LambdaQueryWrapper<ExhibitionBoard> lambdaQuery = Wrappers.<ExhibitionBoard>lambdaQuery();
+        lambdaQuery.eq(ExhibitionBoard::getPublished, true);
         lambdaQuery.in(ExhibitionBoard::getExhibitionBoardCatId, boardCatIds);
         lambdaQuery.in(ExhibitionBoard::getId, boardId);
         List<ExhibitionBoard> exhibitionBoardList = exhibitionBoardService.list(lambdaQuery);
@@ -615,9 +616,11 @@ public class ExhibitionBoardController extends BaseController {
         // 查询展板对应的学习内容id
         queryWrapper.eq(LearningContentBoard::getExhibitionBoardId, id);
         queryWrapper.select(LearningContentBoard::getLearningContentId);
-        List<String> list = this.learningContentBoardService.listObjs(queryWrapper,Object::toString);
+        List<String> list = this.learningContentBoardService.listObjs(queryWrapper, Object::toString);
+        List<LearningContent> learningContents = this.learningContentService.listByIds(list);
+        String collect = learningContents.stream().map(LearningContent::getName).collect(Collectors.joining(","));
         if (CollectionUtil.isNotEmpty(list)) {
-            return getFailResult("该展板被学习内容使用，不能被删除！");
+            return getFailResult("该展板被学习内容:" + collect + "使用，不能被删除！");
         }
 
         TUser user = getcurUser();