新增已发布的课程的课件不允许删除

Tiobon.Core.Services/Ghre/Ghre_CourseWareServices.cs

@@ -237,4 +237,37 @@ public class Ghre_CourseWareServices : BaseServices<Ghre_CourseWare, Ghre_Course
             }
         }
     }
+
+    #region 删除
+    // <summary>
+    /// 删除指定ID的数据
+    /// </summary>
+    /// <param name="id">主键ID</param>
+    /// <returns></returns>
+    public override async Task<bool> DeleteById1(object id)
+    {
+
+        if (await Db.Queryable<Ghre_Course>().AnyAsync(x => x.CourseWareId == (long)id))
+            throw new Exception($"该课件已与课程关联,暂不可删除！");
+
+        return await base.DeleteById1(id);
+    }
+
+    /// <summary>
+    /// 删除指定ID集合的数据(批量删除)
+    /// </summary>
+    /// <param name="ids">主键ID集合</param>
+    /// <returns></returns>
+    public override async Task<bool> DeleteByIds1(long[] ids)
+    {
+
+        foreach (var id in ids)
+        {
+            if (await Db.Queryable<Ghre_Course>().AnyAsync(x => x.CourseWareId == (long)id))
+                throw new Exception($"课件已与课程关联,暂不可删除！");
+        }
+
+        return await base.DeleteByIds1(ids);
+    }
+    #endregion
 }