获取ERROR更新具有多个关系的实体（JOIN TABLE）

Question

我有2个实体与连接表绑定在一起。创建文章工作正常。更新文章实体会引发此异常：

SqlException：DELETE语句与REFERENCE约束“FK_ArticleGroups_Articles_ArticleID”冲突。冲突发生在数据库“myDB”，表“dbo.ArticleGroups”，列“ArticleID”中。该语句已终止。

以下是我的课程和设置

Article.cs

public class Article
{
    public int ArticleId { get; set; }
    public string Title { get; set; }
    public virtual ICollection<ArticleGroup> ArticleGroups { get; set; } = new List<ArticleGroup>();
}

Group.cs

public class Group
{
   public int GroupId { get; set; }
   public string GroupName { get; set; }
   public virtual ICollection<ArticleGroup> ArticleGroups { get; set; } = new List<ArticleGroup>();
public virtual ICollection<GroupUser> GroupUsers { get; set; } = new List<GroupUser>();
}

ArticleGroup.cs

public class ArticleGroup
{
   public int ArticleId { get; set; }
   public Article Article { get; set; }
   public int GroupId { get; set; }
   public Group Group { get; set; }
}

AppDbContext.cs

protected override void OnModelCreating(ModelBuilder modelBuilder)
{ 
    .....
    modelBuilder.Entity<ArticleGroup>()
            .HasKey(e => new { e.ArticleID, e.GroupId });

        modelBuilder.Entity<ArticleGroup>()
            .HasOne(e => e.Article)
            .WithMany(e => e.ArticleKbGroups)
            .HasForeignKey(e => e.ArticleID)
            .OnDelete(DeleteBehavior.Restrict);

        modelBuilder.Entity<ArticleGroup>()
            .HasOne(e => e.Group)
            .WithMany(e => e.ArticleGroups)
            .HasForeignKey(e => e.GroupId)
            .OnDelete(DeleteBehavior.Restrict);
}

public DbSet<Article> Articles { get; set; }
public DbSet<Group> Groups { get; set; }
public DbSet<ArticleGroup> ArticleGroups { get; set; }

ArticleRepository.cs

public bool UpdateArticle(Article article)
    {
        var articleGroups = _appDbContext.ArticleGroups.Where(a => a.ArticleID == article.ArticleID);
        _appDbContext.ArticleGroups.RemoveRange(articleGroups);
        _appDbContext.Articles.Update(article);
        return (_appDbContext.SaveChanges() >= 0);
    }

我已经看到类似的问题与这样复杂的解决方案相比，这些解决方案并不像这样微不足道。 EF中我在哪里设置不正确？我在想它的sql语句没有以正确的顺序执行？

我认为游戏计划将从连接表中删除所有相同的articleID并插入新值。

编辑

添加了关系

User.cs

public int UserId { get; set; }
    public string FullName { get; set; }
    public virtual ICollection<GroupUser> GroupUsers { get; set; } = new List<GroupUser>();

GroupUser.cs

public class GroupUser
{
    public int UserId { get; set; }
    public User User { get; set; }
    public int GroupId { get; set; }
    public Group Group { get; set; }
}

这也是其中的另一种关系。这会导致错误吗？

我需要不删除这些组，以及它们可能属于另一篇文章。

编辑2

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<GroupUser>()
            .HasKey(e => new { e.UserId, e.GroupId }); 

        modelBuilder.Entity<GroupUser>()
            .HasOne(e => e.User)
            .WithMany(e => e.GroupUsers)
            .HasForeignKey(e => e.UserId)
            .OnDelete(DeleteBehavior.Restrict);

        modelBuilder.Entity<GroupUser>()
            .HasOne(e => e.Group)
            .WithMany(e => e.GroupUsers)
            .HasForeignKey(e => e.GroupId)
            .OnDelete(DeleteBehavior.Restrict);

        modelBuilder.Entity<ArticleGroup>()
            .HasKey(e => new { e.ArticleId, e.GroupId });

        modelBuilder.Entity<ArticleGroup>()
            .HasOne(e => e.Article)
            .WithMany(e => e.ArticleGroups)
            .HasForeignKey(e => e.ArticleId)
            .OnDelete(DeleteBehavior.Restrict);

        modelBuilder.Entity<ArticleGroup>()
            .HasOne(e => e.Group)
            .WithMany(e => e.ArticleGroups)
            .HasForeignKey(e => e.GroupId)
            .OnDelete(DeleteBehavior.Restrict);
}