EF7 RC1：禁用级联删除 [英] EF7 RC1 : Disable Cascade Delete

问题描述

在昨天发布的EntityFramework 7的RC1中，添加了Cascade Delete。

In the RC1 of EntityFramework 7, released yesterday, Cascade Delete was added.

要针对每个关系禁用它，我可以使用：

To disable it per relationship, I can use :

      builder.Entity<Site>().HasOne(e => e.Person)
      .WithMany(x => x.Sites).Metadata.DeleteBehavior = DeleteBehavior.Restrict;

我想为DbContext全局禁用它，但没有找到方法。我该怎么办？

I want to disable it globally for a DbContext, but I didn't find a way. How can I do ?

推荐答案

有人在github项目论坛上说，目前唯一的方法就是迭代方法 OnModelCreating（ModelBuilder builder）中的所有关系，并将 DeleteBehavior 属性设置为 DeleteBehavior .Restrict ：

Someone stated on the github project forum that the only way to do it right now is to iterate through all relationships in the method OnModelCreating(ModelBuilder builder), and set the DeleteBehavior property to DeleteBehavior.Restrict :

        foreach (var relationship in builder.Model.GetEntityTypes().SelectMany(e => e.GetForeignKeys()))
        {
            relationship.DeleteBehavior = DeleteBehavior.Restrict;
        }

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