Asp.net OnModelCreating在实体框架7中未定义

我试图在EF7中设置模型的关系，但我遇到了问题：

OnModelCreating

方法和

DbModelBuilder

未定义

过去，我使用EF6，但现在我尝试迁移到EF7

这是我的密码

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
        //Section -> many Category
        modelBuilder.Entity<Section>()
            .HasMany<Category>(p => p.Categories)
            .WithRequired(p => p.Section);

        //Section -> many PriceCategory
        modelBuilder.Entity<Section>()
            .HasMany<PriceCategory>(p => p.PriceCategories)
            .WithRequired(p => p.Section);

        //Category - many Procedures
        modelBuilder.Entity<Category>()
            .HasMany<Procedure>(p => p.Procedures)
            .WithRequired(p => p.Category);

            //PriceCategory - many PriceProcedures
            modelBuilder.Entity<PriceCategory>()
            .HasMany<PriceProcedure>(p => p.PriceProcedures)
            .WithRequired(p => p.PriceCategory);
}

My project.json：

{
  "version": "1.0.0-*",
  "description": "Domain Class Library",
  "authors": [ "Garrus" ],
  "tags": [ "" ],
  "projectUrl": "",
  "licenseUrl": "",

    "dependencies": {
        "EntityFramework.Commands": "7.0.0-rc1-final",
        "EntityFramework.Core": "7.0.0-rc1-final",
        "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Linq": "4.0.1-beta-23516",
        "System.Runtime": "4.0.21-beta-23516",
        "System.Threading": "4.0.11-beta-23516"
    },

  "frameworks": {
    "net451": { },
    "dnxcore50": {}
  }
}

你能帮我吗？也许我忘记了一些NuGet包，或者有另一种方法可以在EF7中设置模型关系？

应该是这样的：

protected override void OnModelCreating(ModelBuilder modelBuilder)
 {
    ....
 }

---

我猜DbModelBuilder被重命名为ModelBuilder了。。。我有很多问题，所以我创建了一个新的ASP.NET 5 MVC项目，在那里复制我的旧模型、控制器、viewa等，一切都很好。（我认为，这是一种奇怪的魔法）

在这里，重写的方法，一切正常

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            base.OnConfiguring(optionsBuilder);
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
        }

我的用法和问题中的一样。 和域的project.json，也许它对面临相同错误的人有用

{
  "version": "1.0.0-*",
  "description": "Domain Class Library",
  "authors": [ "Garrus" ],
  "tags": [ "" ],
  "projectUrl": "",
    "licenseUrl": "",

    "dependencies": {
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Linq": "4.0.1-beta-23516",
        "System.Runtime": "4.0.21-beta-23516",
        "System.Threading": "4.0.11-beta-23516",
        "EntityFramework.Core": "7.0.0-rc1-final",
        "EntityFramework.Commands": "7.0.0-rc1-final",
        "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final"
    },

  "frameworks": {
    "net451": { },
    "dnxcore50": { }
  }
}

---

我刚刚知道，onconfigurang方法也是未定义的。保存了我的培根。

{
  "version": "1.0.0-*",
  "description": "Domain Class Library",
  "authors": [ "Garrus" ],
  "tags": [ "" ],
  "projectUrl": "",
    "licenseUrl": "",

    "dependencies": {
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Linq": "4.0.1-beta-23516",
        "System.Runtime": "4.0.21-beta-23516",
        "System.Threading": "4.0.11-beta-23516",
        "EntityFramework.Core": "7.0.0-rc1-final",
        "EntityFramework.Commands": "7.0.0-rc1-final",
        "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final"
    },

  "frameworks": {
    "net451": { },
    "dnxcore50": { }
  }
}