Question

我正在尝试设置我的模型＆＃39; EF7中的关系，但我遇到了问题：DbModelBuilder方法和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); }未定义。

过去，我使用的是EF6，但现在我尝试迁移到EF7。

这是我的代码

using Microsoft.Data.Entity;
using Domain.Models;

我的进口商品：

{
  "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": {}
  }
}

我的project.json：

<?xml version="1.0"?>
    <catalog>
       <book id="bk101" type="hardcover">
          <info author="Gambardella, Matthew" title="XML Developer's Guide" genre="Computer" price="44.95" publish_date="2000-10-01" description="An in-depth look at creating applications 
          with XML." />
       </book>
       <book id="bk102" type="softcover">
          <info author="Ralls, Kim" title="Midnight Rain" genre="Fantasy" price="5.95" publish_date="2000-10-01" description="A former architect battles corporate zombies, 
          an evil sorceress, and her own childhood to become queen 
          of the world." />
       </book>
       <book id="bk101" type="softcover">
          <info author="Corets, Eva" title="Maeve Ascendant" genre="Fantasy" price="5.95" publish_date="2000-11-17" description="After the collapse of a nanotechnology 
          society in England, the young survivors lay the 
          foundation for a new society." />
       </book>
    </catalog>

你能帮帮我吗？也许我忘记了一些NuGet包或者还有另一种在EF7中设置模型关系的方法吗？

Answer 1

应该是这样的：

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

我猜DbModelBuilder已重命名为ModelBuilder

Answer 2

嗯......我有很多问题，所以我创建了新的ASP.NET 5 MVC项目，复制我的旧模型，控制器，视图等，这一切都是好。（我认为，这是一个奇怪的魔法）

这里覆盖的方法，一切正常

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

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

我的用法与问题相同。和Domain的project.json一样，也许对于面临同样错误的人来说这很有用。

{
  "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": { }
  }
}

OnModelCreating在Entity Framework 7中未定义

2 个答案: