Question

VAE显示了下表示例：

public class Course
{
    public int CourseId { get; set; }
    public string CourseName { get; set; }
    public string Description { get; set; }

    [ForeignKey("OnlineTeacher")]
    public int? OnlineTeacherId { get; set; }
    public Teacher OnlineTeacher { get; set; }

    [ForeignKey("ClassRoomTeacher")]
    public int? ClassRoomTeacherId { get; set; }
    public Teacher ClassRoomTeacher { get; set; }
}

public class Teacher
{
    public int TeacherId { get; set; }
    public string Name { get; set; }

    [InverseProperty("OnlineTeacher")]
    public ICollection<Course> OnlineCourses { get; set; }
    [InverseProperty("ClassRoomTeacher")]
    public ICollection<Course> ClassRoomCourses { get; set; }
}

我发现我可以删除[ForeignKey(*)]属性，但仍然可以在Courses表中正确创建它们。但是，如果我删除BOTH [InverseProperty]属性，则在构建时EF会抛出错误。是否有This article的命名约定？我的目标是密切关注命名约定并减少基于属性/流畅的配置量。

Answer 1

如果我删除BOTH [InverseProperty]属性，EF会抛出错误当我建立。是否有这样的命名约定外键？

当两个相同类型的许多关联（例如1对多）在两个实体之间退出时，EF定义了无命名约定。

例如，当const path = require('path'); const HtmlWebpackPlugin = require('html-webpack-plugin'); const CleanWebpackPlugin = require('clean-webpack-plugin'); const webpack = require('webpack'); module.exports = { entry: { app: './src/index.js' }, devServer: { // contentBase: './dist', contentBase: __dirname + "/assets/", hot: true, }, plugins: [ new CleanWebpackPlugin(['dist']), new HtmlWebpackPlugin({ title: 'Output Management' }), new webpack.NamedModulesPlugin(), new webpack.HotModuleReplacementPlugin() ], output: { path: __dirname + "/assets/", filename: 'bundle.js', chunkFilename: '[name].js' }, };和EntityA之间存在一个关联时。假设它在EntityB和EntityA之间存在1对*的关系，当您尊重约定时，它会很有效。但是当你在EntityB和EntityA之间建立另一个1对*的关系时，EF需要你的帮助才能知道关联是如何相关的。因此，您必须使用EntityB数据注释属性或通过流畅配置定义完整关系。

EF Core中是否存在多个逆属性的命名约定或属性是否必要？

1 个答案: