依赖注入授权选项 [英] Dependency Injection on AuthorizationOptions

问题描述

我正在为我的ASP.NET 5 MVC应用程序创建授权规则/策略。创建它是直截了当的，很容易做，它是工作（与我的基本测试）。但是，我现在需要将我的数据上下文放在需求中。

我在我的IAuthorizationRequirement实现中创建了一个构造函数，它实现了一个 MyContext 对象实现 DbContext 。

我在我的<$ c $中注册了IAuthorizationRequirement c> Startup.cs 文件。

  services.Configure< AuthorizationOptions>（options => 
 {
 options.AddPolicy（AllowProfileManagement，policy => policy.Requirements.Add（
 new AllowProfileManagementRequirement（new MyRepository（new MyContext（））））; 
} ）; 
  

不幸的是，当我的规则运行时， MyContext 不知道使用的连接字符串（在 Startup.cs 中更远）：

  services.AddEntityFramework（）
 .AddSqlServer（）
 .AddDbContext< MemorialContext>（options => 
 options.UseSqlServer（Configuration [Data：DefaultConnection：ConnectionString ]））; 
  

我正在使用DI这些类型，否则（它正在工作）。

  services.AddTransient< MyRepository>（
 provider => new MyRepository（provider.GetRequiredService< MyContext>（）））; 
  

我知道我在做什么是不对的，但我看不到如何使这个权利所以DI正在跨越一切。

解决方案

这是它的工作原理。发布问题，答复不久之后。以下是可能遇到我问题的人的方法。

  services.Configure< AuthorizationOptions>（options => 
 {
 options.AddPolicy（AllowProfileManagement，policy => policy.Requirements.Add（
 services.BuildServiceProvider（）。GetRequiredService& AllowProfileManagementRequirement>（）））; 
}）; 
  

I am creating an authorization rule/policy for my ASP.NET 5 MVC application. Creating it was straightforward and pretty easy to do, and it is working (with my basic tests). However, I now need to get my data context into the requirement.

I created a constructor in my IAuthorizationRequirement implementation which takes a MyContext object which implements DbContext.

I am registering the IAuthorizationRequirement like so in my Startup.cs file.

services.Configure<AuthorizationOptions>(options => 
    {
        options.AddPolicy("AllowProfileManagement", policy => policy.Requirements.Add(
            new AllowProfileManagementRequirement(new MyRepository(new MyContext()))));
    });

Unfortunately, when my rule runs, MyContext is unaware of the connection strings which are used like so (farther up in Startup.cs):

services.AddEntityFramework()
    .AddSqlServer()
    .AddDbContext<MemorialContext>(options =>
        options.UseSqlServer(Configuration["Data:DefaultConnection:ConnectionString"]));

I am using DI for these types otherwise (and it is working).

services.AddTransient<MyRepository>(
        provider => new MyRepository(provider.GetRequiredService<MyContext>()));

I know what I am doing is not right, but I don't see how to make this right so that DI is being leveraged across everything.

解决方案

It's how it always works. Post the question, and the answer comes shortly after. Here's how for those who may come across my question.

services.Configure<AuthorizationOptions>(options => 
    {
        options.AddPolicy("AllowProfileManagement", policy => policy.Requirements.Add(
            services.BuildServiceProvider().GetRequiredService< AllowProfileManagementRequirement>()));
    });

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