如何在ef core 2.1.0中为管理员用户设置种子?

因为用户不能像使用 .HasData() .NET核心2.1。

种子角色 在.NET Core 2.1中,使用下面给出的代码 ApplicationDbContext 班级:

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);

        modelBuilder.Entity<IdentityRole>().HasData(new IdentityRole { Name = "Admin", NormalizedName = "Admin".ToUpper() });
    }

为用户添加角色 按照下面给出的步骤。

步骤1: 新建类

public static class ApplicationDbInitializer
{
    public static void SeedUsers(UserManager<IdentityUser> userManager)
    {
        if (userManager.FindByEmailAsync("abc@xyz.com").Result==null)
        {
            IdentityUser user = new IdentityUser
            {
                UserName = "abc@xyz.com",
                Email = "abc@xyz.com"
            };

            IdentityResult result = userManager.CreateAsync(user, "PasswordHere").Result;

            if (result.Succeeded)
            {
                userManager.AddToRoleAsync(user, "Admin").Wait();
            }
        }       
    }   
}

步骤2: 现在修改 ConfigureServices 方法在 Startup.cs 班级。

修改前:

services.AddDefaultIdentity<IdentityUser>()
            .AddEntityFrameworkStores<ApplicationDbContext>();

修改后:

services.AddDefaultIdentity<IdentityUser>().AddRoles<IdentityRole>()
            .AddEntityFrameworkStores<ApplicationDbContext>();

步骤3: 修改的参数 Configure 方法在 创业公司 班级。

修改前:

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        //..........
    }

修改后:

public void Configure(IApplicationBuilder app, IHostingEnvironment env, UserManager<IdentityUser> userManager)
    {
        //..........
    }

步骤4 :调用种子的方法( ApplicationDbInitializer 班:

ApplicationDbInitializer.SeedUsers(userManager);

实际上是 User 实体可以被播种 OnModelCreating ,需要考虑的一件事是: ID s应该是预定义的。如果类型 string 用于 TKey 身份实体,那么根本就没有问题。

protected override void OnModelCreating(ModelBuilder builder)
{
    base.OnModelCreating(builder);
    // any guid
    const string ADMIN_ID = "a18be9c0-aa65-4af8-bd17-00bd9344e575";
    // any guid, but nothing is against to use the same one
    const string ROLE_ID = ADMIN_ID;
    builder.Entity<IdentityRole>().HasData(new IdentityRole
    {
        Id = ROLE_ID,
        Name = "admin",
        NormalizedName = "admin"
    });

    var hasher = new PasswordHasher<UserEntity>();
    builder.Entity<UserEntity>().HasData(new UserEntity
    {
        Id = ADMIN_ID,
        UserName = "admin",
        NormalizedUserName = "admin",
        Email = "some-admin-email@nonce.fake",
        NormalizedEmail = "some-admin-email@nonce.fake",
        EmailConfirmed = true,
        PasswordHash = hasher.HashPassword(null, "SOME_ADMIN_PLAIN_PASSWORD"),
        SecurityStamp = string.Empty
    });

    builder.Entity<IdentityUserRole<string>>().HasData(new IdentityUserRole<string>
    {
        RoleId = ROLE_ID,
        UserId = ADMIN_ID
    });
}

这就是我最后是怎么做到的。我创造了一个 DbInitializer.cs 类来对我的所有数据(包括管理员用户)进行种子设定。

以下是与用户帐户种子设定相关的方法的代码:

private static async Task CreateRole(RoleManager<IdentityRole> roleManager, 
ILogger<DbInitializer> logger, string role)
{
  logger.LogInformation($"Create the role `{role}` for application");
  IdentityResult result = await roleManager.CreateAsync(new IdentityRole(role));
  if (result.Succeeded)
  {
    logger.LogDebug($"Created the role `{role}` successfully");
  }
  else
  {
    ApplicationException exception = new ApplicationException($"Default role `{role}` cannot be created");
    logger.LogError(exception, GetIdentiryErrorsInCommaSeperatedList(result));
    throw exception;
  }
}

private static async Task<ApplicationUser> CreateDefaultUser(UserManager<ApplicationUser> userManager, ILogger<DbInitializer> logger, string displayName, string email)
{
  logger.LogInformation($"Create default user with email `{email}` for application");

  ApplicationUser user = new ApplicationUser
  {
    DisplayUsername = displayName,
    Email = email,
    UserName = email
  };

  IdentityResult identityResult = await userManager.CreateAsync(user);

  if (identityResult.Succeeded)
  {
    logger.LogDebug($"Created default user `{email}` successfully");
  }
  else
  {
    ApplicationException exception = new ApplicationException($"Default user `{email}` cannot be created");
    logger.LogError(exception, GetIdentiryErrorsInCommaSeperatedList(identityResult));
    throw exception;
  }

  ApplicationUser createdUser = await userManager.FindByEmailAsync(email);
  return createdUser;
}

private static async Task SetPasswordForUser(UserManager<ApplicationUser> userManager, ILogger<DbInitializer> logger, string email, ApplicationUser user, string password)
{
  logger.LogInformation($"Set password for default user `{email}`");
  IdentityResult identityResult = await userManager.AddPasswordAsync(user, password);
  if (identityResult.Succeeded)
  {
    logger.LogTrace($"Set password `{password}` for default user `{email}` successfully");
  }
  else
  {
    ApplicationException exception = new ApplicationException($"Password for the user `{email}` cannot be set");
    logger.LogError(exception, GetIdentiryErrorsInCommaSeperatedList(identityResult));
    throw exception;
  }
}

我的 Program.cs 看起来像这样:

public class Program
{
  public static async Task Main(string[] args)
  {
    var host = BuildWebHost(args);

    using (var scope = host.Services.CreateScope())
    {
      var services = scope.ServiceProvider;
      Console.WriteLine(services.GetService<IConfiguration>().GetConnectionString("DefaultConnection"));
      try
      {
        var context = services.GetRequiredService<PdContext>();
        var userManager = services.GetRequiredService<UserManager<ApplicationUser>>();
        var roleManager = services.GetRequiredService<RoleManager<IdentityRole>>();

        var dbInitializerLogger = services.GetRequiredService<ILogger<DbInitializer>>();
        await DbInitializer.Initialize(context, userManager, roleManager, dbInitializerLogger);
      }
      catch (Exception ex)
      {
        var logger = services.GetRequiredService<ILogger<Program>>();
        logger.LogError(ex, "An error occurred while migrating the database.");
      }
    }

    host.Run();
  }

  public static IWebHost BuildWebHost(string[] args) =>
    WebHost.CreateDefaultBuilder(args)
    .UseStartup<Startup>()
    .Build();
}

如果您指的是身份用户,我们的做法是在DbContext.OnModelCreating中添加硬编码值:

builder.Entity<Role>().HasData(new Role { Id = 2147483645, Name = UserRole.Admin.ToString(), NormalizedName = UserRole.Admin.ToString().ToUpper(), ConcurrencyStamp = "123c90a4-dfcb-4e77-91e9-d390b5b6e21b" });

用户:

builder.Entity<User>().HasData(new User
        {
            Id = 2147483646,
            AccessFailedCount = 0,
            PasswordHash = "SomePasswordHashKnownToYou",
            LockoutEnabled = true,
            FirstName = "AdminFName",
            LastName = "AdminLName",
            UserName = "admin",
            Email = "admin@gmail.com",
            EmailConfirmed = true,
            InitialPaymentCompleted = true,
            MaxUnbalancedTech = 1,
            UniqueStamp = "2a1a39ef-ccc0-459d-aa9a-eec077bfdd22",
            NormalizedEmail = "ADMIN@GMAIL.COM",
            NormalizedUserName = "ADMIN",
            TermsOfServiceAccepted = true,
            TermsOfServiceAcceptedTimestamp = new DateTime(2018, 3, 24, 7, 42, 35, 10, DateTimeKind.Utc),
            SecurityStamp = "ce907fd5-ccb4-4e96-a7ea-45712a14f5ef",
            ConcurrencyStamp = "32fe9448-0c6c-43b2-b605-802c19c333a6",
            CreatedTime = new DateTime(2018, 3, 24, 7, 42, 35, 10, DateTimeKind.Utc),
            LastModified = new DateTime(2018, 3, 24, 7, 42, 35, 10, DateTimeKind.Utc)
        });

builder.Entity<UserRoles>().HasData(new UserRoles() { RoleId = 2147483645, UserId = 2147483646 });

我希望有更好的/更清洁的方法来做。