如何在 OnModelCreating 中调用非静态类来播种用户身份？

如何解决如何在 OnModelCreating 中调用非静态类来播种用户身份？

我正在尝试在 OnModelCreating 中进行用户身份播种。

首先：ApplicationDbInitializer 是专门用于使用 UserManager 为用户播种的类，如下所示：

public class ApplicationDbInitializer
{
    public UserManager<AppUser> userManager { get; set; }

    public ApplicationDbInitializer(UserManager<AppUser> _userManager)
    {
        userManager = _userManager;
    }

    public void SeedUsers()
    {
        string Email = Environment.GetEnvironmentvariable("Email");

        if (userManager.FindByEmailAsync(Email).Result == null)
        {
            AppUser user = new AppUser
            {
                Id = seedingIDs.ManagerID,Name = Environment.GetEnvironmentvariable("Name"),UserName = "test",normalizedUserName = "test".toupper(),PhoneNumber = Environment.GetEnvironmentvariable("Phone"),PhoneNumberConfirmed = true,Email = Email,normalizedEmail = Email.toupper(),EmailConfirmed = true,Bio = "...",Pic = "/assets/img/Me.jpg",Title = "Full-Stack Web Developer",IsManager = true,PasswordHash = "test@123",};

            IdentityResult result = userManager.CreateAsync(user,"adrg*&$IUHB475").Result;

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

OnModelCreating

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        builder.ApplyConfiguration(new seedingRoles());
            //builder.Entity<AppUser>().HasData(Initialize);

        ApplicationDbInitializer.SeedUsers();

        builder.Entity<IdentityUserRole<string>>().HasData(new IdentityUserRole<string>
        {
            RoleId = seedingIDs.RoleID,UserId = seedingIDs.ManagerID
        });

        builder.ApplyConfiguration(new seedingCategories())
            .ApplyConfiguration(new seedingBootstrapCategory())
            .ApplyConfiguration(new seedingTopics())
            .ApplyConfiguration(new seedingBootstrapTool())
            .ApplyConfiguration(new seedingPosts());

    }

问题：我收到此错误，如下所示

ApplicationDbInitializer 类是静态的还是非静态的都不是问题，但我需要将它包含到 OnModelCreating 中。

解决方法

谢谢你们 Progman 和 Ali。我找到了另一个解决方案。

我不确定，但似乎在 OnModelCreating 中使用 UserManager 不是首选。

无论如何，我改用 ModelBuilder 来启动用户身份数据。

首先：我创建了一个包含用户数据的静态类，如下所示。

public static class Initialize
{
    public static AppUser Manager(string UserName,string Password)
    {
        string Email = "your email here";
        string Name = "your name";
        string PhoneNumber = "your phone";

        AppUser AdminUser = new AppUser {

            Id = Guid.NewGuid(),Name = Name,UserName = UserName,NormalizedUserName = UserName.ToUpper(),PhoneNumber = PhoneNumber,PhoneNumberConfirmed = true,Email = Email,NormalizedEmail = Email.ToUpper(),EmailConfirmed = true,Bio = "...",Pic = "/assets/img/Me.jpg",Title = "...",IsManager = true,PasswordHash = Password
        };
        //PasswordHasher<AppUser> ph = new PasswordHasher<AppUser>();
        //AdminUser.PasswordHash = ph.HashPassword(AdminUser,Password);
        return AdminUser;
    }

}

注意：出于某种原因，我发现使用环境来获取变量，例如 以下，仅在运行时工作，但在运行时返回 null 执行添加迁移。

string Email = Environment.GetEnvironmentVariable("MyEmail");

下一步：我在 OnModelCreating 中使用 ModelBuilder 通过调用 Initialize 类为该用户提供种子

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        builder.Entity<AppUser>().HasData(Initialize.Manager("test","test@123"));

        builder.Entity<IdentityUserRole<string>>().HasData(new IdentityUserRole<string>
        {
            RoleId = SeedingIDs.RoleID,UserId = SeedingIDs.ManagerID
        });

    }