对于身份2种子数据库 [英] Seed database for Identity 2

问题描述

我碰到一个问题就来了与身份V2播种数据库。我从MVC5项目分离出来的IdentityModel到我的数据访问层，我安装EF迁移为好。所以我注释掉code这里面使用IdentityConfig.cs创建初始用户，并把code，看起来像这样我的种子数据库中

I came across a problem for seeding the database with Identity v2. I separated out the IdentityModel from the MVC5 project to my Data Access Layer where I setup EF Migrations as well. So I commented out the code which use inside "IdentityConfig.cs" to create initial user and put the code inside my seed database that looks like this

  protected override void Seed(Repository.DataContext.IdentityDb context)
        {

            //    var userManager = HttpContext.Current.GetOwinContext().GetUserManager<ApplicationUserManager>();
            //    var roleManager = HttpContext.Current.GetOwinContext().Get<ApplicationRoleManager>();
            var owinContext = new OwinContext();
            var userManager = owinContext.GetUserManager<ApplicationUserManager>();
            var roleManager = owinContext.Get<ApplicationRoleManager>();
            const string name = "[e-mail]";
            const string password = "Admin@123456";
            const string roleName = "Admin";

            //    //Create Role Admin if it does not exist
            var role = roleManager.FindByName(roleName);
            if (role == null)
            {
                role = new IdentityRole(roleName);
                var roleresult = roleManager.Create(role);
            }

            var user = userManager.FindByName(name);
            if (user == null)
            {
                user = new ApplicationUser { UserName = name, Email = name };
                var result = userManager.Create(user, password);
                result = userManager.SetLockoutEnabled(user.Id, false);
            }

            //    // Add user admin to Role Admin if not already added
            var rolesForUser = userManager.GetRoles(user.Id);
            if (!rolesForUser.Contains(role.Name))
            {
                var result = userManager.AddToRole(user.Id, role.Name);
            }
        }  

现在，当我运行命令更新的数据库，我得到了一个错误

Now when I am running command update-database, I got an error

Value cannot be null.
Parameter name: manager

它看起来像，我在code

It looks like, I am getting null in these two lines of code

var userManager = owinContext.GetUserManager<ApplicationUserManager>();
var roleManager = owinContext.Get<ApplicationRoleManager>();

任何建议吗？

推荐答案

这是为了避免使用OWIN上下文的方式：

This is the way to avoid using an OWIN context:

protected override void Seed(Repository.DataContext.IdentityDb context)
    var roleStore = new RoleStore<IdentityRole>(context);
    var roleManager = new RoleManager<IdentityRole>(roleStore);
    var userStore = new UserStore<ApplicationUser>(context);
    var userManager = new UserManager<ApplicationUser>(userStore);               
    var user = new ApplicationUser { UserName = "sallen" };

    userManager.Create(user, "password");                    
    roleManager.Create(new IdentityRole { Name = "admin" });
    userManager.AddToRole(user.Id, "admin");
}

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