如何将 coreIdentity 添加到现有数据库

Question

我在将 Microsoft.AspNetCore.Identity.EntityFrameworkCore 添加到我的项目时遇到问题。我已经创建了数据库（代码优先），现在我需要添加一些表，这是创建登录和注册系统所必需的。

我已经尝试过一些教程如何做到这一点，但我总是遇到同样的错误。可能我忘记了。

我有 2 个控制器，Home 和 Account。 Home是对产品和产品列表进行操作。帐户必须让我注册用户并让他们登录。

 public class AccountController : Controller
    {
        private readonly UserManager<IdentityUser> userManager;
        private readonly SignInManager<IdentityUser> signInManager;

        public AccountController(UserManager<IdentityUser> userManager,
                                  SignInManager<IdentityUser> signInManager)
        {
            this.userManager = userManager;
            this.signInManager = signInManager;
        }
        [HttpGet]
        public IActionResult Register()
        {


            return View();

        }
        [HttpPost]
        public async Task<IActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new IdentityUser { UserName = model.Email, Email = model.Email };
                var result = await userManager.CreateAsync(user, model.Password);

                if (result.Succeeded)
                {
                    await signInManager.SignInAsync(user, isPersistent: false);
                    return RedirectToAction("Main_menu", "Home");
                }

                foreach (var error in result.Errors)
                {
                    ModelState.AddModelError("", error.Description);
                }

            }

            return View();
        }
    }

还有我的 Context（我正在创建 3 个表，但由于 IdentityDbContext，db 有更多）

 public class ProductContext : IdentityDbContext
    {

        public Microsoft.EntityFrameworkCore.DbSet<Product> Products { get; set; }
        public Microsoft.EntityFrameworkCore.DbSet<List> Lists { get; set; }

        public Microsoft.EntityFrameworkCore.DbSet<ProductList> ProductLists { get; set; }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            base.OnConfiguring(optionsBuilder);

                optionsBuilder.UseSqlite("Data Source=database.db");
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {

            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<ProductList>()
                .HasKey(pl => new { pl.ProductId, pl.ListId });

            modelBuilder.Entity<ProductList>()
                .HasOne(pl => pl.Product)
                .WithMany(p => p.ProductList)
                .HasForeignKey(pl => pl.ProductId)
                .OnDelete(DeleteBehavior.Cascade);

            modelBuilder.Entity<ProductList>()
                .HasOne(pl => pl.List)
                .WithMany(l => l.ProductList)
                .HasForeignKey(pl => pl.ListId)
                .OnDelete(DeleteBehavior.Cascade);
        }
    }

和我的观点：

@model RegisterViewModel
@{
    ViewData["Title"] = "Register";
}

<h1>Rejestracja</h1>

<div class="row">
    <div class="col-sm-12">
        <form method="post">
            <div asp-validation-summary="All" class="text-danger"></div>
            <div class="form-group">
                <label asp-for="Email"></label>
                <input asp-for="Email" class="form-control" />
                <span asp-validation-for="Email" class="text-danger"></span>
            </div>

            <div class="form-group">
                Haslo:
                <input asp-for="Password" class="form-control" />
                <span asp-validation-for="Password" class="text-danger"></span>
            </div>
            <div class="form-group">
                Powtorz Haslo:
                <input asp-for="ConfirmPassword" class="form-control" />
                <span asp-validation-for="ConfirmPassword" class="text-danger"></span>
            </div>
            <button type="submit" class="btn btn-primary">Zarejestruj</button>

        </form>
    </div>
</div>

和启动：

    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
            var contentRoot = configuration.GetValue<string>(WebHostDefaults.ContentRootKey);
        }

        public IConfiguration Configuration { get; }


        public void ConfigureServices(IServiceCollection services)
        {


            services.AddIdentity<IdentityUser, IdentityRole>()
                    .AddEntityFrameworkStores<ProductContext>();
            services.Configure<CookiePolicyOptions>(options =>
            {

                options.CheckConsentNeeded = context => true;
                options.MinimumSameSitePolicy = SameSiteMode.None;
            });


            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseCookiePolicy();
            app.UseAuthentication();
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
        }

当我想移动到这个视图时，我有：

InvalidOperationException：尝试激活“Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore9[Microsoft.AspNetCore.Identity.IdentityUser,Microsoft.AspNetCore.Identity.IdentityRole,PracaInz.Models.ProductContext,System.String,Microsoft.AspNetCore.Identity.IdentityUserClaim1[System.String],Microsoft.AspNetCore.Identity.IdentityUserRole@ 时无法解析类型“PrcaInz.Models.ProductContext”的服务987654326@1[System.String],Microsoft.AspNetCore.Identity.IdentityUserToken1[System.String],Microsoft.AspNetCore.Identity.IdentityRoleClaim1[System.String]]'。

是否可以将 Microsoft.AspNetCore.Identity.EntityFrameworkCore 添加到代码优先数据库？

在整个项目中，我有更多视图，我可以在它们之间移动。该错误仅在我尝试使用 Microsoft.AspNetCore.Identity.EntityFrameworkCore 时出现。 该错误涉及 Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore。 表格是空的。

当我没有 HttpPost 注册方法时，我可以移动到视图。问题是当我添加 HttpPost 方法时。

Answer 1

需要补充

services.AddEntityFrameworkSqlite().AddDbContext<ApplicationDbContext>();

然后删除

services.AddIdentity<IdentityUser, IdentityRole>()
                    .AddEntityFrameworkStores<ProductContext>();

在启动中。 错误是关于错误的启动配置。 发送的东西太多了。

ApplicationDbContext：

 public class ApplicationDbContext : IdentityDbContext
    {
        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
            : base(options)
        {
        }
        public Microsoft.EntityFrameworkCore.DbSet<Product> Products { get; set; }
        public Microsoft.EntityFrameworkCore.DbSet<List> Lists { get; set; }

        public Microsoft.EntityFrameworkCore.DbSet<ProductList> ProductLists { get; set; }


        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            base.OnConfiguring(optionsBuilder);

             optionsBuilder.UseSqlite("Data Source=assistant.db");

        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {

            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<ProductList>()
                .HasKey(pl => new { pl.ProductId, pl.ListId });

            modelBuilder.Entity<ProductList>()
                .HasOne(pl => pl.Product)
                .WithMany(p => p.ProductList)
                .HasForeignKey(pl => pl.ProductId)
                .OnDelete(DeleteBehavior.Cascade);

            modelBuilder.Entity<ProductList>()
                .HasOne(pl => pl.List)
                .WithMany(l => l.ProductList)
                .HasForeignKey(pl => pl.ListId)
                .OnDelete(DeleteBehavior.Cascade);
        }
    }