ASP.NET Core多个dbcontext无法添加迁移

Question

我有2个DbContexts：

services.AddDbContext<ConfigDbContext>(options => options.UseSqlServer(Configuration["Data:ConfigSQLServer:ConnectionString"].ToString(), t => t.MigrationsAssembly("App.Web")));

services.AddDbContext<AppDbContext>(options => options.UseSqlServer(Configuration["Data:AppSQLServer:ConnectionString"].ToString(), t => t.MigrationsAssembly("App.Web")));

当我尝试运行时

dotnet ef migrations add Initial -c AppDbContext

我明白了：

No DbContext named 'AppDbContext' was found

如果我跑：

dotnet ef dbcontext list

结果是：

FullNamespace.ConfigDbContext

找不到第二个DbContext AppDbContext

ConfigDbCOntext：

public class ConfigDbContext : DbContext
{
    public ConfigDbContext()
    {

    }

    public ConfigDbContext(DbContextOptions<ConfigDbContext> options) : base(options)
    {

    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }
}

AppDbContext：

public class AppDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, Guid>
{
    public AppDbContext()
    {

    }

    public ConfigDbContext(DbContextOptions<AppDbContext> options) : base(options)
    {

    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }
}

Answer 1

我有类似的设置，除了我的DbContext和我的IdentityDbCotenxt存在于除Web项目之外的不同程序集中。

ConfigDbContext

// Remove the parameter-less constructor

public class ConfigDbContext : DbContext
{
    public ConfigDbContext(DbContextOptions<ConfigDbContext> options) : base(options)
    { }

    rotected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }
}

AppDbContext

// Remove the parameter-less constructor
// Rename the constructor to AppDbContext, instead of ConfigDbContext

public class AppDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, Guid>
{
    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
    { }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }
}

同样在我的IdentityDbContext中，如果您将主键更改为Guid，我必须覆盖AppUserClaim，AppUserRole，AppUserLogin，AppRoleClaim和{ {1}}也是。

我的IdentityDbContext

示例

AppUserToken

我不认为这是问题，但如果我的建议从一开始就没有解决问题，可能会试一试。

Answer 2

AppDbContext应为：

public class AppDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, Guid>
{
    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
    {

    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
    }
}