Dynamically changing schema in Entity Framework Core

Question

UPD here is the way I solved the problem. Although it\'s likely to be not the best one, it worked for me.

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I have an issue with working with EF

Answer 1

I actually found it to be a simpler solution with an EF interceptor.

I actually keep the onModeling method:

  protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.HasDefaultSchema("dbo"); // this is important to always be dbo

        // ... model definition ...
    }

And this code will be in Startup:

    public void ConfigureServices(IServiceCollection services)
    {
        // if I add a service I can have the lambda (factory method) to read from request the schema (I put it in a cookie)
        services.AddScoped(provider =>
        {
            var context = provider.GetService().HttpContext;

            var scheme = "dbo";
            if (context.Request.Cookies["schema"] != null)
            {
                scheme = context.Request.Cookies["schema"];
            }

            return new SchemeInterceptor(scheme);
        });

        services.AddDbContext(options =>
        {
            var sp = services.BuildServiceProvider();
            var interceptor = sp.GetService();
            options.UseSqlServer(Configuration.GetConnectionString("Default"))
                .AddInterceptors(interceptor);
        });

And the interceptor code looks something like this (but basically we use ReplaceSchema):

public interface ISchemeInterceptor : IDbCommandInterceptor
{

}

public class SchemeInterceptor : DbCommandInterceptor, ISchemeInterceptor
{
    private readonly string _schema;

    public SchemeInterceptor(string schema)
    {
        _schema = schema;
    }

    public override Task> ScalarExecutingAsync(DbCommand command, CommandEventData eventData, InterceptionResult