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Multiple connection string same dbcontext #4940


User avatar
0
manojreddy created

I need help to implement in the controller when user call an API like ChangeDatabase(string databaseConexionString), then all the request made for that user will use the new connection string instead.

[Produces("application/json")]
[Route("api/admin")]
public class AdminController : Controller
{
    private readonly DatabaseContext _context;
    private readonly IMapper _mapper;
    public AdminController(DatabaseContext context, IMapper mapper)
    {
        _context = context;
        _mapper = mapper;
    }
    [HttpGet("[action]")]
    public IActionResult ChangeDatabase(string databaseConexionString)
    {            
         //change conexion string...
         return Ok("changed!");
    }
}

My startup.cs file, the configure services is the default

public void ConfigureServices(IServiceCollection services)
{
    services.AddDbContext<DatabaseContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

I just want to change between databases and keep the same context class because the tables are the same, the only difference is the data.


1 Answer(s)
  • User Avatar
    0
    ismcagdas created
    Support Team

    Hi,

    You can implement a custom connection string resolver (<a class="postlink" href="https://github.com/aspnetboilerplate/aspnetboilerplate/blob/dev/src/Abp/Domain/Uow/IConnectionStringResolver.cs">https://github.com/aspnetboilerplate/as ... esolver.cs</a>) and return the correct connection string.

    If user changes connection string using the UI, you can store it in a setting and return the setting value in your custom connection string resolver. If there is no setting value for the user, you can return the default connection string.