ABP Framework version: v4.3.3
UI type: Blazor Server
DB provider: EF Core and Dapper
Tiered : yes
Exception message and stack trace:
*Steps to reproduce the issue:"
I need your help or a guide to make this: We know that the current user has a list of claims. We need to add particular parameters or settings and new values to that claim's list. When the app needs to read a value, it could query it from the current user, i need to apply this both in blazor server(UI) and in the API (backend).
I test this code:
`public class SessionValueService : ApplicationService, ISessionValue, ITransientDependency {
private readonly ICurrentPrincipalAccessor _currentPrincipalAccessor;
public SessionValueService(ICurrentPrincipalAccessor currentPrincipalAccessor) {
_currentPrincipalAccessor = currentPrincipalAccessor;
}
public async Task<string> GetSessionValueAsync(string key) {
var ClaimObligatorio = TicketsSettings.CompaniaActualId;
var x = _currentPrincipalAccessor.Principal.Claims.FirstOrDefault(p => p.Type.Equals(ClaimObligatorio));
if (x != null) {
x = _currentPrincipalAccessor.Principal.Claims.FirstOrDefault(p => p.Type.Equals(key));
if (x != null) {
return x.Value;
}
} else {
var claimsPrincipal = await CargarValoresGlobales();
_currentPrincipalAccessor.Change(claimsPrincipal);
return await GetSessionValueAsync(key);
}
return null;
}`
But when the app uses this method, there is not any claim (charged or load) in the main current user thread.
Anybody could help me to do this?
4 Answer(s)
-
1
Hi,
JWT token is designed to be immutable, but you can create a
middlewareto change the ICurrentPrincipalAccessor to add the claims. It should work on the current HTTP request.But for Blazor server UI. It uses SignalR to synchronize operations, you can create a hub filter.
-
0
Hi, @iangshiwei thanks for your answer. Do you know where i can find an example? Or Something similar?
-
0
I will make an example for you.
-
1
Hi,
Backend:
..... app.UseAuthorization(); app.Use(async (httpContext, next) => { var currentUser = httpContext.RequestServices.GetRequiredService<ICurrentUser>(); var currentPrincipal = httpContext.RequestServices.GetRequiredService<ICurrentPrincipalAccessor>(); var claimsIdentity = currentPrincipal.Principal.Identities.FirstOrDefault(); if (currentUser.IsAuthenticated) { claimsIdentity?.AddClaim(new Claim("test","test")); } using (currentPrincipal.Change(claimsIdentity)) { await next.Invoke(); } });Blazor:
public class MyHubFilter : IHubFilter { public virtual async ValueTask<object> InvokeMethodAsync(HubInvocationContext invocationContext, Func<HubInvocationContext, ValueTask<object>> next) { var currentUser = invocationContext.ServiceProvider.GetRequiredService<ICurrentUser>(); if (!currentUser.IsAuthenticated) { return await next(invocationContext); } var currentPrincipalAccessor = invocationContext.ServiceProvider.GetRequiredService<ICurrentPrincipalAccessor>(); var claimsIdentity = currentPrincipalAccessor.Principal.Identities.First(); claimsIdentity.AddClaim(new Claim("test","test")); using (currentPrincipalAccessor.Change(claimsIdentity)) { return await next(invocationContext); } } } Configure<HubOptions>(options => { options.AddFilter<MyHubFilter >(); });
