.Net Core, Angular 5.0.2 I am trying to return UserFriendlyException errors to app written using Ionic 3. I can sign up and find a tenant using a (unique) voucher code, return the tenantId to the app and add this to the sign in process which gives me the correct tenantId as a claim in the JWT. To return data to the app I have implemented the [DontWrapResult] attribute which works well. However, I can not find a way to return well formatted errors to the app using the UserFriendlyException constructor. For example, I am trying to implement UserFriendlyException to indicate that a username is already taken (as per the standard system). The error received at the app has a status of 0 and a statusText of "Unknown error". I have tried implementing [DontWrapResult(WrapOnError = false)] but I am still getting the same results. The question is: How to return UserFriendlyException to the app in a manner which can be read in the app?
7 Answer(s)
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Why not wrap on error?
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It does not matter whether I use the WrapOnError qualifier or not, I am still getting the same result.
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You set it to false though. Did you try true?
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Yes, exactly the same result.
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What happens when you completely remove DontWrapResult attribute ?
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Hi Aaron, This was a bit sticky but I found the answer. First i will show you code when everything goes well. To register with the system an Ionic app sends a username, password and voucher code. The call from Ionic uses httpClient:
public onSignUp(AppRegisterModel): Observable<AppRegisterResultModel> { return this.httpClient.post("http://...//api/services/app/Account/RegisterFromApp", AppRegisterModel) .map(registerResultModel => registerResultModel) .catch(this.handleError); }AppRegisterModel contains a voucher code unique to each tenant. On the server I find the tenant from the voucher code:
var tenantId = await GetTenantIdFromVoucherCodeAsync(model.VoucherCode);and then I add the user in a unit of work using the SetTenantId filter and ensure AbpSession uses the same value:
using (_unitOfWorkManager.Current.SetTenantId(tenantId)) { AbpSession.Use(tenantId, null);Successful registration returns a tenantId which is saved locally and added to the sign in process.
AppTokenAuthController is a direct copy of TokenAuthController with changes only to the input model and the first method:[HttpPost] public async Task<AuthenticateResultModel> AppAuthenticate([FromBody] AppAuthenticateModel model) { var loginResult = await GetLoginResultAsync( model.UserNameOrEmailAddress, model.Password, await GetTenancyNameFromTenantId(model.TenantId) );AppAuthenticateModel includes TenantId which is added to the JWT token and can now be used securely between an Ionic app and a Zero server. So far so good but if anything goes wrong it's not nice. At the moment my error message returned by a _UserFriendlyException_can be found here:
error.error.error.message;Despite the fact it's not nice it works perfectly and we get a nice user friendly error message displayed on the Ionic app. I messed with the
[DontWrapResult(WrapOnError = true)]with different values but the above configuration proved stable.
This also closes [https://forum.aspnetboilerplate.com/viewtopic.php?f=5&t=10636&p=26158#p26158]).
Thanks for your help.
Bob
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Thanks for letting us know!
