I'm using ServiceStack to build an API and at the same time, I'm using the plugin that allows Razor views to return html to browsers.
I have validation set up and configured correctly. I know this because I get the validation messages on the corresponding Razor view and the messages are accurate. However, if I modify the Razor view at all (and by "at all" I mean something as simple as adding a line break and then immediately deleting it), I get a 500 error accompanied by a blank page.
Other times, while in the process of simply refreshing the page to review styling of the Razor view, the validation simply returns a blank page with the same non-useful 500 error. And of course, if I remove the validation, the Razor view renders just fine 100% of the time.
What must I do to have validation working at all times? My code is straight forward and matches everything that I've been able to read in the Docs. Namely, both the response and the requests are in the same namespace and the validator is coded to the request.
Here is the request DTO
namespace MyServer.DTO
{
[Validator(typeof(SignUpValidator))]
[Route("SignUp")]
public class SignUp : IReturn<SignUpResponse>
{
public string UserName { get; set; }
public string Email { get; set; }
public string EmailConfirm { get; set; }
public string Password { get; set; }
public string PasswordConfirm { get; set; }
public int UserId { get; set; }
}
}
Here is the corresponding validator
namespace MyServer.DTO
{
public class SignUpValidator : AbstractValidator<SignUp>
{
public SignUpValidator()
{
RuleSet(ApplyTo.Post, () =>
{
RuleFor(e => e.UserName).NotEmpty();
RuleFor(e => e.Email).NotEmpty();
RuleFor(e => e.EmailConfirm).NotEmpty();
RuleFor(e => e.Password).NotEmpty();
RuleFor(e => e.PasswordConfirm).NotEmpty();
}
);
}
}
}
Here is the response
namespace MyServer.DTO
{
public class SignUpResponse
{
bool DidSucceed { get; set; }
int NewUserId { get; set; }
public ResponseStatus ResponseStatus { get; set; }
}
}
And lastly, here is the code that configures the validation plugin
Plugins.Add(new ValidationFeature());
Container.RegisterValidators(typeof(SignUpService).Assembly);
As you can see, everything is pretty vanilla and by the book, but this setup is very fragile for some reason. Any modification to the corresponding Razor view and I get the aforementioned errors. Then I have to recompile repeatedly until it works again.
I should also mention that, if I use the REST Console (google chrome extension thingy) to test this, I get the following results when posting to the exact same URI:
Content-Type set to : application/json - Everything works as intended. 400 Response with the errors listed in the response body.
Content-Type set to : application/html - Consistently breaks. 500 Response with no data in the response body.
There must be something that I'm missing.
Thanks so much for your time and I would appreciate any help.
Thanks again.
Related
I have an Azure Function 2.x that reside on a static class that looks like this
[FunctionName("Register")]
public static async Task<IActionResult> Run([HttpTrigger(AuthorizationLevel.Anonymous, "post")]HttpRequest req, ILogger log)
{
MyTypeClass defReturn = new MyTypeClass();
HttpStatusCode defCode = HttpStatusCode.BadRequest;
/*
* Logics that might or might not changes
* defReturn and defCode value
*/
return StatusCode((int) defCode, JsonConvert.SerializeObject(defReturn))
}
How can i achieve the return StatusCode((int) defCode, JsonConvert.SerializeObject(defReturn)) part ? is there any such method or equivalent in Azure Functions 2.x ?
in Azure Functions 1.x i can do the equivalent with req.CreateResponse(defCode, defReturn) where req is HttpRequestMessage , but i'm trying to stick with 2.x template/standard
Additional explanation : The said Code should return HTTP 400 Bad Request with the defReturn as it's response body to the client. But when i change the defCode to HttpStatusCode.Accepted, it should return HTTP 202 Accepted with the same response body. How can i achieve this ?
Additional explanation#2 : (If i remember correctly) in ASP.NET Core 1.x i can exactly do like that, returning IActionResult by calling a static method StatusCode not StatusCodes (which is a static class that contains HTTP codes constants
Thank you
Quite late reply, but I was stumbling into the same problem today, so maybe this is helpful for other searchers
Option 1: Default Codes
This is stated in detail on the blog Here
Some codes like 200 and 400 are predefined and can be used by
return new OkObjectResult("Your message"); // 200
return new BadRequestObjectResult("Your error message"); // 400
These functions are not available for every known Status Codes but some of the most frequent.
Option 2: Manual setting Code
If you need specific codes, that are not provided by default, you can use the base classes and create them yourself.
To achieve the Teapot Response for example, you can just use
using Microsoft.AspNetCore.Http;
var result = new ObjectResult("Your message");
result.StatusCode = StatusCodes.Status418ImATeapot;
return result;
In this example, the Statuscode is used from the StatusCodes class, but you can use enter other codes as well (usually, just stick to these codes)
Also, the ObjectResult class offers additional formatting options, if needed.
You can create a model class in which you can define two properties, i.e. one form your status code and one for you Json object and later on you can return the complete model. Code sample would be like below:
public static class QueueTriggerTableOutput
{
[FunctionName("QueueTriggerTableOutput")]
[return: Table("outTable", Connection = "MY_TABLE_STORAGE_ACCT_APP_SETTING")]
public static Person Run(
[QueueTrigger("myqueue-items", Connection = "MY_STORAGE_ACCT_APP_SETTING")]JObject order,
ILogger log)
{
return new Person() {
PartitionKey = "Orders",
RowKey = Guid.NewGuid().ToString(),
Name = order["Name"].ToString(),
MobileNumber = order["MobileNumber"].ToString() };
}
}
public class Person
{
public string PartitionKey { get; set; }
public string RowKey { get; set; }
public string Name { get; set; }
public string MobileNumber { get; set; }
}
on the receiving front, you can catch both the property.
P.S.- you have to change the return type of your function.
Hope it helps.
I am writing my first Azure Function and Azure table code. I am getting issue when I write Get query function. I have the following code that would try to get all the jobs from the table.
public static class GetJobStatus
{
[FunctionName("GetJobStatus")]
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = null)] HttpRequest req,
[Table("JobTable")] CloudTable jobTable,
ILogger log)
{
log.LogInformation("Get job status.");
string jobId = req.Query["jobid"];
TableQuery<JobTable> query = new TableQuery<JobTable>();
var segment = await jobTable.ExecuteQuerySegmentedAsync(query, null);
var data = segment.Select(JobExtension.ToJob);
return new OkObjectResult("");
}
}
But, I get compile time errors on these statements:
TableQuery<JobTable> query = new TableQuery<JobTable>();
var segment = await jobTable.ExecuteQuerySegmentedAsync(query, null);
I am trying to paste the actual error messages that appear on hover:
and, get the following on the ExecuteQuerySegmentedAsync method
My JobTable inherits from ITableEntity (Azure.Data.Tables):
public class JobTable : ITableEntity
{
public string Id { get; set; }
public DateTime CreatedTime { get; set; }
public JobRequest Request { get; set; }
//ITableEntity Members
public virtual string PartitionKey { get; set; } = "Job";
public virtual string RowKey { get => Id; set => Id = value; }
public DateTimeOffset? Timestamp { get; set; }
public ETag ETag { get; set; }
}
I have the following nuget packages installed:
I was trying to implement from this article, but it uses older nuget packages, and I was getting trouble.
Update #1:
As per the suggestions from Gaurav Mantri, to be consistent, I have removed Azure.Data.Tables and started using Microsoft.WindowsAzure.Storage.Table. That fixed the compile time errors. But now I get the following runtime error:
Microsoft.Azure.WebJobs.Host: Error indexing method 'GetJobStatus'. Microsoft.Azure.WebJobs.Extensions.Tables: Can't bind Table to type 'Microsoft.WindowsAzure.Storage.Table.CloudTable'.
Update #2:
I couldn't make it work, so I reverted all my code and references to use Microsoft.Azure.Cosmos.Table as described in the article I was referncing. Everything works as expected now. But, I still would like to see how I can use the newer libraries. For the original issue that was receiving, it was solved by Gaurav's suggestion so I will accept the answer for now.
I believe you are running into this issue is because you are using two different SDKs - Azure.Data.Tables and Microsoft.WindowsAzure.Storage.Table.
Your JobTable entity implements ITableEntity from Azure.Data.Tables and you are using that with your CloudTable from Microsoft.WindowsAzure.Storage.Table.
Can you try by removing Azure.Data.Tables package and just use Microsoft.WindowsAzure.Storage.Table?
Using ServiceStack 4.0.33 and given the following simplified DTOs...
[Route("/products")]
[Route("/products/{Id}")]
public class Product : IReturn<ProductResponse>
{
[PrimaryKey]
public string Id { get; set; }
public string Description { get; set; }
}
public class ProductResponse
{
public Product Product { get; set; }
}
with the following simplified service...
public class ProductService : Service
{
public object Post(Product product)
{
Db.Insert<Product>(product);
return new ProductResponse() { Product = product };
}
}
and calling it via this in my ProductsController
using (var productService = ResolveService<ProductService>())
{
var result = productService.Post(product);
if (result.IsErrorResponse())
return View(product);
else
return RedirectToAction("Index");
}
If I try to post a new Product with an intentional duplicate primary key, I get a 500 error HTML-style page instead of the ResponseStatus getting populated and returned...
I've seen lots of different StackOverflow posts about different reasons that ResponseStatus won't get populated, but I've tried several things to no avail. Am I missing something (hopefully simple)?
Where do you define the behavior that a duplicate key would be handled differently than HTTP 500. What other response would you expect? ResponseStatus can contain HTTP 500 which merely indicates a server-side error.
You have to specifically define that you want to handle the error differently and if so what type of error you want (which error code, which message) as explained here.
For instance:
public object Get(User request)
{
throw HttpError.NotFound("User {0} does not exist".Fmt(request.Name));
}
Check out the ServiceStack tutorial for more.
The error page you're getting is a custom ASP.NET Error page which hijacks any custom 500 HTTP error responses returned by your ASP.NET web application.
It can be disabled with:
<system.web>
...
<customErrors mode="Off" />
</system.web>
<system.webServer>
<httpErrors errorMode="Detailed" />
</system.webServer>
Here's another alternative of disabling IIS errors by setting TrySkipIisCustomErrors = true which in ServiceStack can be set with:
GlobalRequestFilters.Add((req, res, dto) =>
{
((HttpResponse)res.OriginalResponse).TrySkipIisCustomErrors = true;
});
So I am trying to grasp EF6 and it's use of Identity 2.0 for making a many to many relationship. It is Visual Studio 2013 and the MVC 5 template.
I have a fresh MVC app with the following models:
public class Meeting
{
public Guid MeetingID { get; set; }
public string Title { get; set; }
public virtual ICollection<ApplicationUser> Attendees { get; set; }
}
public class ApplicationUser : IdentityUser
{
public ICollection<Meeting> Meetings { get; set; }
}
Then I scaffold a controller and views for Meetings. Now, for instance, if I just wanted to add every user as an attendee to my meeting, I would imagine that I could modify the Create action to look like the following:
public ActionResult Create(Meeting meeting)
{
if (ModelState.IsValid)
{
meeting.MeetingID = Guid.NewGuid();
db.Users.ForEachAsync(u => meeting.Attendees.Add(u));
db.Meetings.Add(meeting);
db.SaveChanges();
return RedirectToAction("Index");
}
else...
}
However I don't think it's working because I don't see it in my LocalDB and if I add this to the detail view for a meeting I get no results:
#{foreach (var item in Model.Attendees)
{
<li>#item.UserName</li>
}}
As a final note, I have two users in the LocalDB, test and test2.
What tutorial or documentation will allow me to make this work?
* Edit *
So I have tried your suggestion (I'll admit, I am unfamiliar with async and await and how to implement it), and I had to modify the controller to allow me to use await so I'm not sure if I'm doing this correctly now, but I got the following to compile and I get run time error of 'object reference not set to an instance of an object' :
public async Task<ActionResult> Create(Meeting meeting)
{
if (ModelState.IsValid)
{
meeting.MeetingID = Guid.NewGuid();
await db.Users.ForEachAsync(u => meeting.Attendees.Add(u));
db.Meetings.Add(meeting);
db.SaveChanges();
(is it possible I'm missing some setup of my model on Entity Framework? The project is exactly the code shown above plus defaults.)
You're going to kick yourself :)
(Drumroll)
You forgot to add await before your ForEachAsync line:
await db.Users.ForEachAsync(u => meeting.Attendees.Add(u));
Without await the application happily continues on and saves the record, all before that async process has completed.
UPDATE
Most likely you haven't initialized the Attendees collection. Just set it to a new List<ApplicationUser> in your constructor.
I am using MVC, Entity Framework, Durandal and Breeze JS. I've got a user which looks like such (simplified):
public class User : EntityBase<Guid>, IAggregateRoot
{
public Guid Id { get; set; }
public string UserName { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
[ForeignKey("UserImage")]
public virtual Guid? ImageId { get; set; }
public virtual UserImage UserImage { get; set; }
}
The UserImage class looks like such. I know I should limit the size of the Image. (Maybe this is the issue?):
public class UserImage
{
public Guid Id { get; set; }
[MaxLength]
public byte[] Image { get; set; }
}
I've got an api function on the server to get the current user:
public IQueryable<User> GetCurrentUser()
{
IPrincipal principal = HttpContext.Current.User;
var users = _uow.Users.FindBy(u => u.UserName.Equals(principal.Identity.Name));
if (!users.Any())
{
throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.Unauthorized));
}
return users;
}
And two calls on the client which get the current user. The first is in the shell:
function loadCurrentUser() {
return uow.CurrentUser.all().then(function (newUser) {
log('Welcome to the Site ' + newUser[0].FullName() + '!', newUser[0], true);
config.CurrentUser(newUser[0]);
return true;
});
}
The second is in a ManageUser viewmodel:
function activate() {
return uow.CurrentUser.all(['UserImage']).then(function (user) {
self.CurrentUser(user[0]);
return $.when(init()).then(boot());
}).fail(function() {
return router.activate('accounts/login');
});
}
Now I can load an Image into the ManageUser page and save and in fiddler it shows that the ImageId and Image are being sent across to the server. Then I checked the BeforeSaveEntity intercept and shows two entities being saved.
Updated User with ImageId set
New UserImage
The data is also visible in the database. Now when I refresh the Manage User page I can see the two GetCurrentUser calls in fiddler.
From the shell call I can see that the User is being returned and an ImageId is set but no UserImage was sent over because didn't expand the query.
From the Manage User call I see the User is returned but only the ImageId is sent over and the Image object was OMITTED from the JSON.
Has anyone come across this issue with images? All my other expands appear to be working correctly. Does anyone have any examples on using breeze to save just the filepath to the image and possibly using windows azure for media storage?
I know this probably won't answer your question but I would propose not sending the byte array to the client and rather have an Image Handler on the server side that takes an ImageId as a parameter and then return the image with the relevant Content Type set. An example of this can be found here.
By using this approach you could reference your image from HTML using an img tag with the source set to the Image Hander with the relevant ImageId.
An example using knockout for data binding would be:
<a data-bind="attr: {href: '/Image/' + User.ImageId()}"></a>
This approach enables you to easily add caching on both the server and client which will improve performance. It also removed the need to convert the byte array to an image on the client side, which may or may not be a pain.
Edit:
When saving the managed user, post the Image to an Upload action on the ImageHandler (have a look at this article). This action must return the new Id of the image. After you've received the new Id, update the User.ImageId on client side and call SaveChanges on breeze.