I want to take a few post query parameters from an API i have and create a new entry. I wanted to do this with in the method with out needing to load context or something.
namespace fais.printing_services.Controllers
{
[Produces("application/json")]
[Route("api/[controller]/[action]")]
public class printController : Controller
{
private readonly IHostingEnvironment _appEnvironment;
public printController(IHostingEnvironment appEnvironment)
{
_appEnvironment = appEnvironment;
}
/**/
[HttpPost]
public IActionResult request(string id="test_default", string url = "", string html = "")
{
print_job _print_job = new print_job();
_print_job.html = html;
_print_job.options = options; //json object string
_print_job.url = url;
using (ApplicationDbContext db = new ApplicationDbContext())
{
db.print_job.Add(_print_job);
db.SaveChanges();
}
return Json(new
{
save = true
});
}
}
}
I just want to be able create a new print_job entry and save it when the API is called and return a json response.
Add ApplicationDbContext to controller constructor, it will be injected automatically (if your Startup.cs is like recommeneded):
private readonly IHostingEnvironment _appEnvironment;
private readonly ApplicationDbContext _db;
public printController(IHostingEnvironment appEnvironment, ApplicationDbContext db)
{
_appEnvironment = appEnvironment;
_db = db;
}
[HttpPost]
public IActionResult request(string id="test_default", string url = "", string html = "")
{
var _print_job = new print_job()
{
html = html,
options = options,
url = url,
}
_db.print_job.Add(_print_job);
_db.SaveChanges();
return Json(new { save = true });
}
Related
I'm seeding sql tables with the use of context factory, It shows up and there is an element in mssql, but when I write a controller, I get an empty list with no entries in the table. Could it perhaps be the inheritance that is causing an issue? Classical concert is inherited from Concert.
ConcertController:
public class ConcertController : Controller
{
private readonly AppDbContext _context;
public ConcertController(AppDbContext context)
{
_context = context;
}
public IActionResult Index()
{
var data = _context.Concerts.ToList(); //this variable is null
return View();
}
}
DbContext:
public class AppDbContext : DbContext
{
public virtual DbSet<Concert> Concerts { get; set; }
public virtual DbSet<Ticket> Tickets { get; set; }
public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
{
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<Party>().HasBaseType<Concert>();
modelBuilder.Entity<ClassicalConcert>().HasBaseType<Concert>();
base.OnModelCreating(modelBuilder);
}
}
Data seeding:
var factory = new AppContextFactory();
using var context = factory.CreateDbContext();
var builder = WebApplication.CreateBuilder(args);
await AddData();
async Task AddData()
{
ClassicalConcert mozart;
await context.AddRangeAsync(new[]
{
mozart = new ClassicalConcert()
{
PerformerName = "Some random dude",
TicketsCount= 1000,
PerformanceDate= DateTime.Now,
Location = "Rnd location",
Description = "some rnd desc",
ImageURL = "some https",
VoiceType = Centaurea.Data.Enums.VoiceTypes.Bass,
ConcertName = "Mozarts back",
ComposersName = "Mozart",
}
});
await context.SaveChangesAsync();
}
Context Factory:
public class AppContextFactory : IDesignTimeDbContextFactory<AppDbContext>
{
public AppDbContext CreateDbContext(string[] args = null)
{
var configuration = new ConfigurationBuilder().AddJsonFile("appsettings.json").Build();
var optionsBuilder = new DbContextOptionsBuilder<AppDbContext>();
optionsBuilder.UseSqlServer(configuration["ConnectionStrings:DefaultConnection"]);
return new AppDbContext(optionsBuilder.Options);
}
}
Picture of the Debuger:
I'm trying to use NavivgateTo in Blazor to pass a file id and name to download a file from my Download controller.
What is the proper setup? I've tried a number of possibilities and I keep seeing an error: Sorry, there is nothing at this address.
Razor Page
public async Task SelectedDisplayDbItemChanged(DisplayDbItemsComboBoxItemDTO item)
{
Data = null;
Data = GetDataTable();
var fileId = await utilities.ExportDataTableToFile((DataTable)Data).ConfigureAwait(false);
//navigationManager.NavigateTo($"api/download/fileId/" + fileId + "/fileName/" + "myfile", true);
//?data1=678&data2=c-sharpcorner
navigationManager.NavigateTo($"api/Download/{fileId}/{"myfile"}", true);
}
Controller:
[HttpPost("Download/{fileId}/{fileName}")]
public async Task<IActionResult> Download(string fileId, string fileName)
{
using (var ms = new MemoryStream())
{
var fullPath = Path.Combine(DownloadPath, fileId);
await using (var stream = new FileStream(fullPath, FileMode.Open))
{
await stream.CopyToAsync(ms);
}
ms.Position = 0;
return File(ms, "application/octet-stream", $"{fileName}.xlsx");
}
}
I've seen a lot of examples from the Razor page to the Razor page, but not from NavigateTo to a controller with passing multiple parameters.
I've tried these responses as well: https://stackoverflow.com/a/71130256/9594249
https://stackoverflow.com/a/71130256/9594249
Not like Asp.net MVC or razor page, in Blazor parameters are passed by [Parameter] tag
#page "/Download/{fileId}/{fileName}"
#code {
[Parameter]
public string? fileId { get; set; }
[Parameter]
public string? fileName { get; set; }
}
please refer : https://learn.microsoft.com/en-us/aspnet/core/blazor/fundamentals/routing?view=aspnetcore-6.0
(Updated)
add to Program.cs or Startup.cs:
builder.Services.AddRazorPages(options => {
options.Conventions.AddPageRoute("/DownloadPage", "Download/{fileId?}/{fileName?}");
}
});
Pages/DownloadPage.cshtml
#page "{fileId?}/{fileName?}"
#model BlazorApp.Pages.DownloadModel
Pages/DownloadPage.cshtml.cs
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
namespace BlazorApp.Pages;
public class DownloadModel : PageModel
{
private readonly IWebHostEnvironment _env;
public DownloadModel(IWebHostEnvironment env)
{
_env = env;
}
public IActionResult OnGet()
{
// work with RouteData.Values["fileId"] and RouteData.Values["fileName"]
}
}
please refer :
https://learn.microsoft.com/en-us/answers/questions/243420/blazor-server-app-downlaod-files-from-server.html
https://learn.microsoft.com/ko-kr/aspnet/core/razor-pages/razor-pages-conventions?view=aspnetcore-6.0
In my API I have a Create method in my controller that accepts all of the models fields, but in the method I'm excluding the ID field since on a create it's generated. But in Swagger it's showing the following.
Is there a way for it not to show the following part?
"id": 0
Is a viewmodel how I should go about this?
I tried the following, but can't get it to work.
public class PartVM
{
public string Name { get; set; }
}
public interface IPartService
{
Task<Part> CreatePart(PartVM part);
Task<IEnumerable<Part>> GetParts();
Task<Part> GetPart(int partId);
}
public class PartService : IPartService
{
private readonly AppDbContext _appDbContext;
public PartService(AppDbContext appDbContext)
{
_appDbContext = appDbContext;
}
public async Task<Part> CreatePart(PartVM part)
{
var _part = new Part()
{
Name = part.Name
};
var result = await _appDbContext.Parts.AddAsync(_part);
await _appDbContext.SaveChangesAsync();
return result.Entity;
}
}
Here's my controller.
[Route("api/[controller]")]
[ApiController]
public class PartsController : ControllerBase
{
private readonly IPartService _partService;
public PartsController(IPartService partService)
{
_partService = partService;
}
[HttpPost]
public async Task<ActionResult<Part>> CreatePart(PartVM part)
{
try
{
if (part == null)
return BadRequest();
var _part = new Part()
{
Name = part.Name
};
var createdPart = await _partService.CreatePart(_part);
return CreatedAtAction(nameof(GetPart),
new { id = createdPart.Id}, createdPart);
}
catch (Exception /*ex*/)
{
return StatusCode(StatusCodes.Status500InternalServerError, "Error creating new record in the database");
}
}
I'm getting a build error saying "CS1503 Argument 1: cannot convert from 'MusicManager.Shared.Part' to 'MusicManager.Server.Data.ViewModels.PartVM'".
It's refering to "_part" in this line "var createdPart = await _partService.CreatePart(_part);".
Any help is appreciated, thank you!
you have a CreatePart method which receives a PartVM model, but you are sending a Part Model to it
change your method to this :
public async Task<Part> CreatePart(Part part)
{
var result = await _appDbContext.Parts.AddAsync(_part);
await _appDbContext.SaveChangesAsync();
return result.Entity;
}
I need to return action and controller info with web api in asp core .
I have this controller :
[BreadCrumb(Order = 0)]
[DisplayName("سطح دسترسی پویا")]
[Route("api/[controller]")]
public class ValuesController : Controller
{
// GET api/values
[DisplayName("برگشت اطلاعات")]
[BreadCrumb(Order = 1)]
[HttpGet]
public IEnumerable<string> Get()
{
return new string[] { "value1", "value2" };
}
}
now i need to return DisplayName and all info . how can i do this ?
You could try:
[DisplayName("Controller Display Name")]
[Route("api/[controller]")]
public class ValuesController : Controller
{
// GET api/values
[HttpGet]
[DisplayName("Action Display Name")]
public IEnumerable<string> Get()
{
var ControllerDisplayName = string.Empty;
var ActionsDisplayName = string.Empty;
var ControllerAttributes = ControllerContext.ActionDescriptor.ControllerTypeInfo.GetCustomAttributes(typeof(DisplayNameAttribute), true);
if (ControllerAttributes.Length > 0)
{
ControllerDisplayName = ((DisplayNameAttribute)ControllerAttributes[0]).DisplayName;
}
var ActionAttributes = (ControllerContext.ActionDescriptor.MethodInfo.GetCustomAttributes(typeof(DisplayNameAttribute), false));
if (ActionAttributes.Length > 0)
{
ActionsDisplayName = ((DisplayNameAttribute)ActionAttributes[0]).DisplayName;
}
return new string[] { ControllerDisplayName, ActionsDisplayName };
}
}
You could use code below:
var controllerInfo = ControllerContext.ActionDescriptor.ControllerTypeInfo.CustomAttributes;
var methodInfo = ControllerContext.ActionDescriptor.MethodInfo.CustomAttributes;
I'm having hectic last couple of days due to this problem. I'm trying to pass route data to the view as a matter of navigation. However routeInfo contains no route information. i.e. routeInfo.RouteData.Values.Count = 0. I have another application with the same code which is working fine.
I'm not sure what i'm missing here.
Any help would be really appreciated!!
public ActionResult Index(int type)
{
UrlHelper u = new UrlHelper(this.ControllerContext.RequestContext);
string url = u.Action("Action", "Controller", new { type = type }, Request.Url.Scheme);
Uri uri = new Uri(url);
RouteInfo routeInfo = new RouteInfo(uri, HttpContext.Request.ApplicationPath);
Session["_ReturnURL"] = routeInfo.RouteData.Values;
ViewBag.ReturnURL = Helpers.GetSessionKey("_ReturnURL");
return View();
}
public static void RegisterRoutes(RouteCollection routes)
{
routes.RouteExistingFiles = true;
routes.IgnoreRoute("elmah.axd");
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapRoute(
name: "Controller",
url: "Controller/{type}/{action}/{id}",
defaults: new { controller = "Controller", action = "Action", id = UrlParameter.Optional }
);
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "CBlah", action = "ABlah", id = UrlParameter.Optional, returnUrl = "~/Blah2/Blah2" }
);
}
public class RouteInfo
{
public RouteData RouteData { get; private set; }
public RouteInfo(RouteData data)
{
RouteData = data;
}
public RouteInfo(Uri uri, string applicationPath)
{
RouteData = RouteTable.Routes.GetRouteData(new InternalHttpContext(uri, applicationPath));
}
private class InternalHttpContext : HttpContextBase
{
private readonly HttpRequestBase _request;
public InternalHttpContext(Uri uri, string applicationPath)
{
_request = new InternalRequestContext(uri, applicationPath);
}
public override HttpRequestBase Request { get { return _request; } }
}
private class InternalRequestContext : HttpRequestBase
{
private readonly string _appRelativePath;
private readonly string _pathInfo;
public InternalRequestContext(Uri uri, string applicationPath)
{
_pathInfo = uri.Query;
if (String.IsNullOrEmpty(applicationPath) || !uri.AbsolutePath.StartsWith(applicationPath, StringComparison.OrdinalIgnoreCase))
_appRelativePath = uri.AbsolutePath.Substring(applicationPath.Length);
else
_appRelativePath = uri.AbsolutePath;
}
public override string AppRelativeCurrentExecutionFilePath { get { return String.Concat("~", _appRelativePath); } }
public override string PathInfo { get { return _pathInfo; } }
}
}
Route.GetRouteData Definition
public override RouteData GetRouteData(HttpContextBase httpContext)
{
string virtualPath = httpContext.Request.AppRelativeCurrentExecutionFilePath.Substring(2) + httpContext.Request.PathInfo;
RouteValueDictionary values = this._parsedRoute.Match(virtualPath, this.Defaults);
if (values == null)
{
return null;
}
RouteData data = new RouteData(this, this.RouteHandler);
if (!this.ProcessConstraints(httpContext, values, RouteDirection.IncomingRequest))
{
return null;
}
foreach (KeyValuePair<string, object> pair in values)
{
data.Values.Add(pair.Key, pair.Value);
}
if (this.DataTokens != null)
{
foreach (KeyValuePair<string, object> pair2 in this.DataTokens)
{
data.DataTokens[pair2.Key] = pair2.Value;
}
}
return data;
}
The problem lies in this line:
string virtualPath = httpContext.Request.AppRelativeCurrentExecutionFilePath.Substring(2) + httpContext.Request.PathInfo;
You are appending a query string as the httpContext.Request.PathInfo via:
_pathInfo = uri.Query;
I know for a fact that the Route class does not consider the query string, so appending it to the path is a mistake. There is also some information here that backs up the fact that PathInfo always should return an empty string.
Per MSDN:
For the URL http://www.contoso.com/virdir/page.html/tail, the PathInfo value is /tail.
So, adding a query string is making this line fail (when there is a query string) because _parsedRoute.Match isn't expecting one.
RouteValueDictionary values = this._parsedRoute.Match(virtualPath, this.Defaults);
My guess is that one of your applications "works" because it is not being passed a URL with a query string, and therefore matches correctly. But whatever the case, you should return an empty string from PathInfo in your InternalRequestContext class to make it work 100% of the time (unless you have crazy URLs with dots in them, then you may need to do some extra work).