I want to fake my complex object (an object with 5 objects properties) to test the post method in the controller.
When I use FakeItEasy, I get the object with nulls, and I can't insert the object to the DbContext.
So how can I fake this? Manually?
My Computer DTO:
public class Computer
{
public long Id { get; set; }
public Processor processor { get; set; }
public ICollection<Memory> memories { get; set; }
public ICollection<Disk> disks { get; set; }
public MotherBoard motherBoard { get; set; }
public ICollection<GPU> gpus { get; set; }
}
Related
I'm porting a web application to ASP.NET Core 3, and after a bit of a battle, I'm almost at the finish line. Everything seems to work, but all of a sudden my JSON data returned from the api is missing some levels.
It seems the options.JsonSerializerOptions.MaxDepth is default at 64 levels, so it can be that. Some other places where an option can be playing tricks on me?
This is the code (and a quickview of the value):
And this is the JSON I get in the browser:
So the ParticipantGroups property/collection is completely missing in the generated output.
Any ideas where this happens?
EDIT:
I've added a repo on Github that showcases the issue. Standard ASP.NET Core 3.0 solution, created from the template, with a change to the result returned from the Weatherforecast controller:
https://github.com/steentottrup/systemtextjsonissue
For now I've gone back to using Newtonsoft.Json, with the Microsoft.AspNetCore.Mvc.NewtonsoftJson package. Then when I have some time, I'll try finding out what the solution is, without Newtonsoft.Json.
The problem seems to be an error in the new version 3.0. At least it seems like an error to me.
It seems System.Text.Json will convert the class mentioned in the hierarchy, not the actual class. So if you are using an abstract class in the hierarchy, you're in trouble. The second I removed the base class, and used the actual class I'm returning, the problem goes away it seems.
So this doesn't work:
public class SurveyReportResult {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
public IEnumerable<OrganisationalUnit> OrganisationalUnits { get; set; }
}
public abstract class OrganisationalUnit {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
}
public class OrganisationalUnitWithParticipantGroups : OrganisationalUnit {
public IEnumerable<ParticipantGroup> ParticipantGroups { get; set; }
}
public class ParticipantGroup {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
}
This will only return the properties of the OrganisationalUnit class, not the additional property of the OrganisationalUnitWithParticipantGroups.
This works:
public class SurveyReportResult {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
public IEnumerable<OrganisationalUnitWithParticipantGroups> OrganisationalUnits { get; set; }
}
public class OrganisationalUnitWithParticipantGroups /*: OrganisationalUnit*/ {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
public IEnumerable<ParticipantGroup> ParticipantGroups { get; set; }
}
public class ParticipantGroup {
public Guid Id { get; set; }
public String Name { get; set; }
public Int32 MemberCount { get; set; }
}
With ASP.NET MVC Core and Entity Framework Core I'm trying to create a simple website.
I've defined my Model:
public class Club
{
[Key]
public int Id { get; set; }
public string Name { get; set; }
public virtual IEnumerable<Team> Teams { get; set; }
}
public class Team
{
[Key]
public int Id { get; set; }
public int ClubId { get; set; }
[MaxLength(32)]
public string Name { get; set; }
public virtual Club Club { get; set; }
}
As well as the corresponding View Models:
public class ClubViewModel
{
public int Id { get; set; }
public string Name { get; set; }
public virtual IEnumerable<TeamViewModel> Teams { get; set; }
}
public class TeamViewModel
{
public int Id { get; set; }
public int ClubId { get; set; }
public string Name { get; set; }
public virtual ClubViewModel Club { get; set; }
}
I've defined an Automapper Profile with the corresponding mappers:
CreateMap<Club, ClubViewModel>();
CreateMap<ClubViewModel, Club>();
CreateMap<Team, TeamViewModel>();
CreateMap<TeamViewModel, Team>();
I try to load a Club entity, with the navigation property Teams included (_context.Club.Include(c => c.Teams).ToList()). This works as expected, it returns a Club with a list of Teams. But when I try to map this instance to a ClubViewModel, I get an 502.3 error and my debug session is ended immediately.
It seems like I am missing something trivial, but I simply do not see it. There's no information in the Windows Event Log and I can't find any usefull information in the IIS Express logging (%userprofile%\documents\IISExpress)
What is causing the crash?
You can't perform this mapping because it is circular. You'll have to remove this line
public virtual ClubViewModel Club { get; set; }
from your TeamViewModel and the mapping should work as expected.
I'm trying to create a controller in MVC4 and I'm getting an error I don't understand (I'm new to MVC). It says "Unable to retrieve metadata for 'CIT.ViewModels.DashboardViewModel'..." and then gives 2 possible problems. One is that the DashboardViewModel has no key defined. The other is that EntitySet 'DashboardViewModels' has no key defined.
I defined a key for DashboardViewModel, but that didn't solve the problem. Here is my DashboardViewModel;
public class DashboardViewModel
{
public DashboardViewModel() { }
[Key]
public int Id { get; set; }
public Hardware Hardware { get; set; }
public Software Software { get; set; }
public HardwareType HardwareType { get; set; }
public Manufacturer Manufacturer { get; set; }
public SoftwarePublisher SoftwarePublisher { get; set; }
}
As you can see it is composed of classes. I did this so I could have multiple classes accessible from the same view. I didn't think it needed a key, but I added one and that didn't fix the problem. The other error sounded like it was looking for a DbSet for DashboardViewModels. As I understand it, your DbSets are your tables. I don't want or need a DashboardViewModels table. I'm only doing that so I can have multiple tables/classes accessible in my view. That's working fine up to this point.
When I am trying to create the controller, I am using the DashboardViewModel as as my model and Context as my context. Here is my context:
public class Context : DbContext
{
public DbSet<Software> Softwares { get; set; }
public DbSet<Location> Locations { get; set; }
public DbSet<SoftwarePublisher> SoftwarePublishers { get; set; }
public DbSet<SoftwareType> SoftwareTypes { get; set; }
public DbSet<Hardware> Hardwares { get; set; }
public DbSet<Manufacturer> Manufacturers { get; set; }
public DbSet<HardwareType> HardwareTypes { get; set; }
}
How do I address these errors?
I have created a ViewModel called DashboardViewModel:
public class DashboardViewModel
{
public Hardware Hardware { get; set; }
public Software Software { get; set; }
}
I am passing the ViewModel to the view in my ActionResult. But I need to pass other things too. Here is my ActionResult:
public ActionResult Index()
{
HardwareType hwt = new HardwareType { HType = "PC" };
IEnumerable<Hardware> Pcs = db.Hardware.Where(h => h.HardwareType.Contains(hwt));
DashboardViewModel dvm = new DashboardViewModel();
return View(dvm);
}
How do I pass Pcs to the view if I am already passing dvm? I don't even know if this is the right approach. What I am trying to accomplish is to create navigation on the page. So not only will I have PCs, but I'll have monitors and printers to pass to the view, as well as software. Here is my hardware class:
public class Hardware
{
public int Id { get; set; }
public virtual ICollection<DeviceType> Type { get; set; }
public string AssetTagId { get; set; }
public virtual ICollection<Manufacturer> Manufacturer { get; set; }
[Required]
[StringLength(50)]
public string ServiceTagId { get; set; }
[Required]
[StringLength(50)]
public string SerialNumber { get; set; }
[Required]
[StringLength(75)]
public string ProductNumber { get; set; }
// [Required]
[StringLength(20)]
public string PurchaseDate { get; set; }
[StringLength(20)]
public string WarrantyExpiration { get; set; }
[Required]
[StringLength(20)]
public string WarrantyType { get; set; }
public virtual ICollection<Location> Location { get; set; }
public virtual ICollection<HardwareType> HardwareType { get; set; }
[Required]
[StringLength(2000)]
public string Notes { get; set; }
public string POATag { get; set; }
}
What is the best approach for what I want to do (creating the navigation with various categories of hardware and software)? I'm new to MVC and am trying to follow suggestions on what to do, but I could use a higher level approach as maybe I'm going about this all wrong. Thanks.
You can put your Pcs in ViewBag or ViewData as below:
public ActionResult Index()
{
HardwareType hwt = new HardwareType { HType = "PC" };
IEnumerable<Hardware> Pcs = db.Hardware.Where(h => h.HardwareType.Contains(hwt));
ViewBag.Pcs=Pcs;//or ViewData["Pcs"]=Pcs;
DashboardViewModel dvm = new DashboardViewModel();
return View(dvm);
}
ViewBag is the dynamic object. You can add anything to it. With any name e.g. yous Pcs can also be stored in ViewBag as ViewBag.AnyNameYouLike=Pcs;
**RAZOR SYNTAX:**
Just apply loop and you are done.
#foreach(var pc in ViewBag.Pcs)
{
#pc.Id;//Will give you id
}
You can loop through all properties like this
Create a top level view-model - like you have DashboardViewModel - and add all the necessary models as Properties.
It would be good if you created view-models for each business model required in that top level view-model.
Auto-map the business objects to the new view-models - see AutoMapper for one example. That way you are only passing the information the view actually requires.
I have a composite object set up Project->Appraisal, My appraisal object has a ApprovedMentor object which is not required but when i go to save project Nhib throws and error to say that ApprovedUser has not been set. but its not set because its not a required field. How do i set up this using fluent auto mapping, is it possible?
public class MentoringProject : BaseEntity
{
public MentoringProject()
{
Appraisal = new Appraisal();
}
[NotNullNotEmpty]
[Length(Min=25, Max=1000)]
public virtual string Description { get; set; }
[Length(Min=25, Max=1000)]
public virtual string SupportRequired { get; set; }
[NotNullNotEmpty]
public virtual System.DateTime? DateSubmitted { get; set; }
[NotNullNotEmpty]
public virtual System.DateTime? ClosingDate { get; set; }
[NotNullNotEmpty]
[Size(Min=1)]
public virtual short Duration { get; set; }
[NotNullNotEmpty]
public virtual string Skills { get; set; }
public virtual Appraisal Appraisal { get; set; }
}
public class Appraisal : BaseEntity
{
public Appraisal()
{
ShortlistedMentors = new List<User>();
ApprovedMentor = new User();
College = new RefData();
}
#region Primitive Properties
public virtual bool Decision { get; set; }
public virtual System.DateTime? ApprovedDate { get; set; }
public virtual System.DateTime? AcceptedDate { get; set; }
public virtual System.DateTime? CompletionTargetDate { get; set; }
public virtual string RejectionReason { get; set; }
#endregion
#region Navigation Properties
public virtual IList<User> ShortlistedMentors { get; set; }
public virtual User ApprovedMentor { get; set; }
public virtual RefData College { get; set; }
#endregion
}
It looks to me that you just want to ignore the ShortlistedMentors property which you need to do in your mapping class like this:
map.IgnoreProperty(p => p.ShortlistedMentors);
This answer was posted in this question.
I think i have solved this, when binding the UI to the controller in MVC, MVC creates an empty User object and because that object has required fields set on it using nhib validator and nhib was trying to create a new user object, I got round this by checking if there is a user realtionship to add, if not I set the Appraisal.ApprovedMentor==null