I've changed and added some properties to my server-side classes but can't get the updated data in my breeze/angular app. The added fields stay blank instead of showing the value. I also can't create an entity that i've added. (error). How can i update the metadata in my breeze/angular app to use the latest version? I've tried to fetch the metadata, but getting the message that it already was fetched.
Breeze: Unable to locate a 'Type' by the name: 'New Class'. Be sure to execute a query or call fetchMetadata first
Update (More Info)
I've created a child class related to my Product class. It's called ProductStockItem, so a Product has many ProductStockItems.
ProductStockItem: (new Class)
public class ProductStockItem
{
public int Id { get; set; }
public int ProductId { get; set; }
public string Size { get; set; }
public int Quantity { get; set; }
public bool UseStockQuantity { get; set; }
public decimal PriceAdjustment { get; set; }
public DateTime? DateAvailable { get; set; }
public int DisplayOrder { get; set; }
public bool Deleted { get; set; }
public State State { get; set; }
public DateTime? DateChanged { get; set; }
public DateTime? DateCreated { get; set; }
public virtual Product Product { get; set; }
}
Product:
public class Product
{
private ICollection<ProductCategory> _productCategories;
private ICollection<ProductManufacturer> _productManufacturers;
private ICollection<ProductPicture> _productPictures;
private ICollection<ProductSpecificationAttribute> _productSpecificationAttributes;
private ICollection<ProductStockItem> _productStockItems;
public int Id { get; set; }
public ProductType ProductType { get; set; }
public int ParentGroupedProductId { get; set; }
public int ManufacturerSizeId { get; set; }
public bool VisibleIndividually { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public string MetaTitle { get; set; }
public string MetaDescription { get; set; }
public int DisplayOrder { get; set; }
public bool LimitedToStores { get; set; }
public string Sku { get; set; }
public string UniqueCode { get; set; }
public decimal Price { get; set; }
public decimal OldPrice { get; set; }
public decimal? SpecialPrice { get; set; }
public DateTime? SpecialPriceStartDateTimeUtc { get; set; }
public DateTime? SpecialPriceEndDateTimeUtc { get; set; }
public decimal DiscountPercentage { get; set; }
public bool HasTierPrices { get; set; }
public bool HasStock { get; set; }
public TaxRate TaxRate { get; set; }
public bool SyncToShop { get; set; }
public bool Deleted { get; set; }
public bool Locked { get; set; }
public State State { get; set; }
public DateTime? DateChanged { get; set; }
public DateTime? DateCreated { get; set; }
public virtual ICollection<ProductCategory> ProductCategories
{
get { return _productCategories ?? (_productCategories = new List<ProductCategory>()); }
protected set { _productCategories = value; }
}
public virtual ICollection<ProductManufacturer> ProductManufacturers
{
get { return _productManufacturers ?? (_productManufacturers = new List<ProductManufacturer>()); }
protected set { _productManufacturers = value; }
}
public virtual ICollection<ProductPicture> ProductPictures
{
get { return _productPictures ?? (_productPictures = new List<ProductPicture>()); }
protected set { _productPictures = value; }
}
public virtual ICollection<ProductSpecificationAttribute> ProductSpecificationAttributes
{
get { return _productSpecificationAttributes ?? (_productSpecificationAttributes = new List<ProductSpecificationAttribute>()); }
protected set { _productSpecificationAttributes = value; }
}
public virtual ICollection<ProductStockItem> ProductStockItems
{
get { return _productStockItems ?? (_productStockItems = new List<ProductStockItem>()); }
protected set { _productStockItems = value; }
}
}
Product request:
http://testdomain.local/breeze/DataContext/Products?$filter=Id%20eq%201029&$orderby=Id&$expand=ProductStockItems&
[{"$id":"1","$type":"Erp.Models.ErpModel.Catalog.Product, Erp.Models.ErpModel","Id":1029,"ProductType":"SimpleProduct","ParentGroupedProductId":0,"ManufacturerSizeId":2767,"VisibleIndividually":false,"Name":"Jako Ballenzak Kids - Ash / Action Green","ExtraName":null,"Description":"• Aangenaam functioneel materiaal\nmet moderne oppervlaktestructuur\nvoor de hoogste normen\n• Zeer goede klimaateigenschappen\ndoor actief ademend Twill-Polyester\n• Rekbaar, vormvast en sneldrogend\n\nPolyester-Twill\n100% Polyester,\nbinnenvoering: 100% Polyester","MetaTitle":null,"MetaDescription":null,"DisplayOrder":1,"LimitedToStores":false,"Sku":"9894","UniqueCode":"6_9","Price":34.96,"OldPrice":49.95,"SpecialPrice":null,"SpecialPriceStartDateTime":null,"SpecialPriceEndDateTime":null,"DiscountPercentage":0.00,"HasTierPrices":true,"HasStock":false,"TaxRate":"Tax_21","SyncToShop":true,"Deleted":false,"Locked":false,"State":"Changed","DateChanged":"2014-02-28T10:35:47.733","DateCreated":"2014-02-28T10:35:47.733","ProductCategories":[],"ProductManufacturers":[],"ProductPictures":[],"ProductSpecificationAttributes":[],"ProductStockItems":[]}]
Metadata request:
http://testdomain.local/breeze/DataContext/Metadata
Error Client Side: (create new productStockItem)
Unable to locate a 'Type' by the name: 'ProductStockItem'. Be sure to execute a query or call fetchMetadata first.
function createProductStockItem(initialValues) {
return this.manager.createEntity("ProductStockItem", initialValues);
}
When you rebuild your application, the metadata will get updated. No extra job needed for making the
metadata to get fetched with it's updated state.
Whenever you issue a query on an entity that is included inside the metadata, the updated metadata
will get fetched.
For creating an entity, if you navigate directly to the page of creating an entity prior to any page that includes a query, the metadata won't get fetched in this case.
When you called fetchMetadata(), you still get the error:
Unable to locate a 'Type' by the name: 'New Class'. Be sure to execute a query or call `fetchMetadata` first
That message doesn't indicate that the metadata already was fetched. It still tells you that the entity is unknown and the metadata still not fetched.
Why? Because createEntity() was called before fetchMetadata(). (you can set a break-point and see that in action)
I ran into this before, and what I did, I simply put the fetchMetadata() on application launch.
That will guarantee that it will get fetched first before any call to creating an entity.
Or you can just use a promise:
manager.fetchMetadata().then(createProductStockItem("Initial values"));
Related
Hi I am trying to return all vehicles with their recorded mileage through an api using ASP.Net Core with the following code:
// GET: api/values
[HttpGet]
public IEnumerable<Vehicle> Get()
{
return _context.Vehicles.Include(m=>m.Mileages).ToList();
}
However this only returns the first vehicle with its mileages and not the others (there are five dummy vehicles in the db all with an initial mileage).
If I change the code to:
// GET: api/values
[HttpGet]
public IEnumerable<Vehicle> Get()
{
return _context.Vehicles.ToList();
}
it returns the full list of vehicles but no mileage.
My class files are:
public class Vehicle
{
public Vehicle()
{
Mileages = new List<Mileage>();
}
public int Id { get; set; }
public string Registration { get; set; }
public string Make { get; set; }
public string Model { get; set; }
public Marked Marked { get; set; }
public ICollection<Mileage> Mileages { get; set; }
}
and
public class Mileage
{
public int Id { get; set; }
public DateTime MileageDate { get; set; }
public string RecordedMileage { get; set; }
//Navigation Properties
public int VehicleId { get; set; }
public Vehicle Vehicle { get; set; }
}
thanks for looking!
Tuppers
you can have them auto-load (lazy loading) using proxies... but for that, your foreign entities and collections must be marked virtual in your POCOs:
public class Mileage
{
public int Id { get; set; }
public DateTime MileageDate { get; set; }
public string RecordedMileage { get; set; }
//Navigation Properties
public int VehicleId { get; set; }
public virtual Vehicle Vehicle { get; set; }
}
public class Vehicle
{
public Vehicle()
{
Mileages = new List<Mileage>();
}
public int Id { get; set; }
public string Registration { get; set; }
public string Make { get; set; }
public string Model { get; set; }
public Marked Marked { get; set; }
public virtual ICollection<Mileage> Mileages { get; set; }
}
The proxy creation and lazy loading turned on, but that's the default in EF6.
https://msdn.microsoft.com/en-us/data/jj574232.aspx
Let me know if this works.
Well after a lot of searching I managed to find a solution. I used the following:
[HttpGet]
public IEnumerable<VehicleDto> Get()
{
var query = _context.Vehicles.Select(v => new VehicleDto
{
Registration = v.Registration,
Make = v.Make,
Model = v.Model,
Marked = v.Marked,
Mileages = v.Mileages.Select(m => new MileageDto
{
MileageDate = m.MileageDate,
RecordedMileage = m.RecordedMileage
})
.ToList(),
})
.ToList();
return (IEnumerable<VehicleDto>) query.AsEnumerable();
this doesn't seem to be the most elegant way of doing this, if anyone could offer any advice but it does return what is required.
The DTO's look like:
public class VehicleDto
{
public string Registration { get; set; }
public string Make { get; set; }
public string Model { get; set; }
public Marked Marked { get; set; }
public ICollection<MileageDto> Mileages { get; set; }
}
and
public class MileageDto
{
public DateTime MileageDate { get; set; }
public string RecordedMileage { get; set; }
}
Thanks for taking the time to look at this
Tuppers
When calling the method directly below I get a ObjectDisposedException when calling Mapper.Map with the retrieved list.
System.ObjectDisposedException: The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.
public IEnumerable<Models.Provider> Get(string owner)
{
List<Data.Models.Provider> providers;
using (var db = new Data.ProviderDirectoryContext())
{
providers = db.Providers.Where(p => p.Owner.Name == owner).ToList();
}
var dtoProviders = Mapper.Map<List<Data.Models.Provider>, List<Models.Provider>>(providers);
return dtoProviders;
}
I previously had the code like this (below), I wasn't getting an error, but the database was getting pounded when doing the mapping, and it was taking too long. I don't want to hit the database, when doing the mapping.
public IEnumerable<Models.Provider> Get(string owner)
{
using (var db = new Data.ProviderDirectoryContext())
{
var providers = db.Providers.Where(p => p.Owner.Name == owner).ToList();
var dtoProviders = Mapper.Map<List<Data.Models.Provider>, List<Models.Provider>>(providers);
return dtoProviders;
}
}
How can I retrieve all the data before doing the mapping?
Here is the DbContext and the Data.Models.Provider for your reference.
public class ProviderDirectoryContext : DbContext
{
public DbSet<Owner> Owners { get; set; }
public DbSet<Location> Locations { get; set; }
public DbSet<LocationAuditLog> LocationAuditLog { get; set; }
public DbSet<Office> Offices { get; set; }
public DbSet<OfficePhoneNumber> OfficePhoneNumbers { get; set; }
public DbSet<OfficeAuditLog> OfficeAuditLog { get; set; }
public DbSet<OfficeDay> OfficeDays { get; set; }
public DbSet<Provider> Providers { get; set; }
public DbSet<ProviderPhoneNumber> ProviderPhoneNumbers { get; set; }
public DbSet<ProviderAuditLog> ProviderAuditLog { get; set; }
public DbSet<ProviderType> ProviderTypes { get; set; }
public DbSet<ProviderSpecialty> ProviderSpecialties { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
modelBuilder.Entity<Provider>().HasRequired(cn => cn.Owner).WithMany().WillCascadeOnDelete(false);
modelBuilder.Entity<Office>().HasRequired(cn => cn.Owner).WithMany().WillCascadeOnDelete(false);
}
}
public class Provider
{
public int Id { get; set; }
public int OwnerId { get; set; }
public virtual Owner Owner { get; set; }
public int? ProviderTypeId { get; set; }
public virtual ProviderType ProviderType { get; set; }
public int? ProviderSpecialtyId { get; set; }
public virtual ProviderSpecialty ProviderSpecialty { get; set; }
[Required]
[StringLength(75)]
public string FirstName { get; set; }
[StringLength(75)]
public string MiddleName { get; set; }
[Required]
[StringLength(75)]
public string LastName { get; set; }
[StringLength(100)]
public string EmailAddress { get; set; }
public virtual ICollection<ProviderPhoneNumber> PhoneNumbers { get; set; }
public string Note { get; set; }
public DateTime? InactiveOn { get; set; }
public int OfficeId { get; set; }
public virtual Office Office { get; set; }
public virtual ICollection<ProviderAuditLog> AuditLog { get; set; }
[Required]
public DateTime CreatedOn { get; set; }
[Required]
[StringLength(75)]
public string CreatedBy { get; set; }
[Required]
public DateTime ModifiedOn { get; set; }
[Required]
[StringLength(75)]
public string ModifiedBy { get; set; }
}
Thanks for the help!
The problem is that the Models.Provider class contains other classes like Models.Office, and Models.PhoneNumbers that were not eagerly loaded by the query. In addition to that, the Models.Provider class needs to be flattened. The Mapper wants to recursively map everything, and it keeps going down to the next class. For example, Provider.Office.Location.Offices.
The solution is to flatten Models.Provider and add .Include() to the query so it eagerly loads the data required.
I'll clean this up a bit more, but this is currently working.
public IEnumerable<Models.Provider> Get(string owner)
{
List<Data.Models.Provider> providers;
using (var db = new Data.ProviderDirectoryContext())
{
providers = db.Providers
.Where(p => p.Owner.Name == owner)
.Include("ProviderType")
.Include("ProviderSpecialty")
.Include("Office")
.Include("PhoneNumbers")
.ToList();
}
var dtoProviders = Mapper.Map<List<Data.Models.Provider>, List<Models.Provider>>(providers);
return dtoProviders;
}
public class Provider
{
public int Id { get; set; }
public int OwnerId { get; set; }
public int OfficeId { get; set; }
public string OfficeName { get; set; }
public int? ProviderTypeId { get; set; }
public string ProviderTypeName { get; set; }
public int? ProviderSpecialtyId { get; set; }
public string ProviderSpecialtyName { get; set; }
public string FirstName { get; set; }
public string MiddleName { get; set; }
public string LastName { get; set; }
public string EmailAddress { get; set; }
public virtual ICollection<PhoneNumber> PhoneNumbers { get; set; }
public string Note { get; set; }
public DateTime? InactiveOn { get; set; }
public DateTime CreatedOn { get; set; }
public string CreatedBy { get; set; }
public DateTime ModifiedOn { get; set; }
public string ModifiedBy { get; set; }
}
I am not sure how much this will help with performance but declaring the variable you don't want to dispose outside the using statement should fix your dispose exception.
public IEnumerable<Models.Provider> Get(string owner)
{
IEnumerable<Models.Provider> dtoProviders;
using (var db = new Data.ProviderDirectoryContext())
{
List<Data.Models.Provider> providers = db.Providers.Where(p => p.Owner.Name == owner).ToList();
dtoProviders = Mapper.Map<List<Data.Models.Provider>, List<Models.Provider>>(providers);
}
return dtoProviders;
}
I am in an MVC4 application and i am using EF CodeFirst.
When I try to run the following code:
public void Autorizare(int cerereId, Persoana persoana)
{
var cerere = _db.Cereri.Find(cerereId);
cerere.Autorizare.Add(persoana);
_db.SaveChanges();
}
I get an error like this:
Entities in 'CerereDbContext.Persoane' participate in the 'Actiune_Executanti' relationship. 0 related 'Actiune_Executanti_Source' were found. 1 'Actiune_Executanti_Source' is expected.
i have tried Entity(Actiune).State = EntityState.Modified, but no results.
I have a main POCO:
public class Cerere
{
public int Id { get; set; }
...
public virtual ICollection<Actiune> Actiuni { get; set; }
...
}
the Actiune class looks like this
public class Actiune
{
public int Id { get; set; }
public DateTime Data { get; set; }
public String Nume { get; set; }
public virtual ICollection<Persoana> Executanti { get; set; }
public String Stadiu { get; set; }
public String Obs { get; set; }
}
And Persoana:
public class Persoana
{
public int Id { get; set; }
public DateTime Data { get; set; }
public String Nume { get; set; }
}
From your model the Cerere does not have a property named Autorizare; however it does have one named Actiuni. Which is of type Actiune not Persoana which is what you are trying to add to it. Please post the rest of the Class Definition.
I'm new to automapper and I'm having a problem with it. In this case the automapper is used to map models(EntityFramework generated) to my own viewmodels. This is what happens, the sourcemodel with it's values is mapped to a destinationmodel but the dest values are always null. What's going on with the values?
Now what did I do:
I referenced the automapper to my project and bootstrapped the mappings.
public static void RegisterAutoMapperMappings()
{
Mapper.Initialize(x =>
{
// Add the mappingprofiles you configured below
x.AddProfile(new RegistrationViewModelProfile());
});
}
public static IMappingExpression<TSource, TDest> IgnoreAllUnmapped<TSource, TDest>(this IMappingExpression<TSource, TDest> expression)
{
expression.ForAllMembers(opt => opt.Ignore());
return expression;
}
public class RegistrationViewModelProfile : Profile
{
protected override void Configure()
{
CreateMap<RegistrationViewModel, contact>().IgnoreAllUnmapped();
CreateMap<contact, RegistrationViewModel>().IgnoreAllUnmapped();
CreateMap<RegistrationViewModel, emailaddress>().IgnoreAllUnmapped();
CreateMap<emailaddress, RegistrationViewModel>().IgnoreAllUnmapped();
CreateMap<RegistrationViewModel, password>().IgnoreAllUnmapped();
CreateMap<password, RegistrationViewModel>().IgnoreAllUnmapped();
//Always check if mapping is valid
Mapper.AssertConfigurationIsValid();
}
}
My viewmodel:
public class RegistrationViewModel
{
public HttpPostedFileBase file { get; set; }
public String EmailAddress { get; set; }
public String Password { get; set; }
public string contact_givenname { get; set; }
public string contact_surname_prefix { get; set; }
public string contact_surname { get; set; }
public string contact_gender { get; set; }
public string contact_country { get; set; }
public string contact_residence { get; set; }
public Nullable<DateTime> contact_birth_date{ get; set; }
public DateTime create_date { get; set; }
public ICollection<int> Contact_roles { get; set; }
public string Emailaddress_verificationkey { get; set; }
}
My model:
public partial class contact
{
public contact()
{
this.contact_connection_rel = new HashSet<contact_connection_rel>();
this.contact_emailaddress_password_rel = new HashSet<contact_emailaddress_password_rel>();
this.contact_emailaddress_rel = new HashSet<contact_emailaddress_rel>();
this.contact_service_role_rel = new HashSet<contact_service_role_rel>();
this.given_answer = new HashSet<given_answer>();
this.given_answer1 = new HashSet<given_answer>();
}
public int contact_id { get; set; }
public string contact_initials { get; set; }
public string contact_givenname { get; set; }
public string contact_surname_prefix { get; set; }
public string contact_surname { get; set; }
public string contact_nickname { get; set; }
public string contact_gender { get; set; }
public Nullable<System.DateTime> contact_birth_date { get; set; }
public string contact_country { get; set; }
public string contact_residence { get; set; }
public string contact_ssn { get; set; }
public Nullable<System.DateTime> create_date { get; set; }
public Nullable<System.DateTime> modify_date { get; set; }
public Nullable<System.DateTime> delete_date { get; set; }
public virtual ICollection<contact_connection_rel> contact_connection_rel { get; set; }
public virtual ICollection<contact_emailaddress_password_rel> contact_emailaddress_password_rel { get; set; }
public virtual ICollection<contact_emailaddress_rel> contact_emailaddress_rel { get; set; }
public virtual ICollection<contact_service_role_rel> contact_service_role_rel { get; set; }
public virtual ICollection<given_answer> given_answer { get; set; }
public virtual ICollection<given_answer> given_answer1 { get; set; }
}
And to test the configuration the following lines are used. The vars contain the destination objects but are always null:
contact c = new contact();
contact testC = unitOfWork.ContactRepository.Find(82);
var x = Mapper.Map<contact, RegistrationViewModel>(testC);
var y = Mapper.Map(regModel, c, typeof(RegistrationViewModel), typeof(contact));
var b = Mapper.DynamicMap<RegistrationViewModel, contact>(regModel);
var z = Mapper.Map<RegistrationViewModel, contact>(regModel, c);
var w = Mapper.Map<RegistrationViewModel, contact>(regModel);
expression.ForAllMembers(opt => opt.Ignore());
You're telling AutoMapper to ignore all properties, so nothing gets mapped.
If you just want to ignore non-matching properties, see this answer for one way, otherwise you're going to have to explicitly map each property between the objects.
I created a WCF service with Entity Framework.
I have 2 tables : Theaters and Locality. Locality as a foreign key in Theaters.
My method :
public theater[] GetTheaters()
{
using (Entities context = new Entities())
{
return context.theater.ToArray();
}
}
I have to remove the "virtual" keyword from "public virtual locality locality { get; set; }" in my theater class. Otherwise, I get a CommunicationException.
But when I do that, I get my list of theaters but the locality is null...
How can I get the locality ?
Thanks
My model class ( I also have other entities) :
public partial class locality
{
public locality()
{
this.theater = new HashSet<theater>();
}
public int idLocality { get; set; }
public int npa { get; set; }
public string locality1 { get; set; }
public ICollection<theater> theater { get; set; }
}
public partial class theater
{
public theater()
{
this.session = new HashSet<session>();
}
public int idTheater { get; set; }
public string name { get; set; }
public string address { get; set; }
public int idLocality { get; set; }
public double latitude { get; set; }
public double longitude { get; set; }
public int seats { get; set; }
public string phone { get; set; }
public string email { get; set; }
public bool threeD { get; set; }
public locality locality { get; set; }
public ICollection<session> session { get; set; }
}
Here is the error that I get :
"Object graph for type 'locality' contains cycles and cannot be serialized if reference tracking is disabled.
EDIT :
The solution that I found :
In my locality class, I had a Collection of theaters.
I had to add "private to the setter like this :
" public ICollection theater { get; private set; }"
So it works, but I still have a problem, I can't access to the theaters from the locality entity anymore. (no more bi-directional)
If you want to force related entities to load, you can use the Include method to do so. By default, related entities are loaded Lazily.
Your example would be:
public theater[] GetTheaters()
{
using (Entities context = new Entities())
{
return context.theater.Include(t=>t.Locality).ToArray();
}
}
You can use eager loading or explicit loading. With eager loading you use the Include extension method:
return context.Theater.Include(t => t.Locality).ToArray();
You're missing the correct annotations to create the relationships. See the code below. (or create the relationships yourself if using the FluentAPI)
Look for the [Key] and [ForeignKey] annotations, as well as the virtual keyword.
public partial class locality
{
public locality()
{
//this.theater = new HashSet<theater>();
}
[Key]
public int idLocality { get; set; }
public int npa { get; set; }
public string locality1 { get; set; }
public virtual ICollection<theater> theaters { get; set; }
}
public partial class theater
{
public theater()
{
//this.session = new HashSet<session>();
}
[Key]
public int idTheater { get; set; }
public string name { get; set; }
public string address { get; set; }
public int idLocality { get; set; }
public double latitude { get; set; }
public double longitude { get; set; }
public int seats { get; set; }
public string phone { get; set; }
public string email { get; set; }
public bool threeD { get; set; }
[ForeignKey("idLocality")]
public virtual locality locality { get; set; }
//public ICollection<session> session { get; set; }
}