I have this code :
public class OrderModel
{
public List<Order> Orders { get; set; }
}
public class Order
{
public string Code { get; set; }
public DateTime CreationDate { get; set; }
public Customer Customer { get; set; }
}
public class Customer
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
I'd like get a List<MyClass> MyClass look like :
public class MyClass
{
public string OrderCode { get; set; }
public string OrderCreationDate { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
Automapper can help me for this ? if no other solution to avoid loop ?
Thanks,
To do DTO flattening with automapper looks at this post and also this. They should answer your question.
If you don't want to use automapper I would use a simple Linq. Something like this
var myClassList = (from p in OrderModel.Orders select new MyClass()
{
OrderCode = p.Code,
OrderCreationDate = p.CreationDate,
FirstName = p.Customer.FirstName,
LastName = p.Customer.LastName
}).ToList();
Related
Entity is:
public partial class Persons
{
public int Id { get; set; }
public string? Name { get; set; }
public string? Surname { get; set; }
public string? Number { get; set; }
public string? Address { get; set; }
public string? PublicId { get; set; }
public string? FatherName { get; set; }
public string? MotherName { get; set; }
}
Also Model is:
public partial class OnlyPrivateProp
{
public int Id { get; set; }
public string? Name { get; set; }
public string? Surname { get; set; }
}
And controller:
public class DemoController : Controller
{
_context c;
public DemoController(_context c)
{
this.c = c;
}
public IActionResult Index()
{
ET model= new ET();
var select = ..............
return View();
}
}
I dont want to use all data to display only three colunms. So I defined a model has three prop. But I cant pass data to model and cant select data and cant send controller.
You could create different ViewModel for different Views
The entities models are mapped to the tables in your database,you could check the documents related with EFCore
For your requirement,you could fill the viewmodel and pass the value to your View as below:
[Table("SomeTable")]
public class SomeEntity
{
public int Id { get; set; }
public string Prop1 { get; set; }
public string Prop2 { get; set; }
public string Prop3 { get; set; }
...........
}
public class ViewModel
{
public string Prop1 { get; set; }
public string Prop3 { get; set; }
}
public IActionResult SomeAction()
{
...........
var vmlist = _context.SomeEntity.Select(x => new ViewModel{ Prop1 = x.Prop1, Prop3 = x.Prop3 }).ToList();
return View(vmlist);
}
And the documents related with MVC
I'm having a hard time passing the value of an object to a model.
I wanted to pass the data from this obj to the model class
SingleTransactResponse obj = JsonConvert.DeserializeObject<SingleTransactResponse>(await response.Content.ReadAsStringAsync());
SaveTransaction(JsonConvert.SerializeObject(obj));
I used this function to get the data from the model and save it to the database
PayoutEntities payoutdb = new PayoutEntities();
public String SaveTransaction(payout_transaction model)
{
payoutdb.payout_transaction.Add(model);
payoutdb.SaveChanges();
return "Success";
}
SingleTransactResponse Class
public class SingleTransactResponse {
public String senderRefId { get; set; }
public String tranRequestDate { get; set; }
public String particulars { get; set; }
public List<Beneficiary> beneficiary { get; set; }
}
Beneficiary Class
public class Beneficiary
{
public String accountNumber { get; set; }
public String name { get; set; }
public List<Address> address { get; set; }
}
Address Class
public class Address
{
public String line1 { get; set; }
public String line2 { get; set; }
public String city { get; set; }
public String province { get; set; }
public String zipCode { get; set; }
public String country { get; set; }
}
payout_transaction class
public partial class payout_transaction
{
public string transid { get; set; }
public string batchid { get; set; }
public string senderRefId { get; set; }
public string requestDate { get; set; }
public string benefName { get; set; }
public string benefacctno { get; set; }
public string status { get; set; }
public string errdesc { get; set; }
public string transaction_fee { get; set; }
}
I'm just having a hard time converting the obj to the model. I've tried JsonConvert.SerializeObject(obj) but it only converts it to string. Is there any possible way to do this or any work around to solve this problem?
you can do like this
var payoutModel = new payout_transaction
{
senderRefId = obj.senderRefId,
requestDate = obj.tranRequestDate,
.... other properties
}
SaveTransaction(payoutModel);
I am using ValueInjecter to map domain classes to my view models. My domain classes are complex. To borrow an example from this question:
public class Person
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public Address Address { get; set; }
}
public class Address
{
public int Id { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
}
// VIEW MODEL
public class PersonViewModel
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int PersonId { get; set; }
public int AddressId { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
}
I have looked at FlatLoopInjection, but it expects the view model classes to be prefixed with nested domain model type like so:
public class PersonViewModel
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int Id { get; set; }
public int AddressId { get; set; }
public string AddressCity { get; set; }
public string AddressState { get; set; }
public string AddressZip { get; set; }
}
The OP in the linked question altered his view models to match the convention expected by FlatLoopInjection. I don't want to do that.
How can I map my domain model to the original unprefixed view model? I suspect that I need to override FlatLoopInjection to remove the prefix, but I am not sure where to do this. I have looked at the source for FlatLoopInjection but I am unsure if I need to alter the Match method or the SetValue method.
you don't need flattening, add the map first:
Mapper.AddMap<Person, PersonViewModel>(src =>
{
var res = new PersonViewModel();
res.InjectFrom(src); // maps properties with same name and type
res.InjectFrom(src.Address);
return res;
});
and after that you can call:
var vm = Mapper.Map<PersonViewModel>(person);
I have three simple classes and I am wiring up EF6 to an existing database.
Classes are as follows
namespace Infrastructure.Models
{
[Table("Applications")]
public class Application
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid ApplicationID { get; set; }
public DateTime DateTime { get; set; }
public string CompletedZipFileURL { get; set; }
public virtual BusinessInfo BusinessInfo { get; set; }
public Application()
{
this.ApplicationID = Guid.NewGuid();
this.DateTime = DateTime.Now;
this.CompletedZipFileURL = string.Empty;
this.BusinessInfo = new BusinessInfo();
this.BusinessInfo.ApplicationID = this.ApplicationID;
}
}
[Table("BusinessInfo")]
public class BusinessInfo
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid BusinessID { get; set; }
public Guid ApplicationID { get; set; }
public string BusinessName { get; set; }
public string BusinessType { get; set; }
public string StreetAddress { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
public string BusinessTelephone { get; set; }
public string FEIN { get; set; }
public string ILSalesTaxNo { get; set; }
public string IncorporateDate { get; set; }
public virtual ApplicantInfo ApplicantInfo {get;set;}
public BusinessInfo()
{
this.BusinessID = Guid.NewGuid();
this.ApplicantInfo = new ApplicantInfo();
this.ApplicantInfo.BusinessID = this.BusinessID;
}
}
public class ApplicantInfo
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid ApplicantID { get; set; }
public Guid BusinessID { get; set; }
public string Name { get; set; }
public string Title { get; set; }
public string HomeAddress { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
public string EmailAddress { get; set; }
public string PhoneNo { get; set; }
public string Criminal { get; set; }
public ApplicantInfo()
{
this.ApplicantID = Guid.NewGuid();
}
}
}
My Context Class looks like the following:
public class SIDEntities : DbContext
{
public SIDEntities() : base(Settings.GetSetting("ConnectionString"))
{
base.Configuration.ProxyCreationEnabled = false;
base.Configuration.LazyLoadingEnabled = false;
}
public virtual DbSet<Infrastructure.Models.Application> Application { get; set; }
public virtual DbSet<Infrastructure.Models.BusinessInfo> BusinessInfo { get; set; }
public virtual DbSet<Infrastructure.Models.ApplicantInfo> ApplicantInfo { get; set; }
}
On my existing database, I have the following table names and fields:
Applications (ApplicationID : uniqueidentifier, DateTime : datetime, CompletedZipFileURL : varchar(500))
BusinessInfo (BusinessID : uniqueidentifier, ApplicationID : uniqueidentifier,...)
ApplicationInfo (ApplicantID : uniqueidentifier, BusinessID : uniqueidentifier, ...)
For some reason, as soon as I attempt to do a query against the root Application POCO, I am receiving an error to the effect of "{"Invalid column name 'BusinessInfo_BusinessID'."}".
I have attempted to debug this issue checking out various SO posts but the examples/fixes don't apply to my database first scenario.
The query that is throwing the exception is:
public static Infrastructure.Models.Application Find(Guid id)
{
using (SIDEntities cntx = new SIDEntities())
{
Infrastructure.Models.Application x = new Infrastructure.Models.Application();
//the line below is where the error occurs
x = cntx.Application.Where(m => m.ApplicationID == id).SingleOrDefault();
return x;
}
}
I can see while debugging that the query being generated from LINQ is as follows
SELECT 1 AS [C1],
[Extent1].[ApplicationID] AS [ApplicationID],
[Extent1].[DateTime] AS [DateTime],
[Extent1].[CompletedZipFileURL] AS [CompletedZipFileURL],
[Extent1].[BusinessInfo_BusinessID] AS [BusinessInfo_BusinessID]
FROM [dbo].[Applications] AS [Extent1]
I understand WHY I am getting the error back and that is because there is no "BusinessInfo_BusinessID" column in the Applications table.
I would greatly appreciate any help/pointers that I could get on this one.
Check this out
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid BusinessID { get; set; }
In your query, change Where and SingleOrDefault to:
x = cntx.Application.SingleOrDefault(m => m.ApplicationID == id);
Hope it helps
I have discovered that because I had a one-to-one relationship (that doesn't technically exist on the SQL server, I had to add a foreign key annotation underneath the [Key] property as noted:
Entity Framework 6: one-to-one relationship with inheritance
and
http://www.entityframeworktutorial.net/entity-relationships.aspx
I can't understand what i'm doing wrong. Every time I'm getting this error:
The entity or complex type 'BusinessLogic.CompanyWithDivisionCount' cannot be constructed in a LINQ to Entities query.
I need to get info from 'Company' table and divisions count of each company from 'Division' table, and then make PagedList. Here is my 'Company' table:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel.DataAnnotations;
using BusinessLogic.Services;
using BusinessLogic.Models.ValidationAttributes;
namespace BusinessLogic.Models
{
public class Company
{
public Company()
{
Country = "US";
Status = true;
}
public int Id { get; set; }
[Required]
[UniqueCompanyName]
public string Name { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
public int Zip { get; set; }
public string Country { get; set; }
public string ContactInfo { get; set; }
[Required]
public DateTime EffectiveDate { get; set; }
public DateTime TerminationDate { get; set; }
public bool Status { get; set; }
[Required]
public string URL { get; set; }
public string EAP { get; set; }
public string EAPCredentials { get; set; }
public string BrandingColors { get; set; }
public string Comments { get; set; }
}
}
Here is my domain model:
public class Company
{
public Company()
{
Country = "US";
Status = true;
}
public int Id { get; set; }
[Required]
[UniqueCompanyName]
public string Name { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string State { get; set; }
public int Zip { get; set; }
public string Country { get; set; }
public string ContactInfo { get; set; }
[Required]
public DateTime EffectiveDate { get; set; }
public DateTime TerminationDate { get; set; }
public bool Status { get; set; }
[Required]
public string URL { get; set; }
public string EAP { get; set; }
public string EAPCredentials { get; set; }
public string BrandingColors { get; set; }
public string Comments { get; set; }
}
public class CompanyWithDivisionCount: Company // I'm using this
{
public int DivisionCount { get; set; }
}
Here is my controller:
public ActionResult CompaniesList(int? page)
{
var pageNumber = page ?? 1;
var companies = companyService.GetCompaniesWithDivisionsCount2();
var model = companies.ToPagedList(pageNumber, PageSize);
return View(model);
}
And here is my service part:
public IQueryable<CompanyWithDivisionCount> GetCompaniesWithDivisionsCount2()
{
return (from c in dataContext.Companies.AsQueryable()
select new CompanyWithDivisionCount
{
Id = c.Id,
Name = c.Name,
Status = c.Status,
EffectiveDate = c.EffectiveDate,
URL = c.URL,
EAP = c.EAP,
EAPCredentials = c.EAPCredentials,
Comments = c.Comments,
DivisionCount = (int)dataContext.Divisions.Where(b => b.CompanyName == c.Name).Count()
});
}
}
Thanks for help!!!
Creator of PagedList here. This has nothing to do with PagedList, but rather is an Entity Framework issue (I'm no expert on Entity Framework, so can't help you there). To confirm that this is true, write a unit test along the following lines:
[Test]
public void ShouldNotThrowAnException()
{
//arrange
var companies = companyService.GetCompaniesWithDivisionsCount2();
//act
var result = companies.ToList();
//assert
//if this line is reached, we win! no exception on call to .ToList()
}
I would consider changing you data model if possible so that instead of relating Companies to Divisions by name strings, instead use a properly maintained foreign key relationship between the two objects (Divisions should contain a CompanyID foreign key). This has a number of benefits (including performance and data integrity) and will almost certainly make your life easier moving forward if you need to make further changes to you app (or if any company ever decides that it may re-brand it's name).
If you create a proper foreign key relationship then your domain model could look like
public class Company
{
...
public virtual ICollection<Division> Divisions{ get; set; }
public int DivisionCount
{
get
{
return this.Divisions.Count()
}
}
...
}