Sql Tables Here
public partial class Users
{
public Users()
{
UsersRelationFollower = new HashSet<UsersRelation>();
UsersRelationFollowing = new HashSet<UsersRelation>();
Vote = new HashSet<Vote>();
VoteRating = new HashSet<VoteRating>();
}
public string Id { get; set; }
public string UserType { get; set; }
public string UserName { get; set; }
public string Mail { get; set; }
public string ImageUrl { get; set; }
public DateTime CreationDate { get; set; }
public DateTime? ModifyDate { get; set; }
public bool State { get; set; }
public virtual UserPasswords UserPasswords { get; set; }
public virtual CorporateProperty CorporateProperty { get; set; }
public virtual UserProperty UserProperty { get; set; }
public virtual ICollection<UsersRelation> UsersRelationFollower { get; set; }
public virtual ICollection<UsersRelation> UsersRelationFollowing { get; set; }
public virtual ICollection<Vote> Vote { get; set; }
public virtual ICollection<VoteRating> VoteRating { get; set; }
}
public partial class UserProperty
{
public string Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
public DateTime BirthDay { get; set; }
public string Gender { get; set; }
public string Locale { get; set; }
public string PhoneNumber { get; set; }
public bool State { get; set; }
public virtual Users IdNavigation { get; set; }
}
public partial class CorporateProperty
{
public string Id { get; set; }
public string OrganisationName { get; set; }
public string Website { get; set; }
public bool State { get; set; }
public virtual Users IdNavigation { get; set; }
}
UserControllerClass
// GET: api/Users/5
[HttpGet("{id}")]
public async Task<IActionResult> GetUsers([FromRoute] string id)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
var users = await _context.Users.SingleOrDefaultAsync(m => m.Id == id);
if (users == null)
{
return NotFound();
}
return Ok(users);
}
My problem is exactly this; User information is coming but the password and property table information is not coming.
How to modify the following line solves my problem?
var users = await _context.Users.SingleOrDefaultAsync(m => m.Id == id);
based on your code this would also hydrate your CorporateProperty & UseProperty objects, etc.
var user = await _context.Users.Include(user => user.UserProperty).Include
(user => user.CorporateProperty).SingleOrDefaultAsync(user => user.Id == id);
lazy loading doesn't exist yet so you have Eager Loading to play with for now.
Surprised you didn't roll with Identity since this all of this would have been taken care for you especially Passwords... Hope you aren't rolling your own hash for that..
Just add in the custom class / collection objects you need.
you can also check out this link
https://learn.microsoft.com/en-us/ef/core/querying/related-data
Related
My class Address:
public class Address
{
public int Id { get; set; }
public string Street { get; set; }
public string ZipCode { get; set; }
public string StreetNumber { get; set; }
public string District { get; set; }
public string Complement { get; set; }
public string City { get; set; }
public string State { get; set; }
public virtual ICollection<Business> Business { get; set; }
}
My class Business:
public class Business
{
public int Id { get; set; }
public string CNPJ { get; set; }
public string SocialReson { get; set; }
public string FantasyName { get; set; }
public string BusinessName { get; set; }
public Priority Priority { get; set; }
public Category Category { get; set; }
public int AddressId { get; set; }
public string MainImage { get; set; }
public virtual Address Address { get; set; }
public virtual ICollection<BusinessPhotos> BusinessPhotos { get; set; }
public virtual ICollection<OpeningHours> OpeningHours { get; set; }
public virtual ICollection<Product> Products { get; set; }
public virtual ICollection<SocialMedia> SocialMedias { get; set; }
}
My Delete method:
public async Task Delete(int id)
{
var business = await _context
.Business
.Include(x => x.Address)
.FirstOrDefaultAsync(x => x.Id == id);
if (business == null)
return;
_context.Business.Remove(business);
await _context.SaveChangesAsync();
}
Even if I leave the FK AddressId as .OnDelete(DeleteBehavior.Cascade), I can't delete the address together.
I'm using .NET 6 and SQL Server.
I have two table like this -
public class Job
{
public int Id { get; set; }
public string Name { get; set; }
public DateTime AddedTime { get; set; } = DateTime.Now;
public DateTime LastEdit { get; set; } = DateTime.Now;
public string Explanation { get; set; }
public string PhotoString { get; set; }
public bool isActive { get; set; } = true;
public int CompanyId { get; set; }
public Company Company { get; set; }
}
and company -
public class Company
{
public int Id { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public string Explanation { get; set; }
public string Email { get; set; }
public string PhoneNumber { get; set; }
public string PhotoString { get; set; }
public bool isActive { get; set; } = true;
public int AppUserId { get; set; }
public AppUser AppUser { get; set; }
public List<Job> Jobs { get; set; }
}
I only want to get AppUserId from Company and all Jobs from every Company. I tried this and it gave me error.
using var context = new SocialWorldDbContext();
return await context.Jobs.Where(I => I.isActive == true && I.Company.isActive).Include(I=>I.Company.AppUserId).ToListAsync();
So my question is there any way I can get this data from parent?
Include adds whole entities to the output. To add just one property use Select, something like
context.Jobs
.Where(I => I.isActive == true && I.Company.isActive)
.Select(e => new {Job=e, CompanyAppUserId = e.Company.AppUserId})
.ToListAsync();
I'm trying to delete the entities related to each other when I remove a row, but it isn't deleting the related entities. It is only deleting one entity and not the others.
My model
public class Company
{
public int CompanyId { get; set;}
public string CompanyName { get; set; }
public int CompanySize { get; set; }
public string Branche { get; set;}
public string Description {get; set;}
public Recruiter Recruiter { get; set; }
public ICollection<Post> Posts { get; set; }
}
public class Recruiter
{
public int RecruiterId { get; set; }
public string Name { get; set; }
public string Email { get; set; }
public string PhoneNumber { get; set; }
public int CompanyId { get; set; }
public Company Company { get; set; }
}
public class Post
{
public int PostId { get; set; }
public string Title { get; set; }
public string Location { get; set; }
public int Compensation { get; set; }
public string Education { get; set; }
public string StartDate { get; set; }
public string Type { get; set; }
public string Profession { get; set; }
public string Language { get; set; }
public string Description { get; set; }
public string Hours { get; set; }
public bool Checked { get; set; }
public int CompanyId { get; set; }
public Company Company { get; set; }
}
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.Entity<Post>()
.HasOne(post => post.Company)
.WithMany(company => company.Posts)
.IsRequired()
.OnDelete(DeleteBehavior.Cascade);
modelBuilder.SeedDatabase();
}
The call I make. So when I delete a post, I want that all the related entities are being deleted.
public Post DeclinePostRequest(int postId)
{
var request = _dbContext.Posts.Where(post => post.PostId == postId).Include(post => post.Company).ThenInclude(company => company.Recruiter).FirstOrDefault();
if(!request.Checked)
{
_dbContext.Posts.Remove(request);
_dbContext.SaveChanges();
return request;
}
return null;
}
You are deleting the many side of a 1-to-many relationship there. Everything is working as expected.
Try deleting a Company instead.
I'm using EF code first migrations in MVC5 with SQL Server.
I created a post method, I'm posting DTO data from the client and its all fine i believe, but when i try to save the data to the db i get this invalid column name exception on a foreign key property.
This is the first time i actually counter this error. I checked other questions and most answers were related to the [ForeignKey] data annotation but i think i implemented it the right way
This is the Model
public class ServiceProvider
{
public Guid Id { get; set; }
public string Name { get; set; }
public string PhoneNumber { get; set; }
public double YearsOfExperiance { get; set; }
public double AverageRank { get; set; }
public string Nationality { get; set; }
public ICollection<JobImage> JobImages { get; set; }
public ICollection<Review> Reviews { get; set; }
public ICollection<Rank> Ranks { get; set; }
public bool Active { get; set; }
[ForeignKey("Category")]
public int CategoryId { get; set; }
public Category Category { get; set; }
public bool Approved { get; set; }
}
This is the controller ActionResult method
[HttpPost]
public ActionResult AddServiceProvider(ServiceProviderDTO serviceProvider)
{
bool isInDb = _context.ServiceProviders.Any(s => s.Name == serviceProvider.Name) ? true : false;
//var serviceProviderInDb = _context.ServiceProviders.Where(s => s.Name == serviceProvider.Name).FirstOrDefault();
var newServiceProvider = new ServiceProvider();
if (isInDb == false)
{
newServiceProvider = new ServiceProvider
{
Id = Guid.NewGuid(),
Name = serviceProvider.Name,
PhoneNumber = serviceProvider.PhoneNumber,
YearsOfExperiance = serviceProvider.YearsOfExperiance,
Nationality = serviceProvider.Nationality,
CategoryId = serviceProvider.CategoryId,
Active = true,
Approved = serviceProvider.Approved == null ? false : serviceProvider.Approved.Value
};
_context.ServiceProviders.Add(newServiceProvider);
_context.SaveChanges();
}
return RedirectToAction("Index", "Home");
}
The error occurs on _context.SaveChanges();
It states that CategoryId is an invalid column name
This is not the first time that i use code first migrations and i never came across this error before so i really have no idea why this happens!
I would have the model like this.
The ForeignKey attribute belong to the Category property
public class ServiceProvider
{
public Guid Id { get; set; }
public string Name { get; set; }
public string PhoneNumber { get; set; }
public double YearsOfExperiance { get; set; }
public double AverageRank { get; set; }
public string Nationality { get; set; }
public ICollection<JobImage> JobImages { get; set; }
public ICollection<Review> Reviews { get; set; }
public ICollection<Rank> Ranks { get; set; }
public bool Active { get; set; }
public int CategoryId { get; set; }
[ForeignKey("CategoryId")]
public Category Category { get; set; }
public bool Approved { get; set; }
}
you need delete this property public int CategoryId { get; set; }
your property public Category Category { get; set; } is the ForeignKey and add the DataAnnotations [ForeignKey("CategoryId")]
it would look like this
public class ServiceProvider
{
public Guid Id { get; set; }
public string Name { get; set; }
public string PhoneNumber { get; set; }
public double YearsOfExperiance { get; set; }
public double AverageRank { get; set; }
public string Nationality { get; set; }
public ICollection<JobImage> JobImages { get; set; }
public ICollection<Review> Reviews { get; set; }
public ICollection<Rank> Ranks { get; set; }
public bool Active { get; set; }
[ForeignKey("Category")]
public int CategoryId { get; set; }
public Category Category { get; set; }
public bool Approved { get; set; }
}
I'm writing a simple .net core application with Entity Framework. I have a situation where reference of related entity is null after saving the record. Please see below code and screen shots for more understanding.
As you can see in the below pic that reference is created with the Organization Entity.
But when I get all the Listing from the context then reference is gone.
Organization Entity
public class Organization
{
public Organization()
{
this.Listings = new List<Listing>();
this.ContactRoles = new List<ContactRole>();
}
[Key]
public int Id { get; set; }
public string OrgName { get; set; }
public string OrgWebsite { get; set; }
public string OrgMissionStatement { get; set; }
public string OrgOwner { get; set; }
public string OrgDescription { get; set; }
public bool IsVerified { get; set; }
public string Address1 { get; set; }
public string Address2 { get; set; }
public string City { get; set; }
public int Zipcode { get; set; }
//public string Country { get; set; }
//ForeignKey
[ForeignKey("Contact")]
public int ContactId { get; set; }
public virtual Contact Contact { get; set; }
public virtual List<ContactRole> ContactRoles { get; set; }
public virtual List<Listing> Listings { get; set; }
}
Listing Entity
[Table("Listing")]
public class Listing
{
[Key]
public int Id { get; set; }
public string ListingTitle { get; set; }
public string ListingDescription { get; set; }
[ForeignKey("Organization")]
public int OrgId { get; set; }
public virtual Organization Organization { get; set; }
}
Controller
public IEnumerable<Listing> GetAll()
{
return _context.Listings;
}
public Listing GetById(int id)
{
return _context.Listings.Find(id);
}
public Listing Create(Listing listing)
{
try
{
var org = _context.Organizations.SingleOrDefault(x => x.Id == listing.OrgId);
org.Listings.Add(listing);
_context.Listings.Add(listing);
_context.SaveChanges();
return listing;
}
catch (Exception ex)
{
throw ex;
}
}
Currently im using Include in the Linq to get the related entities but i need all related entities without using Include.
This is because references are not loaded by default in EF Core.
when you want them, You have to force Include.
_context.Listings.Include(m=>m.Organization)
You can repeat this for any other field that you want to load.