EF Core 2.0 - Filtering data by user best practice

Question

There seem to be many ways to achieve this, but im trying to figure out what the best practice would be with .net Core 2 / EF core 2.0.

I have objects such as

public class Company {
    public Guid CompanyID {get; set;}
    public ICollection<Order> Orders {get; set;}
    ...
    public ICollection<UserLocation> UserLocations { get; set; }
}

public class Order {
    public Guid CompanyID { get; set; }
    public Company Company { get; set; }
    public DateTime OrderDate {get; set;}
}

public class UserLocation {
    public Guid CompanyID { get; set; }
    public Company Company { get; set; }

    public String UserId { get; set; }
    public ApplicationUser ApplicationUser { get; set; }
}

For my company Index page I only want companies that the user has access to to be displayed. Could a global filter be used for this or does that not work for this situation?

Thank you

Answer 1

It depends, if the user should not have access to the companies a global filter is a good solution. When the requirement only applies to the index page, you can best make a specific query for the index page.