EF 6 Core 前缀基于多对一关系中实体的属性

Question

I have two related entities:

[Index(nameof(Name), IsUnique = true)]
public class ApiResource : Entity<int>
{
    public string Name { get; set; }
    public ICollection<ApiScope> ApiScopes { get; set; }
}

and related entity:

[Index(nameof(Name), IsUnique = true)]
public class ApiScope : Entity<int>
{
    public string Name { get; set; }
    public ICollection<Client> Clients { get; set; }
    public ApiResource ApiResource { get; set; }
}

and I want to add prefix for ApiScope.Name based on ApiResource.Name. For example, if ApiResource.Name = "niceAPI", then for example ApiScope.Name = "niceAPI:test.read". Is this possible to do without manually adding prefix when creating ApiResource and ApiScope? If yes, how?

Answer 1

I think you can modify your setter of ApiScope.Name . Something like

private string _name;
public string Name
{
    get => _name;
    set
    {
        string prefix = ApiResource.Name + ":";
        if (value.StartsWith(prefix))
            _name = value;
        else
            _name = prefix + value;
    }
}

But you should ensure ApiResource is set in advance.