Simplify `VacancyUpdateModel`

[allanwalpy]

It is now:

public class VacancyUpdateModel
{
    [ValidUpdateField(typeof(ValidVacancyTitleAttribute))]
    public UpdateCommandModel<string> Title { get; set; }

    [ValidUpdateField(typeof(ValidVacancyDescriptionAttribute))]
    public UpdateCommandModel<string> Description { get; set; }

    [ValidUpdateField(typeof(ValidEmploymentTypeListAttribute))]
    public UpdateCommandModel<List<string>> EmploymentType { get; set; }

    [ValidUpdateField(typeof(ValidSalaryAttribute))]
    public UpdateCommandModel<decimal?> Salary { get; set; }

    public UpdateCommandModel<Person> ContactPerson { get; set; }

    [ValidUpdateField(typeof(ValidPhoneNumberAttribute))]
    public UpdateCommandModel<string> ContactPhone { get; set; }
}

suggestion: if there is no field with such name or it is null (questionable) - do not set it;

• bug: fields can't be set to null;

• workaround: set separate api to reset fields (not advisable);

  [AnyNotNull(
  nameof(Title),
  nameof(Description),
  nameof(EmploymentType),
  nameof(Salary),
  nameof(ContactPerson),
  nameof(ContactPhone))]
  public class VacancyUpdateModel
  {
  
  [ValidVacancyTitle]
  public string Title { get; set; }
  
  [ValidVacancyDescription]
  public string Description { get; set; }
  
  [ValidEmploymentTypeList]
  public List<string> EmploymentType { get; set; }
  
  [ValidVacancySalary]
  public decimal? Salary { get; set; }
  
  public Person ContactPerson { get; set; }
  
  [ValidPhoneNumber]
  public string ContactPhone { get; set; }
  }

[allanwalpy]

nah