prs/prs.classes/Entities/Employee/EmployeeForm.cs

using InABox.Core;
using System;

namespace Comal.Classes
{
    public class EmployeeForm : EntityForm<Employee, EmployeeLink, EmployeeForm>, IDigitalForm<Employee>
    {
        public override string AutoIncrementPrefix() => "EF";
    }

    public class EmployeeFormLookups : ILookupDefinition<DigitalForm, EmployeeForm>, ILookupDefinition<DigitalForm, Employee>
    {
        public Filter<DigitalForm> DefineFilter(EmployeeForm[] items)
        {
            return new Filter<DigitalForm>(x => x.Active).IsEqualTo(true).And(x => x.AppliesTo).IsEqualTo("Employee");
        }

        Columns<EmployeeForm> ILookupDefinition<DigitalForm, EmployeeForm>.DefineFilterColumns()
            => new Columns<EmployeeForm>();

        public Filter<DigitalForm> DefineFilter(Employee[] items)
        {
            var filter = DefineFilter(Array.Empty<EmployeeForm>());

            foreach (var employee in items)
            {
                filter.And(x => x.ID).InQuery(
                    new Filter<EmployeeDigitalForm>(x => x.Employee.ID).IsEqualTo(employee.ID),
                    x => x.Form.ID);
            }

            return filter;
        }

        Columns<Employee> ILookupDefinition<DigitalForm, Employee>.DefineFilterColumns()
            => new Columns<Employee>(x => x.ID);
    }
}