Collection Field Map

Asky support reusage of IAskyFieldMap<T> definition

Parent.cs

public class Parent
{
    public Guid Id { get; set; }
    public string Name { get; set; }
    public Child[] Childs { get; set; }
}

Child.cs

public class Child
{
    public Guid Id { get; set; }
    public string Name { get; set; }
}

"ParentFieldMap.cs

public class ParentFieldMap : IAskyFieldMap<Parent>
{
    public Expression<Func<Parent, object>> this[string fieldId] => fieldId switch
    {
        "name" => x => x.Name,
        // Define collection
        "child" => x => x.Childs,
        // Use .Select() to defined collection fields
        "child.name" => x => x.Childs.Select(c => c.Name),
        _ => null,
    };
}

ParentRepository.cs

public class ParentRepository
{
    private readonly IAskyFieldMap<Parent> _parentFieldMap;

    // ...

    public async Task<Parent[]> GetAllParentsWithChildJimAsync()
    {
        var filterRule = FilterRule.Any(
            "child",
            FilterRule.Eq("child.name", "Jim"));

        // ...
    }
}