I have the SQL Products table migrated from MongoDb and I use ASP Core + MediatR. The filtering data comes from frontend Autocompletes where user can select multiple values (3 different ProductGroups + 2 different Suppliers for example). Wanted to ask is my implementation optimal, or did I miss something? Below the code for action:

    [HttpPut("[action]")]
    public async Task<IQueryable<ArticleDto>> Put([FromBody] ArticleQueryAll query)
    {
        var response = await _mediator.Send(query);
        return response;
    }

And below the code for MediatR model and Handler:

 public class ProductsQueryAll : IRequest<IQueryable<ArticleDto>>
    {
        public string[] ProductGroups { get; set; }
        public int[] SupplierIds { get; set; }
        public string[] Categories { get; set; }
    }

    public class ProductsQueryAllHandler : IRequestHandler<ProductsQueryAll, IQueryable<ArticleDto>>
    {
        private readonly DbContext _dbContext;
        private readonly IMapper _mapper;

        public ProductsQueryAllHandler(DbContext dbContext, IMapper mapper)
        {
            _dbContext = dbContext;
            _mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
        }

        public Task<IQueryable<ArticleDto>> Handle(ProductsQueryAll request, CancellationToken cancellationToken)
        {
            var predicate = PredicateBuilder.True<ArticleDm>();
            if (request.ProductGroups?.Length > 0)
            {
                predicate = predicate.And(x => request.ProductGroups.Any(y => y == x.ProductGroup));
            }
            if (request.SupplierIds?.Length > 0)
            {
                predicate = predicate.And(x => request.SupplierIds.Any(y => y == x.SupplierId));
            }
            if (request.Categories?.Length > 0)
            {
                predicate = predicate.And(x => request.Categories.Any( y => y == x.Category));
            }


            var entityList = _dbContext.Articles
                .AsNoTracking()
                .Where(predicate);

            return Task.FromResult(_mapper.ProjectTo<ArticleDto>(entityList));
        }
    }