public ActionResult <IEnumerable <ShoppingListItemDto> > GetCategories([FromQuery] ShoppingListItemParametersDto ShoppingListItemParametersDto)
{
var ShoppingListItemsFromRepo = _ShoppingListItemRepository.GetShoppingListItems(ShoppingListItemParametersDto);
var previousPageLink = ShoppingListItemsFromRepo.HasPrevious
? CreateShoppingListItemsResourceUri(ShoppingListItemParametersDto,
ResourceUriType.PreviousPage)
: null;
var nextPageLink = ShoppingListItemsFromRepo.HasNext
? CreateShoppingListItemsResourceUri(ShoppingListItemParametersDto,
ResourceUriType.NextPage)
: null;
var paginationMetadata = new
{
totalCount = ShoppingListItemsFromRepo.TotalCount,
pageSize = ShoppingListItemsFromRepo.PageSize,
pageNumber = ShoppingListItemsFromRepo.PageNumber,
totalPages = ShoppingListItemsFromRepo.TotalPages,
hasPrevious = ShoppingListItemsFromRepo.HasPrevious,
hasNext = ShoppingListItemsFromRepo.HasNext,
previousPageLink,
nextPageLink
};
Response.Headers.Add("X-Pagination",
JsonSerializer.Serialize(paginationMetadata));
var ShoppingListItemsDto = _mapper.Map <IEnumerable <ShoppingListItemDto> >(ShoppingListItemsFromRepo);
return(Ok(ShoppingListItemsDto));
}
public PagedList <ShoppingListItem> GetShoppingListItems(ShoppingListItemParametersDto ShoppingListItemParameters)
{
if (ShoppingListItemParameters == null)
{
throw new ArgumentNullException(nameof(ShoppingListItemParameters));
}
var collection = _context.ShoppingListItems as IQueryable <ShoppingListItem>;
if (!string.IsNullOrWhiteSpace(ShoppingListItemParameters.QueryString))
{
var QueryString = ShoppingListItemParameters.QueryString.Trim();
collection = collection.Where(i => i.Name.Contains(QueryString) ||
i.Category.Contains(QueryString));
}
var sieveModel = new SieveModel
{
Sorts = ShoppingListItemParameters.SortOrder,
Filters = ShoppingListItemParameters.Filters
};
collection = _sieveProcessor.Apply(sieveModel, collection);
return(PagedList <ShoppingListItem> .Create(collection,
ShoppingListItemParameters.PageNumber,
ShoppingListItemParameters.PageSize));
}
private string CreateShoppingListItemsResourceUri(
ShoppingListItemParametersDto ShoppingListItemParametersDto,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetShoppingListItems",
new
{
filters = ShoppingListItemParametersDto.Filters,
orderBy = ShoppingListItemParametersDto.SortOrder,
pageNumber = ShoppingListItemParametersDto.PageNumber - 1,
pageSize = ShoppingListItemParametersDto.PageSize,
searchQuery = ShoppingListItemParametersDto.QueryString
}));
case ResourceUriType.NextPage:
return(Url.Link("GetShoppingListItems",
new
{
filters = ShoppingListItemParametersDto.Filters,
orderBy = ShoppingListItemParametersDto.SortOrder,
pageNumber = ShoppingListItemParametersDto.PageNumber + 1,
pageSize = ShoppingListItemParametersDto.PageSize,
searchQuery = ShoppingListItemParametersDto.QueryString
}));
default:
return(Url.Link("GetShoppingListItems",
new
{
filters = ShoppingListItemParametersDto.Filters,
orderBy = ShoppingListItemParametersDto.SortOrder,
pageNumber = ShoppingListItemParametersDto.PageNumber,
pageSize = ShoppingListItemParametersDto.PageSize,
searchQuery = ShoppingListItemParametersDto.QueryString
}));
}
}
