public PagedList <Track> GetAllPagination(TrackResourceParameters resourceParams)
{
var collectionBeforPaging = _context.Tracks
.Include(a => a.Artists)
.AsQueryable();
//filter by name if exists
if (!string.IsNullOrEmpty(resourceParams.Name))
{
collectionBeforPaging = collectionBeforPaging
.Where(t => t.Name == resourceParams.Name);
}
//searh if exists
if (!string.IsNullOrEmpty(resourceParams.SearchQuery))
{
collectionBeforPaging = collectionBeforPaging
.Where(a => a.Name.Contains(resourceParams.SearchQuery));
}
return(PagedList <Track> .Create(collectionBeforPaging, resourceParams.PageNumber, resourceParams.PageSize));
}
public async Task <IActionResult> Get([FromQuery] TrackResourceParameters resourceParameters)
{
//Also must modify paginationAsync name since it is not async
var tracks = _trackRepo.GetAllPagination(resourceParameters);
var mappedTracks = _mapper.Map <IEnumerable <TrackDto> >(tracks);
//constructing links to previous and next pages
var previousPage = tracks.HasPrevious ?
_linkService.CreateResourceUri(resourceParameters, ResourceType.PreviousPage) : null;
var nextPage = tracks.HasNext ?
_linkService.CreateResourceUri(resourceParameters, ResourceType.NextPage) : null;
mappedTracks = mappedTracks.Select(track =>
{
track = _linkService.CreateLinks(track);
return(track);
});
var paginationMetadata = new
{
totalCount = tracks.TotalCount,
pageSize = tracks.PageSize,
currentPage = tracks.CurrentPage,
totalPages = tracks.TotalPages,
previousPageLink = previousPage,
nextPageLink = nextPage
};
return(Ok(new
{
Values = mappedTracks,
Links = paginationMetadata
}));
}
