public PagedList <Photographer> GetPhotographers(PhotographersResourceParameters photographersResourceParameters)
{
var collectionBeforePaging =
_context.Photographers.ApplySort(photographersResourceParameters.OrderBy,
_propertyMappingService.GetPropertyMapping <PhotographerDto, Photographer> ());
if (!string.IsNullOrEmpty(photographersResourceParameters.Genre))
{
var genreForWhereClause = photographersResourceParameters.Genre
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(a => a.Genre.ToLowerInvariant() == genreForWhereClause);
}
if (!string.IsNullOrEmpty(photographersResourceParameters.SearchQuery))
{
var searchQueryForWhereClause = photographersResourceParameters.SearchQuery
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(a => a.Genre.ToLowerInvariant().Contains(searchQueryForWhereClause) ||
a.FirstName.ToLowerInvariant().Contains(searchQueryForWhereClause) ||
a.LastName.ToLowerInvariant().Contains(searchQueryForWhereClause));
}
return(PagedList <Photographer> .Create(collectionBeforePaging,
photographersResourceParameters.PageNumber,
photographersResourceParameters.PageSize));
}
private string CreatePhotographersResourceUri(
PhotographersResourceParameters photographersResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(_urlHelper.Link("GetPhotographers",
new
{
orderBy = photographersResourceParameters.OrderBy,
searchQuery = photographersResourceParameters.SearchQuery,
genre = photographersResourceParameters.Genre,
pageNumber = photographersResourceParameters.PageNumber - 1,
pageSize = photographersResourceParameters.PageSize
}));
case ResourceUriType.NextPage:
return(_urlHelper.Link("GetPhotographers",
new
{
orderBy = photographersResourceParameters.OrderBy,
searchQuery = photographersResourceParameters.SearchQuery,
genre = photographersResourceParameters.Genre,
pageNumber = photographersResourceParameters.PageNumber + 1,
pageSize = photographersResourceParameters.PageSize
}));
case ResourceUriType.Current:
default:
return(_urlHelper.Link("GetPhotographers",
new
{
orderBy = photographersResourceParameters.OrderBy,
searchQuery = photographersResourceParameters.SearchQuery,
genre = photographersResourceParameters.Genre,
pageNumber = photographersResourceParameters.PageNumber,
pageSize = photographersResourceParameters.PageSize
}));
}
}
public IActionResult GetPhotographers(PhotographersResourceParameters photographersResourceParameters)
{
if (!_propertyMappingService.ValidMappingExistsFor <PhotographerDto, Photographer>
(photographersResourceParameters.OrderBy))
{
return(BadRequest());
}
var photographersFromRepo = _magnumPhotosRepository.GetPhotographers(photographersResourceParameters);
var previousPageLink = photographersFromRepo.HasPrevious ?
CreatePhotographersResourceUri(photographersResourceParameters,
ResourceUriType.PreviousPage) : null;
var nextPageLink = photographersFromRepo.HasNext ?
CreatePhotographersResourceUri(photographersResourceParameters,
ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
totalCount = photographersFromRepo.TotalCount,
pageSize = photographersFromRepo.PageSize,
currentPage = photographersFromRepo.CurrentPage,
totalPages = photographersFromRepo.TotalPages,
previousPageLink = previousPageLink,
nextPageLink = nextPageLink
};
Response.Headers.Add("X-Pagination",
Newtonsoft.Json.JsonConvert.SerializeObject(paginationMetadata));
var photographers = Mapper.Map <IEnumerable <PhotographerDto> > (photographersFromRepo);
var wrapper = new LinkedCollectionResourceWrapper <PhotographerDto> (photographers);
return(Ok(CreateLinksForPhotographers(wrapper)));
}
