//[HttpHead]
public ActionResult <IEnumerable <AuthorDto> > GetAuthors([FromQuery] AuthorFilters authorFilters)
{
try
{
var authorFromRepo = _courseLibraryRepository.GetAuthors(authorFilters);
var previousPageLink = authorFromRepo.HasPrevious ?
CreateAuthorResourceUri(authorFilters, ResourceUriType.PreviousPage) : null;
var nextPageLink = authorFromRepo.HasPrevious ?
CreateAuthorResourceUri(authorFilters, ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
totalCount = authorFromRepo.TotalCount,
pageSize = authorFilters.PageSize,
currentPage = authorFromRepo.CurrentPage,
totalPages = authorFromRepo.TotalPages,
previousPageLink,
nextPageLink
};
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(paginationMetadata));
return(Ok(_mapper.Map <IEnumerable <AuthorDto> >(authorFromRepo)));
}
catch (Exception ex)
{
_logger.LogError(ex, $"{ex.Message}");
return(StatusCode(500, "Internal server error, try again later."));
}
}
public PagedList <Author> GetAuthors(AuthorFilters authorFilters)
{
var collection = _context.Authors as IQueryable <Author>;
if (authorFilters == null)
{
throw new ArgumentNullException(nameof(authorFilters));
}
if (!string.IsNullOrWhiteSpace(authorFilters.MainCategory))
{
authorFilters.MainCategory = authorFilters.MainCategory.Trim();
collection = collection.Where(m => m.MainCategory.Contains(authorFilters.MainCategory));
}
if (!string.IsNullOrWhiteSpace(authorFilters.SearchQuery))
{
authorFilters.SearchQuery = authorFilters.SearchQuery.Trim();
collection = collection.Where(a => a.MainCategory.Contains(authorFilters.SearchQuery) ||
a.FirstName.Contains(authorFilters.SearchQuery) ||
a.LastName.Contains(authorFilters.SearchQuery));
}
if (!string.IsNullOrEmpty(authorFilters.OrderBy))
{
var authorPropertyMappingDictionary = _propertyMappingService.GetPropertyMapping <AuthorDto, Author>();
collection = collection.ApplySort(authorFilters.OrderBy, authorPropertyMappingDictionary);
}
return(PagedList <Author> .Create(collection, authorFilters.PageNumber, authorFilters.PageSize));
}
public string CreateAuthorResourceUri(AuthorFilters authorsResourceParameters, ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetAuthors", new
{
pageNumber = authorsResourceParameters.PageNumber - 1,
pageSize = authorsResourceParameters.PageSize,
mainCategory = authorsResourceParameters.MainCategory,
searchQuery = authorsResourceParameters.SearchQuery
}));
case ResourceUriType.NextPage:
return(Url.Link("GetAuthors", new
{
pageNumber = authorsResourceParameters.PageNumber - 1,
pageSize = authorsResourceParameters.PageSize,
mainCategory = authorsResourceParameters.MainCategory,
searchQuery = authorsResourceParameters.SearchQuery
}));
case ResourceUriType.Current:
default:
return(Url.Link("GetAuthors", new
{
pageNumber = authorsResourceParameters.PageNumber - 1,
pageSize = authorsResourceParameters.PageSize,
mainCategory = authorsResourceParameters.MainCategory,
searchQuery = authorsResourceParameters.SearchQuery
}));
}
}
