public async Task <ActionResult> GetInstitutions([FromQuery] InstitutionResourceParameters pagedResourceParameters, CancellationToken ct)
{
var institutionDtos = await _institutionService.GetInstitutionsAsync(pagedResourceParameters, ct);
var previousPageLink = institutionDtos.HasPrevious ? CreateInstitutionsResourceUri(pagedResourceParameters, Enums.ResourceUriType.PreviousPage) : null;
var nextPageLink = institutionDtos.HasNext ? CreateInstitutionsResourceUri(pagedResourceParameters, Enums.ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
totalCount = institutionDtos.TotalCount,
pageSize = institutionDtos.PageSize,
currentPage = institutionDtos.CurrentPage,
totalPages = institutionDtos.TotalPages,
previousPageLink,
nextPageLink
};
if (institutionDtos == null)
{
return(NotFound());
}
Response.Headers.Add("X-Pagination", JsonConvert.SerializeObject(paginationMetadata));
return(Ok(institutionDtos));
}
public async Task <PagedList <InstitutionDto> > GetInstitutionsAsync(InstitutionResourceParameters resourceParameters, CancellationToken ct)
{
var institutionEntities = _uow.Institutions.GetAll();
/*if (!string.IsNullOrEmpty(resourceParameters.Name))
* {
* if (Enum.TryParse(resourceParameters.Name, true, out University name))
* {
* institutionEntities = institutionEntities.Where(a => a.Name == name);
* }
* }*/
if (!string.IsNullOrEmpty(resourceParameters.SearchQuery))
{
var searchQueryForWhereClause = resourceParameters.SearchQuery.Trim().ToLowerInvariant();
institutionEntities = institutionEntities
.Where(a => a.Name.ToLowerInvariant().Contains(searchQueryForWhereClause)
);
}
var pagedListEntities = await PagedList <Institution> .CreateAsync(institutionEntities,
resourceParameters.PageNumber, resourceParameters.PageSize, ct);
var result = _mapper.Map <PagedList <InstitutionDto> >(pagedListEntities);
result.TotalCount = pagedListEntities.TotalCount;
result.TotalPages = pagedListEntities.TotalPages;
result.CurrentPage = pagedListEntities.CurrentPage;
result.PageSize = pagedListEntities.PageSize;
return(result);
}
private string CreateInstitutionsResourceUri(InstitutionResourceParameters pagedResourceParameters, Enums.ResourceUriType type)
{
switch (type)
{
case Enums.ResourceUriType.PreviousPage:
return(_linkGenerator.GetUriByName(this.HttpContext, "GetInstitutions",
new
{
name = pagedResourceParameters.Name,
code = pagedResourceParameters.Code,
searchQuery = pagedResourceParameters.SearchQuery,
pageNumber = pagedResourceParameters.PageNumber - 1,
pageSize = pagedResourceParameters.PageSize
})); // TODO get the aboslute path
case Enums.ResourceUriType.NextPage:
return(_linkGenerator.GetUriByName(this.HttpContext, "GetInstitutions",
new
{
name = pagedResourceParameters.Name,
code = pagedResourceParameters.Code,
searchQuery = pagedResourceParameters.SearchQuery,
pageNumber = pagedResourceParameters.PageNumber + 1,
pageSize = pagedResourceParameters.PageSize
}));
default:
return(_linkGenerator.GetUriByName(this.HttpContext, "GetInstitutions",
new
{
name = pagedResourceParameters.Name,
code = pagedResourceParameters.Code,
searchQuery = pagedResourceParameters.SearchQuery,
pageNumber = pagedResourceParameters.PageNumber,
pageSize = pagedResourceParameters.PageSize
}));
}
}
