private IEnumerable <LinkDto> CreateLinksForBusinesses(
CommonResourceParameters comResourceParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <LinkDto>();
// self
links.Add(
new LinkDto(CreateBusinessResourceUri(comResourceParameters,
ResourceUriType.Current),
"self", "GET"));
if (hasNext)
{
links.Add(
new LinkDto(CreateBusinessResourceUri(comResourceParameters,
ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new LinkDto(CreateBusinessResourceUri(comResourceParameters,
ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public PagedList <OwpiniEvent> GetOwpiniEvents(CommonResourceParameters commonResourceParameters)
{
var collectionBeforePaging =
_context.OwpiniEvents.ApplySort(commonResourceParameters.OrderBy);
if (!string.IsNullOrEmpty(commonResourceParameters.SearchQuery))
{
var searchQueryForWhereClause = commonResourceParameters.SearchQuery
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(b => b.Name.Contains(searchQueryForWhereClause));
}
return(PagedList <OwpiniEvent> .Create(collectionBeforePaging,
commonResourceParameters.PageNumber,
commonResourceParameters.PageSize));
}
public PagedList <Business> GetBusinesses(CommonResourceParameters commonResourceParameters)
{
var collectionBeforePaging =
_context.Businesses.ApplySort(commonResourceParameters.OrderBy, _propertyMappingService.GetPropertyMapping <BusinessDto, Business>());
if (!string.IsNullOrEmpty(commonResourceParameters.SearchQuery))
{
var searchQueryForWhereClause = commonResourceParameters.SearchQuery
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(b => b.Name.Contains(searchQueryForWhereClause));
}
return(PagedList <Business> .Create(collectionBeforePaging,
commonResourceParameters.PageNumber,
commonResourceParameters.PageSize));
}
private string CreateBusinessResourceUri(
CommonResourceParameters commonResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(_urlHelper.Link("GetBusinesses",
new
{
fields = commonResourceParameters.Fields,
orderBy = commonResourceParameters.OrderBy,
searchQuery = commonResourceParameters.SearchQuery,
pageNumber = commonResourceParameters.PageNumber - 1,
pageSize = commonResourceParameters.PageSize
}));
case ResourceUriType.NextPage:
return(_urlHelper.Link("GetBusinesses",
new
{
fields = commonResourceParameters.Fields,
orderBy = commonResourceParameters.OrderBy,
searchQuery = commonResourceParameters.SearchQuery,
pageNumber = commonResourceParameters.PageNumber + 1,
pageSize = commonResourceParameters.PageSize
}));
case ResourceUriType.Current:
default:
return(_urlHelper.Link("GetBusinesses",
new
{
fields = commonResourceParameters.Fields,
orderBy = commonResourceParameters.OrderBy,
searchQuery = commonResourceParameters.SearchQuery,
pageNumber = commonResourceParameters.PageNumber,
pageSize = commonResourceParameters.PageSize
}));
}
}
public IActionResult GetBusinesses(CommonResourceParameters comResourceParam,
[FromHeader(Name = "Accept")] string mediaType)
{
if (!_propertyMappingService.ValidMappingExistsFor <BusinessDto, Business>
(comResourceParam.OrderBy))
{
return(BadRequest());
}
if (!_typeHelperService.TypeHasProperties <BusinessDto>
(comResourceParam.Fields))
{
return(BadRequest());
}
var businessesFromRepo = _owpiniRepository.GetBusinesses(comResourceParam);
var businesses = Mapper.Map <IEnumerable <BusinessDto> >(businessesFromRepo);
if (mediaType == "application/vnd.owpini.hateoas+json")
{
var paginationMetaData = new
{
totalCount = businessesFromRepo.TotalCount,
pageSize = businessesFromRepo.PageSize,
currentPage = businessesFromRepo.CurrentPage,
totalPages = businessesFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
JsonConvert.SerializeObject(paginationMetaData));
var links = CreateLinksForBusinesses(comResourceParam,
businessesFromRepo.HasNext, businessesFromRepo.HasPrevious);
var shapedBusinesses = businesses.ShapeData(comResourceParam.Fields);
var shapedBusinessesWithLinks = shapedBusinesses.Select(biz =>
{
var bizAsDictionary = biz as IDictionary <string, object>;
var businessLinks = CreateLinksForBusiness(
(Guid)bizAsDictionary["Id"], comResourceParam.Fields);
bizAsDictionary.Add("links", businessLinks);
return(bizAsDictionary);
});
var linkedCollectionResource = new
{
value = shapedBusinessesWithLinks,
links = links
};
return(Ok(linkedCollectionResource));
}
var previousPageLink = businessesFromRepo.HasPrevious ?
CreateBusinessResourceUri(comResourceParam, ResourceUriType.PreviousPage) : null;
var nextPageLink = businessesFromRepo.HasNext ?
CreateBusinessResourceUri(comResourceParam, ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
previousPageLink = previousPageLink,
nextPageLink = nextPageLink,
totalCount = businessesFromRepo.TotalCount,
pageSize = businessesFromRepo.PageSize,
currentPage = businessesFromRepo.CurrentPage,
totalPages = businessesFromRepo.TotalPages
};
Response.Headers.Add("X-Pagination",
Newtonsoft.Json.JsonConvert.SerializeObject(paginationMetadata));
return(Ok(businesses.ShapeData(comResourceParam.Fields)));
}