private string CreateTagsResourceUri(TagsResourceParameters parameters, ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link("GetTags",
new
{
pageNumber = parameters.PageNumber - 1,
pageSize = parameters.PageSize
}
));
case ResourceUriType.NextPage:
return(Url.Link("GetTags",
new
{
pageNumber = parameters.PageNumber + 1,
pageSize = parameters.PageSize
}
));
default:
return(Url.Link("GetTags",
new
{
pageNumber = parameters.PageNumber,
pageSize = parameters.PageSize
}
));
}
}
public async Task <PageList <Tag> > GetAll(TagsResourceParameters parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
var model = await _context.Tags.Include(c => c.Products).ThenInclude(c => c.Product).ToListAsync();
var data = _mapper.Map <List <TagEntity>, List <Tag> >(model).AsQueryable();
return(PageList <Tag> .Create(data, parameters.PageNumber, parameters.PageSize));
}
public async Task <IActionResult> onGet([FromQuery] TagsResourceParameters parameters)
{
var data = await _tagsService.GetAll(parameters);
var previousLink = data.HasPrevious ? CreateTagsResourceUri(parameters, ResourceUriType.PreviousPage) : null;
var nextLink = data.HasNext ? CreateTagsResourceUri(parameters, ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
totalCount = data.TotalCount,
pageSize = data.PageSize,
currentPage = data.CurrentPage,
totalPages = data.TotalPages,
previousLink,
nextLink
};
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(paginationMetadata));
return(Ok(data));
}
