private string CreateQuestionsResourceUri(
QuestionsResourceParameters questionsResourceParameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(_urlHelper.Link("GetAllQuestions",
new
{
searchQuery = questionsResourceParameters.SearchQuery,
pageNumber = questionsResourceParameters.PageNumber - 1,
pageSize = questionsResourceParameters.PageSize
}));
case ResourceUriType.NextPage:
return(_urlHelper.Link("GetAllQuestions",
new
{
searchQuery = questionsResourceParameters.SearchQuery,
pageNumber = questionsResourceParameters.PageNumber + 1,
pageSize = questionsResourceParameters.PageSize
}));
default:
return(_urlHelper.Link("GetAllQuestions",
new
{
searchQuery = questionsResourceParameters.SearchQuery,
pageNumber = questionsResourceParameters.PageNumber,
pageSize = questionsResourceParameters.PageSize
}));
}
}
public IActionResult GetQuestions(QuestionsResourceParameters questionsResourceParameters)
{
var questionsFromRepo = _quizRepository.GetQuestions(questionsResourceParameters);
var previousPageLink = questionsFromRepo.HasPrevious ?
CreateQuestionsResourceUri(questionsResourceParameters,
ResourceUriType.PreviousPage) : null;
var nextPageLink = questionsFromRepo.HasNext ?
CreateQuestionsResourceUri(questionsResourceParameters,
ResourceUriType.NextPage) : null;
var paginationMetadata = new
{
totalCount = questionsFromRepo.TotalCount,
pageSize = questionsFromRepo.PageSize,
currentPage = questionsFromRepo.CurrentPage,
totalPages = questionsFromRepo.TotalPages,
previousPageLink = previousPageLink,
nextPageLink = nextPageLink
};
Response.Headers.Add("X-Pagination",
Newtonsoft.Json.JsonConvert.SerializeObject(paginationMetadata));
var questions = Mapper.Map <IEnumerable <QuestionDto> >(questionsFromRepo);
return(Ok(questions));
}
public PagedList <Question> GetQuestions(QuestionsResourceParameters questionsResourceParameters)
{
var collectionBeforePaging =
_context.Questions.AsQueryable();
if (!string.IsNullOrEmpty(questionsResourceParameters.SearchQuery))
{
var searchQueryForWhereClause = questionsResourceParameters.SearchQuery
.Trim().ToLowerInvariant();
collectionBeforePaging = collectionBeforePaging
.Where(a => a.QuestionText.ToLowerInvariant().Contains(searchQueryForWhereClause));
}
return(PagedList <Question> .Create(collectionBeforePaging,
questionsResourceParameters.PageNumber,
questionsResourceParameters.PageSize));
}
