public async Task <IActionResult> GetPagedOutboundLists([FromQuery] OutboundListDtoParameters parameters)
{
var outboundLists = await _outboundListRepository.GetPagedOutboundListsAsync(parameters);
var previousPageLink = outboundLists.HasPrevious
? CreateOutboundListResourceUri(parameters, ResourceUnType.PreviousPage)
: null;
var nextPageLink = outboundLists.HasNext
? CreateOutboundListResourceUri(parameters, ResourceUnType.NextPage)
: null;
var paginationMetdata = new
{
totalCount = outboundLists.TotalCount,
pageSize = outboundLists.PageSize,
currentPage = outboundLists.CurrentPage,
totalPage = outboundLists.TotalPages,
previousPageLink,
nextPageLink
};
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(
paginationMetdata, new JsonSerializerOptions
{
Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
}));
var outboundListDto = _mapper.Map <IEnumerable <OutboundListDto> >(outboundLists);
return(Ok(outboundListDto));
}
//[HttpDelete("outboundListId",Name = nameof(DeleteOutboundList))]
//public async Task<IActionResult> DeleteOutboundList(Guid outboundListId)
//{
// var entity = await _outboundListRepository.GetOutboundListAsync(outboundListId);
// if(entity == null)
// {
// return NotFound();
// }
// _outboundListRepository.DeleteOutboundList(entity);
// _outboundListRepository.SaveAsync();
// return NoContent();
//}
//[HttpOptions]
//public IActionResult GetOutboundListOptions()
//{
// Response.Headers.Add("Allow", "DELETE,GET,PATCH,PUT,OPTIONS");
// return Ok();
//}
//前后页码的uri也需要查询条件，因为是根据原本的查询条件做的分页
private string CreateOutboundListResourceUri(OutboundListDtoParameters parameters,
ResourceUnType type)
{
switch (type)
{
case ResourceUnType.PreviousPage: //上一页
return(Url.Link(
nameof(GetPagedOutboundLists),
new
{
pageNumber = parameters.PageNumber - 1,
pageSize = parameters.PageSize,
outboundListNum = parameters.OutboundListNum,
searchTerm = parameters.SearchTerm
}));
case ResourceUnType.NextPage: //下一页
return(Url.Link(
nameof(GetPagedOutboundLists),
new
{
pageNumber = parameters.PageNumber + 1,
pageSize = parameters.PageSize,
outboundListNum = parameters.OutboundListNum,
searchTerm = parameters.SearchTerm
}));
default: //当前页
return(Url.Link(
nameof(GetPagedOutboundLists),
new
{
pageNumber = parameters.PageNumber,
pageSize = parameters.PageSize,
outboundListNum = parameters.OutboundListNum,
searchTerm = parameters.SearchTerm
}));
}
}
public async Task <PagedList <OutboundList> > GetPagedOutboundListsAsync(OutboundListDtoParameters parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(nameof(parameters));
}
var querryExpression = _context.OutboundLists as IQueryable <OutboundList>;
//OutboundListDtoParameters中的OutboundListNum查询参数
if (!String.IsNullOrWhiteSpace(parameters.OutboundListNum))
{
parameters.OutboundListNum = parameters.OutboundListNum.Trim();
querryExpression = querryExpression.Where(x => x.OutboundNumber.Contains(parameters.OutboundListNum));
}
//OutboundListDtoParameters中的SearchTerm查询参数
if (!String.IsNullOrWhiteSpace(parameters.SearchTerm))
{
parameters.SearchTerm = parameters.SearchTerm.Trim();
querryExpression = querryExpression.Where(x =>
x.OutboundNumber.Contains(parameters.SearchTerm));
}
return(await PagedList <OutboundList> .CreateAsync(querryExpression, parameters.PageNumber, parameters.PageSize));
}
