public async Task <PagedList <Menus> > GetMenusAsync(DtoMenuParameter parameter)
{
var queryExpression = _context.Set <Menus>() as IQueryable <Menus>;
if (!string.IsNullOrWhiteSpace(parameter.Name))
{
queryExpression = queryExpression.Where(c => c.Name.Contains(parameter.Name));
}
queryExpression = queryExpression.Where(c => c.Position == (int)parameter.Position);
var mappingDictionary = _propertyMappingService.GetPropertyMapping <MenuDto, Menus>();
queryExpression = queryExpression.ApplySort(parameter.OrderBy, mappingDictionary);
return(await PagedList <Menus> .CreateAsync(queryExpression, parameter.PageNumber, parameter.PageSize));
}
public async Task <IActionResult> GetMenus([FromQuery] DtoMenuParameter parameter)
{
if (!_propertyCheckerService.TypeHasProperties <MenuDto>(parameter.Fields))
{
return(BadRequest());
}
if (!_propertyMappingService.ValidMappingExistsFor <MenuDto, Menus>(parameter.OrderBy))
{
return(BadRequest());
}
var menus = await _menuRepository.GetMenusAsync(parameter);
var paginationMetadata = new
{
totalCount = menus.TotalCount,
pageSize = menus.PageSize,
currentPage = menus.CurrentPage,
totalPages = menus.TotalPages,
};
Response.Headers.Add("X-Pagination", JsonSerializer.Serialize(paginationMetadata, new JsonSerializerOptions
{
Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
}));
var menuDtos = _mapper.Map <IList <MenuDto> >(menus);
var menuGenerates = menuDtos.GenerateTree(c => c.Id, u => u.ParentId);
var shapedData = menuGenerates.shapeData(parameter.Fields);
var links = CreateLinksForMenus(parameter, menus.HasPrevious, menus.HasNext);
//var shapedMenusWithLinks = shapedData.Select(c =>
//{
// var menuDict = c as IDictionary<string, object>;
// var menusLinks = CreateLinksForMenus((int)menuDict["Id"], null);
// menuDict.Add("links", menusLinks);
// return menuDict;
//});
var linkedCollectionResource = new
{
value = shapedData,
links
};
return(Ok(linkedCollectionResource));
}
private string CreateUsersResourceUri(DtoMenuParameter parameters,
ResourceUriType type)
{
switch (type)
{
case ResourceUriType.PreviousPage:
return(Url.Link(nameof(GetMenus), new
{
fields = parameters.Fields,
pageNumber = parameters.PageNumber - 1,
pageSize = parameters.PageSize,
name = parameters.Name,
position = parameters.Position,
orderBy = parameters.OrderBy
}));
case ResourceUriType.NextPage:
return(Url.Link(nameof(GetMenus), new
{
fields = parameters.Fields,
pageNumber = parameters.PageNumber + 1,
pageSize = parameters.PageSize,
name = parameters.Name,
position = parameters.Position,
orderBy = parameters.OrderBy
}));
case ResourceUriType.CurrentPage:
default:
return(Url.Link(nameof(GetMenus), new
{
fields = parameters.Fields,
pageNumber = parameters.PageNumber,
pageSize = parameters.PageSize,
name = parameters.Name,
position = parameters.Position,
orderBy = parameters.OrderBy
}));
}
}
private IEnumerable <LinkDto> CreateLinksForMenus(DtoMenuParameter parameters, bool hasPrevious, bool hasNext)
{
var links = new List <LinkDto>();
links.Add(new LinkDto(CreateUsersResourceUri(parameters, ResourceUriType.CurrentPage),
"self", "GET"));
if (hasPrevious)
{
links.Add(new LinkDto(CreateUsersResourceUri(parameters, ResourceUriType.PreviousPage),
"previous_page", "GET"));
}
if (hasNext)
{
links.Add(new LinkDto(CreateUsersResourceUri(parameters, ResourceUriType.NextPage),
"next_page", "GET"));
}
return(links);
}
