public async Task <IActionResult> GetUser([FromRoute] long?id, [FromQuery] string fields, [FromHeader(Name = "Accept")] string mediaType)
{
var request = new UserQueryRequest()
{
Id = id,
Fields = fields
};
var includeLinks = LinkerFactory.IncludeLinks(mediaType);
//查询业务员
var queryResponse = await _mediator.Send(request);
if (queryResponse.Status != HttpStatusCode.OK)
{
return(Problem(queryResponse.Message, nameof(GetUser), (int)queryResponse.Status, "Request occur error"));
}
IEnumerable <RelativeLink> relativeLinks = new List <RelativeLink>();
var shapedItemsWithLinks = queryResponse.ShapedData.FirstOrDefault() as IDictionary <string, object>;
if (shapedItemsWithLinks == null)
{
return(Ok("empty result"));
}
if (includeLinks)
{
var linkerFactory = new LinkerFactory(Url);
relativeLinks = linkerFactory.CreateLinksForItem(request.Id.Value, fields, GetCurrentControllerItemLinker());
shapedItemsWithLinks.Add("links", relativeLinks);
}
return(Ok(shapedItemsWithLinks));
}
public async Task <IActionResult> PagedUsers([FromQuery] UserPagedCollectionQueryRequest request, [FromHeader(Name = "Accept")] string accept)
{
var includeLinks = LinkerFactory.IncludeLinks(accept);
if (int.TryParse(_config["MaxPageSize"], out var maxPageSize))
{
request.MaxPageSize = maxPageSize;
}
//查询业务员，进行查询得到结果
var queryResponse = await _mediator.Send(request);
//查询出错
if (queryResponse.Status != HttpStatusCode.OK)
{
return(Problem(queryResponse.Message, nameof(PagedUsers),
(int)queryResponse.Status,
"Request occur error"));
}
//写Header
Response.Headers.Add("X-Pagination", queryResponse.MoreInfo);
//Hateaos：创建自驱动链接
if (includeLinks)
{
var linkerFactory = new LinkerFactory(Url);
var links = linkerFactory.CreateLinksForCollections(request, nameof(PagedUsers), request.HasPreviousPage, request.HasNextPage);
var shapedDatasWithLinks = queryResponse.ShapedData.Select(items =>
{
var dict = items as IDictionary <string, object>;
var itemLinks = linkerFactory.CreateLinksForItem((long)dict["Id"], null, GetCurrentControllerItemLinker());
dict.Add("links", itemLinks);
return(dict);
});
var createLink = linkerFactory.CreatePostItemLink(nameof(CreateUser));
var linkedCollectionResource = new
{
value = shapedDatasWithLinks,
page_navigator = links,
create_new_entity = createLink
};
return(Ok(linkedCollectionResource));
}
return(Ok(queryResponse.ShapedData));
}
public async Task <IActionResult> GetUsers([FromQuery] UserCollectionQueryRequest request, [FromHeader(Name = "Accept")] string mediaType)
{
var includeLinks = LinkerFactory.IncludeLinks(mediaType);
//查询业务员
var queryResponse = await _mediator.Send(request);
if (queryResponse.Status != HttpStatusCode.OK)
{
return(Problem(queryResponse.Message, nameof(GetUsers), (int)queryResponse.Status, "Request occur error"));
}
//Hateaos：创建自驱动链接
IEnumerable <IDictionary <string, object> > shapedItemsWithLinks = null;
if (includeLinks) //如果返回参数需要包含links
{
var linkerFactory = new LinkerFactory(Url);
shapedItemsWithLinks = queryResponse.ShapedData.Select(item =>
{
var dict = item as IDictionary <string, object>;
var itemLinks = linkerFactory.CreateLinksForItem((long)dict["Id"], null, GetCurrentControllerItemLinker());
dict.Add("links", itemLinks);
return(dict);
});
var createLink = linkerFactory.CreatePostItemLink(nameof(CreateUser));
var linkedCollectionResource = new
{
value = shapedItemsWithLinks,
create_new_entity = createLink
};
return(Ok(linkedCollectionResource));
}
shapedItemsWithLinks = queryResponse.ShapedData.Select(opr =>
{
var oprDict = opr as IDictionary <string, object>;
return(oprDict);
});
return(Ok(shapedItemsWithLinks));
}