/// <summary>
///
/// </summary>
public Chunk(IList <T> list, Pageable pageable)
{
this.list = list;
this.pageable = pageable;
}
/// <summary>
///
/// </summary>
public Task BindModelAsync(ModelBindingContext bindingContext)
{
if (bindingContext == null)
{
throw new ArgumentNullException(nameof(bindingContext));
}
var context = bindingContext.ActionContext.HttpContext;
ValueProviderResult result = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
try
{
if (typeof(Pageable).IsAssignableFrom(bindingContext.ModelType))
{
var bid = bindingContext.BindingSource?.Id.ToLower();
if (string.IsNullOrWhiteSpace(bid))
{
bid = context.Request.ContentType == "application/x-www-form-urlencoded" || context.Request.ContentType == "multipart/form-data" ? "form" : "body";
}
Pageable obj = new Pageable();
switch (bid)
{
case "body":
var body = context.Request.Body;
if (body != null)
{
var ms = new MemoryStream();
var reader = new StreamReader(ms);
body.CopyTo(ms);
obj = JsonConvert.DeserializeObject <Pageable>(reader.ReadToEnd());
ms.Seek(0, SeekOrigin.Begin);
context.Request.Body = ms;
}
break;
case "form":
case "query":
IEnumerable <KeyValuePair <string, StringValues> > query = bid == "form" ?
context.Request.Form as IEnumerable <KeyValuePair <string, StringValues> > :
context.Request.Query as IEnumerable <KeyValuePair <string, StringValues> >;
if (int.TryParse(query.FirstOrDefault(x => x.Key.ToLower() == "pageno").Value, out int pageNo))
{
obj.PageNo = pageNo;
}
if (int.TryParse(query.FirstOrDefault(x => x.Key.ToLower() == "pagesize").Value, out int pageSize))
{
obj.PageSize = pageSize;
}
else
{
obj.PageSize = Int32.MaxValue;
}
string sort = query.FirstOrDefault(x => x.Key.ToLower() == "sort").Value;
obj.Sort = new Sort();
if (string.IsNullOrWhiteSpace(sort) == false)
{
obj.Sort.Orders = JsonConvert.DeserializeObject <Sort.Order[]>(sort);
}
break;
}
bindingContext.Result = (ModelBindingResult.Success(obj));
return(Task.CompletedTask);
}
return(Task.CompletedTask);
}
catch (Exception exception)
{
if (!(exception is FormatException) && (exception.InnerException != null))
{
exception = ExceptionDispatchInfo.Capture(exception.InnerException).SourceException;
}
bindingContext.ModelState.TryAddModelError(bindingContext.ModelName, exception, bindingContext.ModelMetadata);
return(Task.CompletedTask);
}
}