public static void GridParams(out int take, out int skip, out int page, out int pageSize, out string OrderByField, out string OrderByType, out List <KendoFilter> filters, HttpRequestBase Request)
{
take = int.Parse(Request.Params["take"]);
skip = int.Parse(Request.Params["skip"]);
page = int.Parse(Request.Params["page"]);
pageSize = int.Parse(Request.Params["pageSize"]);
OrderByField = !String.IsNullOrEmpty(Request.Params["sort[0][field]"]) ? Request.Params["sort[0][field]"] : "";
OrderByType = !String.IsNullOrEmpty(Request.Params["sort[0][dir]"]) ? Request.Params["sort[0][dir]"] : "";
var localFilters = new List <KendoFilter>();
foreach (var filterName in Request.Params)
{
if (Regex.IsMatch(filterName.ToString(), @"filter\[filters\]\[\d\]\[value\]"))
{
Match match = Regex.Match(filterName.ToString(), @"(\d)");
var i = int.Parse(match.Groups[0].Value);
var filter = new KendoFilter();
filter.Name = Request.Params[$"filter[filters][{i}][field]"];
filter.Operator = Request.Params[$"filter[filters][{i}][operator]"];
filter.Value = Request.Params[$"filter[filters][{i}][value]"];
localFilters.Add(filter);
}
}
filters = localFilters;
}
/// <summary>
/// Преобразует экземпляр CallsRequest в XElement для передачи в запросах
/// </summary>
/// <param name="obj">Экземпляр CallsRequest</param>
/// <returns>XElement с данными CallsRequest</returns>
static public XElement ToXElement(CallsRequest obj)
{
var xml = new XElement("Request");
xml.Add(new XElement("sessionKey", obj.SessionKey));
xml.Add(new XElement("page", obj.Page));
xml.Add(new XElement("pageSize", obj.PageSize));
xml.Add(new XElement("searchTerm", obj.SearchTerm));
KendoFilter.AddRequestFilters(ref xml, obj.Filters);
return(xml);
}
public JsonResult GetCalls(long?page, long?pageSize, KendoFilter filter = null, string searchTerm = "")
{
var requestParameters = new CallsRequest()
{
SessionKey = session.Key,
Page = page.HasValue ? page.Value : 0,
PageSize = pageSize.HasValue ? pageSize.Value : 0,
SearchTerm = searchTerm,
Filters = filter
};
var response = WebHostCache.Current.GetResponse <XElement>(@"api\CallRegistry\GetCalls", CallsRequest.ToXElement(requestParameters), WebHostCache.ContentTypes.xml);
var result = CallDTO.ArrayFromXElement(response).ViewModelList();
return(Json(new { rc = 0, Items = result, Total = response.Element("Total").getValue(Int32.MinValue) }, JsonRequestBehavior.AllowGet));
}
private bool TryGetFilter(ModelBindingContext bindingContext, string prefix, out KendoFilter filter)
{
if (TryGetFilterLogic(bindingContext, prefix, out var logic))
{
var filters = new List <KendoFilter>();
var filterIndex = 0;
while (true)
{
if (!TryGetFilter(bindingContext, $"{prefix}[filters][{filterIndex}]", out var subFilter))
{
break;
}
filters.Add(subFilter);
filterIndex++;
}
filter = new KendoFilter
{
Logic = logic,
Filters = filters
};
return(true);
}
if (TryGetFilterField(bindingContext, prefix, out var field) && TryGetFilterValue(bindingContext, prefix, out var value))
{
filter = new KendoFilter
{
Field = field,
Operation = TryGetFilterOperation(bindingContext, prefix, out var operation) ? operation : null,
Value = value
};
return(true);
}
filter = null;
return(false);
}
//public PagedResult<CourseDto> Get([FromQuery]FilterRequest request)
public async Task <PagedResult <CourseDto> > Get([DataSourceRequest] DataSourceRequest request)
{
var filter = new KendoFilter(request);
return(await _service.Get(filter));
}
private static SystemExpression ToExpression(ParameterExpression parameter, KendoFilter filter)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
if (filter.Filters != null)
{
if (filter.Filters.Count() < 2)
{
throw new ArgumentOutOfRangeException(nameof(filter.Filters), filter.Filters, "Number of Filters must be at least 2.");
}
switch (filter.Logic)
{
case "or":
return(OrElseExpression(parameter, filter.Filters));
case "and":
case null:
return(AndAlsoExpression(parameter, filter.Filters));
default:
throw new ArgumentOutOfRangeException(nameof(filter.Logic), filter.Logic, "Logic not supported.");
}
}
switch (filter.Operation)
{
case "eq":
case null:
return(EqualExpression(parameter, filter.Field, filter.Value));
case "neq":
return(NotEqualExpression(parameter, filter.Field, filter.Value));
case "lt":
return(LessThanExpression(parameter, filter.Field, filter.Value));
case "lte":
return(LessThanOrEqualExpression(parameter, filter.Field, filter.Value));
case "gt":
return(GreaterThanExpression(parameter, filter.Field, filter.Value));
case "gte":
return(GreaterThanOrEqualExpression(parameter, filter.Field, filter.Value));
case "startswith":
return(StartsWithExpression(parameter, filter.Field, filter.Value));
case "endswith":
return(EndsWithExpression(parameter, filter.Field, filter.Value));
case "contains":
return(ContainsExpression(parameter, filter.Field, filter.Value));
case "doesnotcontain":
return(NotContainsExpression(parameter, filter.Field, filter.Value));
default:
throw new ArgumentOutOfRangeException(nameof(filter.Operation), filter.Operation, "Operator not supported.");
}
}
public static async Task <string> BuildWhereClauseAsync <T>(int index, string logic,
KendoFilter filter, List <object> parameters)
{
var entityType = (typeof(T));
var property = entityType.GetProperty(filter.Field);
var relFieldName = filter.Field;
switch (filter.Operator.ToLower())
{
case "eq":
case "neq":
case "gte":
case "gt":
case "lte":
case "lt":
if (typeof(DateTime).IsAssignableFrom(property.PropertyType))
{
parameters.Add(DateTime.Parse(filter.Value).Date);
return(string.Format("EntityFunctions.TruncateTime({0}){1}@{2}",
filter.Field,
ToLinqOperator(filter.Operator),
index));
}
if (typeof(int).IsAssignableFrom(property.PropertyType))
{
parameters.Add(int.Parse(filter.Value));
return(string.Format("{0}{1}@{2}",
filter.Field,
ToLinqOperator(filter.Operator),
index));
}
parameters.Add(filter.Value);
return(string.Format("{0}{1}@{2}",
relFieldName,
ToLinqOperator(filter.Operator),
index));
case "startswith":
parameters.Add(filter.Value);
return(string.Format("{0}.StartsWith(" + "@{1})",
relFieldName,
index));
case "endswith":
parameters.Add(filter.Value);
return(string.Format("{0}.EndsWith(" + "@{1})",
relFieldName,
index));
case "contains":
parameters.Add(filter.Value);
return(string.Format("{0}.Contains(" + "@{1})",
relFieldName,
index));
default:
throw new ArgumentException(
"This operator is not yet supported for this Grid",
filter.Operator);
}
}