public static GridModel ToGridModel(this IQueryable queryable, int page, int pageSize, string orderBy, string groupBy, string filter)
{
GridCommand command = GridCommand.Parse(page, pageSize, orderBy, groupBy, filter);
return(queryable.ToGridModel(page, pageSize, command.SortDescriptors, command.FilterDescriptors, command.GroupDescriptors));
}
public static GridBuilder <T> PreserveGridState <T>(this GridBuilder <T> builder) where T : class
{
var grid = builder.ToComponent();
if (!grid.DataBinding.Ajax.Enabled)
{
return(builder);
}
if (grid.Id.IsEmpty())
{
throw new SmartException("A grid with preservable state must have a valid Id or Name");
}
var urlHelper = new UrlHelper(grid.ViewContext.RequestContext);
var gridId = "GridState." + grid.Id + "__" + grid.ViewContext.RouteData.GenerateRouteIdentifier();
grid.AppendCssClass("grid-preservestate");
grid.HtmlAttributes.Add("data-statepreserver-href", urlHelper.Action("SetGridState", "Common", new { area = "admin" }));
grid.HtmlAttributes.Add("data-statepreserver-key", gridId);
// Try restore state from a previous request
var info = (GridStateInfo)grid.ViewContext.TempData[gridId];
if (info == null)
{
return(builder);
}
var state = info.State;
var command = GridCommand.Parse(state.Page, state.Size, state.OrderBy, state.GroupBy, state.Filter);
if (grid.Paging.Enabled)
{
var pathChanged = !info.Path.Equals(grid.ViewContext.HttpContext.Request.RawUrl, StringComparison.OrdinalIgnoreCase);
if (!pathChanged)
{
if (command.PageSize > 0)
{
grid.Paging.PageSize = command.PageSize;
}
if (command.Page > 0)
{
grid.Paging.CurrentPage = command.Page;
}
}
}
if (grid.Sorting.Enabled)
{
foreach (var sort in command.SortDescriptors)
{
var existingSort = grid.Sorting.OrderBy.FirstOrDefault(x => x.Member.IsCaseInsensitiveEqual(sort.Member));
if (existingSort != null)
{
grid.Sorting.OrderBy.Remove(existingSort);
}
grid.Sorting.OrderBy.Add(sort);
}
}
if (grid.Grouping.Enabled)
{
foreach (var group in command.GroupDescriptors)
{
var existingGroup = grid.Grouping.Groups.FirstOrDefault(x => x.Member.IsCaseInsensitiveEqual(group.Member));
if (existingGroup != null)
{
grid.Grouping.Groups.Remove(existingGroup);
}
grid.Grouping.Groups.Add(group);
}
}
if (grid.Filtering.Enabled)
{
foreach (var filter in command.FilterDescriptors)
{
var compositeFilter = filter as CompositeFilterDescriptor;
if (compositeFilter == null)
{
compositeFilter = new CompositeFilterDescriptor {
LogicalOperator = FilterCompositionLogicalOperator.And
};
compositeFilter.FilterDescriptors.Add(filter);
}
grid.Filtering.Filters.Add(compositeFilter);
}
}
// persist again for the next request
grid.ViewContext.TempData[gridId] = info;
return(builder);
}