public override void Process(TagHelperContext context, TagHelperOutput output)
{
var urlHelper = UrlHelperFactory.GetUrlHelper(
new ActionContext(ContextAccessor.HttpContext,
new RouteData(),
new Microsoft.AspNetCore.Mvc.Abstractions.ActionDescriptor()));
var itemsPerPage = (ItemsPerPage ?? 0);
if (itemsPerPage == 0)
{
int.TryParse(ViewOptions.PerPageDefault, out itemsPerPage);
}
var currentPage = (CurrentPage ?? 1);
var totalItems = (TotalItems ?? 0);
if (totalItems > itemsPerPage)
{
var totalPages = (totalItems + (itemsPerPage - 1)) / itemsPerPage;
string controller = String.IsNullOrEmpty(Controller) ? (ViewContext.ActionDescriptor as ControllerActionDescriptor)?.ControllerName : Controller;
string action = String.IsNullOrEmpty(Action) ? "Index" : Action;
var httpContext = ContextAccessor.HttpContext;
var pageList = new List <string> {
"«",
"‹"
};
switch (totalPages)
{
case 2:
pageList.Add("1");
pageList.Add("2");
break;
case 3:
case 4:
case 5:
for (var i = 1; i < totalPages; i++)
{
pageList.Add(i.ToString());
}
break;
default:
if (currentPage < 4)
{
for (var i = 1; i < 6; i++)
{
pageList.Add(i.ToString());
}
}
else
{
var endPage = currentPage + 2 < totalPages ? currentPage + 3 : totalPages + 1;
for (var i = endPage - 5; i < endPage; i++)
{
pageList.Add(i.ToString());
}
}
break;
}
pageList.Add("›");
pageList.Add("»");
var list = new FluentTagBuilder("ul").AddCssClass("pagination pagination-sm")
.MergeAttribute("style", "display:inline;");
dynamic routeValues = new ExpandoObject();
foreach (var page in pageList)
{
routeValues = new ExpandoObject();
if (page.IsNumeric())
{
routeValues = new { page, itemsPerPage }
}
;
else if (page == "«")
{
routeValues = new { page = 1, itemsPerPage }
}
;
else if (page == "‹")
{
routeValues = new {
page = currentPage - 1 > 0 ? currentPage - 1 : 1,
itemsPerPage
}
}
;
else if (page == "›")
{
routeValues = new {
page = currentPage + 1 <= totalPages ? currentPage + 1 : totalPages,
itemsPerPage
}
}
;
else if (page == "»")
{
routeValues = new {
page = totalPages,
itemsPerPage
}
}
;
foreach (var obj in httpContext.Request.Query)
{
if (!obj.Key.Equals("page", StringComparison.CurrentCultureIgnoreCase))
{
routeValues[obj.Key] = obj.Value;
}
}
var li = new FluentTagBuilder("li")
.AppendHtml(Generator.GenerateActionLink(ViewContext, page, action, controller, string.Empty, string.Empty, string.Empty, routeValues, null));
if (page.IsNumeric())
{
if (Convert.ToInt32(page) == currentPage)
{
li.AddCssClass("active");
}
}
list.AppendHtml(li);
}
routeValues = new ExpandoObject();
foreach (var obj in httpContext.Request.Query)
{
if (!obj.Key.Equals("page", StringComparison.CurrentCultureIgnoreCase))
{
routeValues[obj.Key] = obj.Value;
}
}
var perPageSelect = new FluentTagBuilder("select")
.GenerateId("ddlResultsPerPage", "")
.MergeAttribute("style", "width:auto;float:left;margin-right:15px;")
.MergeAttribute("data-url", urlHelper.Action(Action, Controller, (object)routeValues))
.AddCssClass("itemCountDropdown form-control")
.MergeAttribute("onchange", "javascript:window.location.href = $('.itemCountDropdown option:selected').attr('tag')");
routeValues.Page = 1;
foreach (var item in ViewOptions.PerPageList)
{
routeValues.itemsPerPage = item.Value;
item.Selected = item.Value == itemsPerPage.ToString();
var option = new FluentTagBuilder("option")
.MergeAttribute("value", item.Value)
.Append(item.Text)
.MergeAttribute("tag", urlHelper.Action(action, controller, (object)routeValues));
if (item.Selected)
{
option.MergeAttribute("selected", "selected");
}
perPageSelect.AppendHtml(option);
}
output.PostElement.AppendHtml(perPageSelect);
output.PostElement.AppendHtml(list);
}
}
}
public override void Process(TagHelperContext context, TagHelperOutput output)
{
var modelMetadata = ViewContext.ViewData.ModelMetadata;
var props = new List <ModelMetadata>(); // GetProperties(modelMetadata);
props.AddRange(MetadataProvider.GetMetadataForProperties(modelMetadata.ElementType ?? modelMetadata.ModelType));
var columnName = string.Empty;
if (!DisplayFor.Contains("."))
{
var chosen = props.SingleOrDefault(p => p.PropertyName == DisplayFor);
if (chosen != null)
{
output.Content.SetContent(chosen.GetDisplayName());
columnName = chosen.PropertyName;
}
}
else
{
var propertyNames = DisplayFor.Split('.');
foreach (var propertyName in propertyNames)
{
modelMetadata = props.SingleOrDefault(p => p.PropertyName == propertyName);
if (modelMetadata == null)
{
break;
}
if (propertyName == propertyNames[propertyNames.Length - 1])
{
var displayName = modelMetadata.GetDisplayName();
if (String.IsNullOrEmpty(displayName))
{
displayName = propertyName;
}
output.Content.SetContent(displayName);
columnName = modelMetadata.PropertyName;
}
else
{
props.Clear();
props.AddRange(MetadataProvider.GetMetadataForProperties(modelMetadata.ElementType));
}
}
}
if (Sort)
{
var urlHelper = UrlHelperFactory.GetUrlHelper(new ActionContext(ContextAccessor.HttpContext, new Microsoft.AspNetCore.Routing.RouteData(), new Microsoft.AspNetCore.Mvc.Abstractions.ActionDescriptor())); //ContextAccessor.HttpContext.RequestServices.GetRequiredService<IUrlHelper>();
var itemsPerPage = 0;
int.TryParse(ContextAccessor.HttpContext.Request.Query["itemsPerPage"], out itemsPerPage);
if (itemsPerPage == 0)
{
int.TryParse(ViewOptions.PerPageDefault, out itemsPerPage);
}
var currentPage = 1;
int.TryParse(ContextAccessor.HttpContext.Request.Query["page"], out currentPage);
if (currentPage == 0)
{
currentPage = 1;
}
var controller = String.IsNullOrEmpty(Controller) ? (ViewContext.ActionDescriptor as ControllerActionDescriptor)?.ControllerName : Controller;
var action = String.IsNullOrEmpty(Action) ? ViewContext.RouteData.Values["action"].ToString() : Action;
if (string.IsNullOrEmpty(action))
{
action = "Index";
}
dynamic routeValues = new ExpandoObject();
foreach (var obj in ContextAccessor.HttpContext.Request.Query)
{
((System.Collections.Generic.IDictionary <string, object>)routeValues)[obj.Key] = obj.Value;
}
routeValues.sortColumn = columnName;
routeValues.sortOrder = SortOrder.Ascending;
var ul = new FluentTagBuilder("ul")
.AddCssClass("sort-spinner")
.AppendHtml(new FluentTagBuilder("li")
.AppendHtml(Generator.GenerateActionLink(ViewContext,
string.Empty,
action,
controller,
string.Empty,
string.Empty,
string.Empty,
routeValues,
new { @class = "fa fa-sort-asc" })));
routeValues.sortOrder = SortOrder.Descending;
ul.AppendHtml(new FluentTagBuilder("li")
.AppendHtml(Generator.GenerateActionLink(ViewContext,
string.Empty,
action,
controller,
string.Empty,
string.Empty,
string.Empty,
routeValues,
new { @class = "fa fa-sort-desc" })));
output.Content.AppendHtml(ul);
}
}