public override async Task <IViewProviderResult> BuildEditAsync(Topic topic, IViewProviderContext updater)
{
List <int> selectedLabels;
// Persist state on post back
if (_request.Method == "POST")
{
selectedLabels = await GetLabelsToAddAsync();
}
else
{
// Get entity labels
var labels = await GetEntityLabelsByEntityIdAsync(topic.Id);
selectedLabels = labels?.Select(l => l.LabelId).ToList();
}
var viewModel = new LabelDropDownViewModel()
{
Options = new LabelIndexOptions()
{
FeatureId = await GetFeatureIdAsync()
},
HtmlName = LabelHtmlName,
SelectedLabels = selectedLabels?.ToArray()
};
return(Views(
View <LabelDropDownViewModel>("Topic.Labels.Edit.Sidebar", model => viewModel).Zone("sidebar")
.Order(2)
));
}
public async Task <IViewComponentResult> InvokeAsync(LabelDropDownViewModel model)
{
if (model.SelectedLabels == null)
{
model.SelectedLabels = new int[0];
}
var labels = await BuildSelectionsAsync(model);
if (labels != null)
{
model.LabelsJson = labels.Serialize();
}
return(View(model));
}
private async Task <IEnumerable <LabelApiResult> > BuildSelectionsAsync(LabelDropDownViewModel model)
{
if (model.SelectedLabels == null)
{
return(new List <LabelApiResult>());
}
if (((int[])model.SelectedLabels).Length == 0)
{
return(new List <LabelApiResult>());
}
// Get all labels for selected ids
var labels = await _labelStore.QueryAsync()
.Select <LabelQueryParams>(q =>
{
q.Id.IsIn(model.SelectedLabels.ToArray());
})
.OrderBy("TotalEntities", OrderBy.Desc)
.ToList();
// Build results
var results = new List <LabelApiResult>();
if (labels?.Data != null)
{
foreach (var label in labels.Data)
{
results.Add(new LabelApiResult()
{
Id = label.Id,
Name = label.Name,
Description = label.Description,
ForeColor = label.ForeColor,
BackColor = label.BackColor
});
}
}
return(results);
}
