/// <summary>
/// Renders a given Entity Model.
/// </summary>
/// <param name="htmlHelper">The HtmlHelper instance on which the extension method operates.</param>
/// <param name="entity">The Entity to render.</param>
/// <param name="containerSize">The size (in grid column units) of the containing element.</param>
/// <returns>The rendered HTML or an empty string if <paramref name="entity"/> is <c>null</c>.</returns>
public static MvcHtmlString DxaEntity(this HtmlHelper htmlHelper, EntityModel entity, int containerSize = 0)
{
if (entity == null)
{
return(MvcHtmlString.Empty);
}
if (containerSize == 0)
{
containerSize = SiteConfiguration.MediaHelper.GridSize;
}
MvcData mvcData = entity.MvcData;
using (new Tracer(htmlHelper, entity, containerSize, mvcData))
{
if (mvcData == null)
{
throw new DxaException($"Unable to render Entity Model [{entity}], because it has no MVC data.");
}
string actionName = mvcData.ActionName ?? SiteConfiguration.GetEntityAction();
string controllerName = mvcData.ControllerName ?? SiteConfiguration.GetEntityController();
string controllerAreaName = mvcData.ControllerAreaName ?? SiteConfiguration.GetDefaultModuleName();
RouteValueDictionary parameters = new RouteValueDictionary();
int parentContainerSize = (int)htmlHelper.ViewData[DxaViewDataItems.ContainerSize];
if (parentContainerSize == 0)
{
parentContainerSize = SiteConfiguration.MediaHelper.GridSize;
}
parameters["containerSize"] = (containerSize * parentContainerSize) / SiteConfiguration.MediaHelper.GridSize;
parameters["entity"] = entity;
parameters["area"] = controllerAreaName;
if (mvcData.RouteValues != null)
{
foreach (string key in mvcData.RouteValues.Keys)
{
parameters[key] = mvcData.RouteValues[key];
}
}
MvcHtmlString result = htmlHelper.Action(actionName, controllerName, parameters);
// If the Entity is being rendered inside a Region (typical), we don't have to transform the XPM markup attributes here; it will be done in DxaRegion.
if (!(htmlHelper.ViewData.Model is RegionModel) && WebRequestContext.IsPreview)
{
result = new MvcHtmlString(Markup.TransformXpmMarkupAttributes(result.ToString()));
}
return(Markup.DecorateMarkup(result, entity));
}
}
private static bool IsCustomAction(MvcData mvcData)
{
return(mvcData.ActionName != SiteConfiguration.GetEntityAction() ||
mvcData.ControllerName != SiteConfiguration.GetEntityController() ||
mvcData.ControllerAreaName != SiteConfiguration.GetDefaultModuleName());
}