protected virtual void RewriteBranchRenderingDataSources(Item item, BranchItem branchTemplateItem, string branchRoot)
{
var branchBasePath = branchTemplateItem.InnerItem.Paths.FullPath;
LayoutHelper.ApplyActionToAllRenderings(item, rendering =>
{
if (string.IsNullOrWhiteSpace(rendering.Datasource))
{
return(RenderingActionResult.None);
}
// note: queries and multiple item datasources are not supported
var renderingTargetItem = item.Database.GetItem(rendering.Datasource);
if (renderingTargetItem == null)
{
Log.Warn("Error while expanding branch template rendering datasources: data source {0} was not resolvable.".FormatWith(rendering.Datasource), this);
}
// if there was no valid target item OR the target item is not a child of the branch template we skip out
if (renderingTargetItem == null || !renderingTargetItem.Paths.FullPath.StartsWith(branchBasePath, StringComparison.OrdinalIgnoreCase))
{
return(RenderingActionResult.None);
}
var relativeRenderingPath = renderingTargetItem.Paths.FullPath.Substring(branchBasePath.Length).TrimStart('/');
relativeRenderingPath = relativeRenderingPath.Substring(relativeRenderingPath.IndexOf('/')); // we need to skip the "/$name" at the root of the branch children
var newTargetPath = item.Paths.FullPath + relativeRenderingPath;
var newTargetItem = item.Database.GetItem(newTargetPath);
// if the target item was a valid under branch item, but the same relative path does not exist under the branch instance
// we set the datasource to something invalid to avoid any potential unintentional edits of a shared data source item
if (newTargetItem == null)
{
rendering.Datasource = "INVALID_BRANCH_SUBITEM_ID";
return(RenderingActionResult.None);
}
rendering.Datasource = newTargetItem.ID.ToString();
return(RenderingActionResult.None);
});
if (!item.HasChildren)
{
return;
}
item.Children.ToList().ForEach(x => RewriteBranchRenderingDataSources(x, branchTemplateItem, branchRoot));
}