How to use sitecore query in data source location? (dynamic data source)

Question

Can I set the location of a data source (not a data source) as a sitecore request?

I am trying to make the sublayer set its data source location to a folder under the element containing it (current element).

The location of the sublayer data source should point to a folder below the current item. So I tried to set the location of the data source for query:./Items/*but it did not work.

Answer 1

You don't need a query - the location of the sublayout data source can simply use a relative path. eg.

./Items

, . , , , . getRenderingDatasource : , . GetDatasourceLocation.

contentFolderTemplate=[GUID], .

public class CreateContentFolder
{
    protected const string CONTENT_FOLDER_TEMPLATE_PARAM = "contentFolderTemplate";

    public void Process(GetRenderingDatasourceArgs args)
    {
        Assert.IsNotNull(args, "args");
        Sitecore.Data.Items.RenderingItem rendering = new Sitecore.Data.Items.RenderingItem(args.RenderingItem);
        UrlString urlString = new UrlString(rendering.Parameters);
        var contentFolder = urlString.Parameters[CONTENT_FOLDER_TEMPLATE_PARAM];
        if (string.IsNullOrEmpty(contentFolder))
        {
            return;
        }
        if (!ID.IsID(contentFolder))
        {
            Log.Warn(string.Format("{0} for Rendering {1} contains improperly formatted ID: {2}", CONTENT_FOLDER_TEMPLATE_PARAM, args.RenderingItem.Name, contentFolder), this);
            return;
        }

        string text = args.RenderingItem["Datasource Location"];
        if (!string.IsNullOrEmpty(text))
        {
            if (text.StartsWith("./") && !string.IsNullOrEmpty(args.ContextItemPath))
            {
                var itemPath = args.ContextItemPath + text.Remove(0, 1);
                var item = args.ContentDatabase.GetItem(itemPath);
                var contextItem = args.ContentDatabase.GetItem(args.ContextItemPath);
                if (item == null && contextItem != null)
                {
                    string itemName = text.Remove(0, 2);
                    //if we create an item in the current site context, the WebEditRibbonForm will see an ItemSaved event and think it needs to reload the page
                    using (new SiteContextSwitcher(SiteContextFactory.GetSiteContext("system")))
                    {
                        contextItem.Add(itemName, new TemplateID(ID.Parse(contentFolder)));
                    }
                }
            }
        }
    }
}