/// <summary>
/// Get the standard value for the field. If the field is the Layout field (__renderings), it attempts to use base
/// layouts. Otherwise, it passes the call on to the inner provider, which is usually the built-in standard values
/// provider.
/// </summary>
/// <param name="field">
/// The field.
/// </param>
/// <returns>
/// The standard value
/// </returns>
public override string GetStandardValue(Field field)
{
try
{
if (field.IsLayoutField() && _baseLayoutValidator.ItemSupportsBaseLayouts(field.Item))
{
if (_settings.AlwaysCheckForCircularReference &&
_baseLayoutValidator.HasCircularBaseLayoutReference(field.Item))
{
_log.Warn(
"Circular Base Layout reference detected on item {0}. Aborting base layout composition.",
field.Item.Paths.Path);
}
else
{
var layoutValue = _baseLayoutValueProvider.GetBaseLayoutValue(field.Item);
if (!string.IsNullOrEmpty(layoutValue))
{
return(layoutValue);
}
}
}
}
catch (Exception ex)
{
_log.Error(ex, "Error getting layout value.");
}
return(_innerProvider.GetStandardValue(field));
}
public string GetBaseLayoutValue(Item item)
{
var value = _cache.GetLayoutValue(item);
if (string.IsNullOrWhiteSpace(value))
{
value = _innerProvider.GetBaseLayoutValue(item);
if (!string.IsNullOrWhiteSpace(value))
{
_cache.AddLayoutValue(item, value);
}
}
return(value);
}