public static string GetFormattedBreadCrumb(this ArticleGroup category,
IArticleService articleService,
string separator = ">>")
{
if (category == null)
throw new ArgumentNullException("category");
string result = string.Empty;
//used to prevent circular references
var alreadyProcessedArticleGroupIds = new List<int>() { };
while (category != null && //not null
!category.Deleted && //not deleted
!alreadyProcessedArticleGroupIds.Contains(category.Id)) //prevent circular references
{
if (String.IsNullOrEmpty(result))
{
result = category.Name;
}
else
{
result = string.Format("{0} {1} {2}", category.Name, separator, result);
}
alreadyProcessedArticleGroupIds.Add(category.Id);
category = articleService.GetArticleGroupById(category.ParentGroupId);
}
return result;
}
public static IList<ArticleGroup> GetArticleGroupBreadCrumb(this ArticleGroup articleGroup,
IArticleService articleService,
bool showHidden = false)
{
if (articleGroup == null)
throw new ArgumentNullException("articleGroup");
var result = new List<ArticleGroup>();
//used to prevent circular references
var alreadyProcessedArticleGroupIds = new List<int>() { };
while (articleGroup != null && //not null
!articleGroup.Deleted && //not deleted
(showHidden || articleGroup.Published) && //published
!alreadyProcessedArticleGroupIds.Contains(articleGroup.Id)) //prevent circular references
{
result.Add(articleGroup);
alreadyProcessedArticleGroupIds.Add(articleGroup.Id);
articleGroup = articleService.GetArticleGroupById(articleGroup.ParentGroupId);
}
result.Reverse();
return result;
}
