public virtual async Task <int> AddAsync(TblPostCategories record)
{
_dbContext.PostCategories.Add(record);
await _dbContext.SaveChangesAsync();
QueryCacheManager.ExpireTag(CacheTags.PostCategory);
_eventPublisher.EntityInserted(record);
return(record.Id);
}
public virtual async Task <PostCategoryModel> PreparePostCategoryModelAsync(TblPostCategories category)
{
PostCategoryModel result;
if (category == null)
{
result = new PostCategoryModel();
}
else
{
result = category.Adapt <PostCategoryModel>();
await category.LoadAllLocalizedStringsToModelAsync(result);
}
return(result);
}
public virtual async Task UpdateAsync(TblPostCategories record)
{
var allCategories = (await GetAsEnumerableAsync()).ToList();
var oldRecord = allCategories.FirstOrDefault(p => p.Id == record.Id);
allCategories.RemoveWhere(p => p.Id == record.Id);
allCategories.Add(record);
if (DetectLoop(allCategories, record, null))
{
throw new Exception("Self referencing loop detected");
}
_dbContext.PostCategories.AddOrUpdate(record);
await _dbContext.SaveChangesAsync();
QueryCacheManager.ExpireTag(CacheTags.PostCategory);
_eventPublisher.EntityUpdated(record, oldRecord);
}
protected virtual bool DetectLoop(List <TblPostCategories> categories, TblPostCategories category, HashSet <TblPostCategories> visited)
{
visited = visited ?? new HashSet <TblPostCategories>();
var parentCategory = categories.FirstOrDefault(p => p.Id == category.ParentCategoryId);
if (parentCategory != null)
{
if (!visited.Contains(parentCategory))
{
visited.Add(parentCategory);
return(DetectLoop(categories, parentCategory, visited));
}
else
{
return(true);
}
}
return(false);
}
protected virtual string GetCategoryName(List <TblPostCategories> allCategories, string categoryName, TblPostCategories currentCategory)
{
if (currentCategory.ParentCategoryId == null)
{
return(categoryName);
}
return(GetCategoryName(allCategories, "——" + categoryName,
allCategories.FirstOrDefault(p => p.Id == currentCategory.ParentCategoryId.Value)));
}
