private async Task CleanArticleContentImage(Article article, DocumentFormatter df)
{
var articleImages = await _db.Images.Where(x => x.ArticleId == article.Id).ToListAsync();
var htmlImagesIdList = df.GetInDocumentImagesList("api/article/image/");
var needToDelete = articleImages.Except(htmlImagesIdList.Select(id => new Image {
Id = id
}))
.ToList();
_db.Images.RemoveRange(needToDelete);
await _db.SaveChangesAsync();
}
