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Recent comments macro for DasBlog

Tim

One of the issues I had with John Forsythe's Recent Comments macro for DasBlog was that the dasBlog recent comments weren't ordered by date (descending). I found that as people commented on older posts they were getting buried which irritated me as many were very still valid comments.

The fix was actually fairly simple, it was just a matter of adding  a sort and thanks to Lamba expressions, this is something we can do fairly simply. If you want to add recent comments to your dasBlog installation, use the following macro:

Recent Comments Macro

public virtual Control RecentComments(int count, int adminComments, int trimTitle, int trimContent, int trimAuthor, bool showTitle, bool showCommentText, bool showCommentCount)
{
    int commentsToShow;
    int totalComments;

    CommentCollection allComments = this.requestPage.DataService.GetAllComments();
    totalComments = allComments.Count;

    //Sort the comments in date order (descending)
    allComments.Sort((c1, c2) => c1.CreatedUtc.CompareTo(c2.CreatedUtc));

    if (!this.requestPage.HideAdminTools && SiteSecurity.IsInRole("admin"))
        commentsToShow = totalComments - adminComments;
    else
        commentsToShow = totalComments - count;

    if (commentsToShow < 0)
        commentsToShow = 0;

    StringBuilder sb = new StringBuilder();

    sb.AppendLine("<div class=\"recentComments\">");

    if (showCommentCount)
        sb.AppendFormat("<div class=\"totalComments\">Total Comments: {0}</div>", totalComments);

    sb.AppendLine("<ul class=\"comments\">");

    #region Loop through the comments

    for (int i = totalComments - 1; i >= commentsToShow; i--)
    {
        Comment current = allComments[i];

        bool showComment;
        if (!current.IsPublic || (current.SpamState == SpamState.Spam))
        {
            if (!this.requestPage.HideAdminTools && SiteSecurity.IsInRole("admin"))
            {
                showComment = true;
            }
            else
            {
                showComment = false;
                if (commentsToShow > 0)
                    commentsToShow--;
            }
        }
        else
        {
            showComment = true;
        }

        if (showComment)
        {
            if ((current.SpamState == SpamState.Spam))
                sb.Append("<li class=\"spam\">");
            else if (!current.IsPublic)
                sb.Append("<li class=\"hidden\">");
            else
                sb.Append("<li>");

            string link = String.Format("{0}{1}{2}", SiteUtilities.GetCommentViewUrl(current.TargetEntryId), "#", current.EntryId);
            string title = current.TargetTitle;
            string desc = current.Content;
            string author = current.Author;

            if (showTitle)
            {
                sb.AppendFormat("<div class=\"recent{0}CommentsTitle\"><a href=\"{1}\">",
                    current.SpamState,
                    link
                    );

                if ((title.Length > trimTitle) && (trimTitle > 0))
                    sb.AppendFormat("RE: {0}...", title.Substring(0, trimTitle));
                else
                    sb.AppendFormat("RE: {0}", title);

                sb.Append("</a></div>");
            }

            if (showCommentText)
            {
                sb.AppendFormat("<div class=\"recentCommentsContent\"><a href=\"{0}\">",
                    link
                    );

                if ((desc.Length > trimContent) && (trimContent > 0))
                {
                    sb.Append(desc.Substring(0, trimContent));
                    sb.Append("...");
                }
                else
                {
                    sb.Append(desc);
                }

                sb.Append("</a></div>");
            }

            sb.Append("<div class=\"recentCommentsAuthor\">");

            if ((author.Length > trimAuthor) && (trimAuthor > 0))
            {
                int num3 = (trimAuthor > author.Length) ? author.Length : trimAuthor;
                sb.Append("by " + author.Substring(0, num3));
                sb.Append("...");
            }
            else
            {
                sb.Append("by " + author);
            }
            sb.Append("</div></li>");
        }
    }
    #endregion

    sb.AppendLine("</ul>");
    sb.AppendLine("</div>");

    return new LiteralControl(sb.ToString());
}

I've since been working on extending it further so you can add a "All Comments" link which I'll post up later as it needs a little more work :)

If you want this wrapped up as a DLL let me know and I'll upload it.

Update 26th Feb 2009: You can download the dll here (it's also got a few other things in there if you want to look around).

Update 27th Feb 2009: I noticed that the above code was messing up everynow and again so I've updated it to use Linq instead which seems to work well. I've updated the DLL but not the source yet.

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