Deep Thoughts by Robert Felty » sql

Showing total number of replies in bbpress

robfelty — Fri, 09 Apr 2010 21:36:59 +0000

showing total number of replies on a bbpress profile page

For awhile now I have been wanting to show the total number of topics started and replies in a bbpress forum on the profile page. Today I finally figured out how. I like bbpress quite a bit, as it integrates very nicely into wordpress. The main downside of bbpress right now is that the documentation is still basically nonexistent. Maybe someday I will help out with it.

Anyways, to get the total number of replies, simply use the following little mysql query:

global $bbdb;

$totalReplies = $bbdb->get_var("SELECT COUNT(post_id) FROM " .

$bbdb->prefix . "posts WHERE poster_id=$user->ID");

?>

To get the total number of topics started, use:

global $bbdb;

$totalTopics = $bbdb->get_var("SELECT COUNT(topic_id) FROM " .

$bbdb->prefix . "topics WHERE topic_poster=$user->ID");

?>

WordPress 2.9 image changes

robfelty — Sat, 02 Jan 2010 22:58:48 +0000

WordPress 2.9 has several new image enhancements. One of the biggest features is some basic image editing functionality. Another one is that you can now specify different alt text from the “caption” field. The “caption” field places a caption under the image. The “alt” text is used to describe the picture to non-seeing users (including search engines). This is a nice addition. However, I usually like my caption, alt text, and title text to be all the same, and I don’t like to have to enter it all manually or copy and paste. By default, wordpress will use an IPTC caption as its “description” field, which shows up in the title attribute of the image. This is nice, since I can add a caption in my image editing program of choice (Picasa) and then I don’t have to enter it again. Except for those pesky alt and caption fields, which are blank by default.

This is particularly important if I am uploading many pictures. So I wrote a little sql which will set the “caption” and “alt text” fields to be the same as the description. I already had this working for the “caption” field for quite some time, but getting it to work for the different alt text handling in 2.9 was a bit tricky, since I discovered that the alt text is not stored in wp_posts like the other fields. Instead it is stored in the wp_postmeta table, which is new in 2.9. Although it took me awhile to figure this out, the new table is a welcome addition. Now for each image you upload, wordpress stores meta information in this table, including the width and height, different sized versions of the file, the IPTC caption, some EXIF info and a few other goodies. This means that if you like to include EXIF info about your pictures, that doing so requires only a simple database lookup, instead of having to read the headers from the image, which should be considerably faster I would imagine.

Now for my little SQL which sets the “caption” and “alt text” to be the same as the description. I run this on my server after uploading pictures. It would be even better if I could figure out how to do this as a wordpress plugin.

-- First we set the image caption (post_excerpt) to be the same as the

-- description (post_content)

UPDATE wp_posts SET post_excerpt=post_content WHERE post_type='attachment' AND

date(post_date)=curdate();

-- Next we set the alternative text to be the same as the post_excerpt

INSERT INTO wp_postmeta (wp_postmeta.post_id, wp_postmeta.meta_value) SELECT

DISTINCT wp_posts.ID, wp_posts.post_excerpt FROM wp_posts, wp_postmeta WHERE

wp_posts.ID=wp_postmeta.post_id AND post_type='attachment' AND

date(post_date)=curdate();

-- This line sets the correct meta_key for the previous line, which doesn't

-- seem possible otherwise

UPDATE wp_postmeta SET meta_key='_wp_attachment_image_alt' WHERE meta_key IS

NULL;

Releasing the Collapsing Archives WordPress Plugin

robfelty — Thu, 20 Dec 2007 05:14:09 +0000

Finally getting around to releasing some more plugins. I started using the Fancy Archives plugin by Andrew Rader about the same time I started using his Fancy Categories plugin (maybe in the reverse order actually). I have been modifying it for some time now, and it seems appropriate to release it as a new plugin. The functionality is best described by simply looking at my archives list on this blog. The default wordpress archives list is a simple unordered list. This plugin gives it some dynamic capabilities, similar to the default on Blogger. I have decided to keep increasing the version number from what Andrew was using, so I am calling this version 0.6. Here are the main highlights:

Changed name from Fancy Archives to Collapsing Archives
Changed author from Andrew Rader to Robert Felty
Added option to link to archives.php
Added option to list in chronological or reverse chronological order
Added triangles which mark the collapsing and expanding features
That is, clicking on the triangle collapses or expands, while clicking
on a month or year links to the archives for the said month or year
Changed behavior from starting all expanded and then collapsing on page
load to the opposite
Removed the rel=’hide’ and rel=’show’ tags, because they are not xhtml
1.0 compliant. Now uses the CSS classes instead

You can download it from the WordPress plugin repository.

Releasing the Collapsing Categories WordPress Plugin

robfelty — Thu, 20 Dec 2007 03:51:05 +0000

I started using the Fancy Categories plugin by Andrew Rader about 6 or 8 months ago. I have been slowly modifying it for some time now, and it seems appropriate to release it as a new plugin. (Note that I thought that Andrew Rader disappeared as well, but I now have found him at his new home at void*. The functionality is best described by simply looking at my categories list on this blog. The default wordpress categories list is a simple unordered list. This plugin gives it some dynamic capabilities, similar to the default on Blogger. I have decided to keep increasing the version number from what Andrew was using, so I am calling this version 0.2. Here are the main highlights:

Changed name from Fancy Archives to Collapsing Archives
Changed author from Andrew Rader to Robert Felty
Added triangles which mark the collapsing and expanding features That is, clicking on the triangle collapses or expands, while clicking on a month or year links to the archives for the said category. This uses html entities (dings) instead of images, for a variety of reasons
Lists the titles of posts, instead of just listing subcategories
Removed the rel=’hide’ and rel=’show’ tags, because they are not xhtml 1.0 compliant. Now uses the CSS classes instead
MOST IMPORTANTLY — it is compatible with both the pre 2.3 database which uses categories, and the 2.3+ database structure which uses the tag taxonomy

You can download it from the WordPress plugin repository.

Chronologically ordered blog in wordpress

robfelty — Mon, 14 May 2007 15:34:49 +0000

I recently started the FedDibblety house blog, documenting our home improvements to our new home in Indiana (which Clare’s parents built). I set up accounts for my wife Clare, her parents, Dave and Ellen, and my parents, Harold and Fran. Ellen, being a technology nut like myself, immediately jumped in writing posts about the house, and also had some feature requests. One of those features was to have the blog read in chronological order. Most blogs read in reverse chronological order, but since this one was kind of diary-esque, it seemed more appropriate to have it in normal order. I am also dating posts corresponding to the improvements made, not the actual post date. I started searching around for forum posts and such about how to do this, and I came across two relevant ones. I came across one post on wordpress.org which had a very simple solution, of simply adding one line to the index.php file in the root directory, like so:

/* Short and sweet */

define('WP_USE_THEMES', true);

$order = 'ASC'; //adding this line

require('./wp-blog-header.php');

?>

This did exactly as one would expect. However, this also caused some problems. For those avid blog readers, now they would have to scroll way down (or go the archives) to see new posts, which doesn’t really make sense. In addition, the RSS feed was also chronologically ordered, so that RSS users would find it very difficult to see if the blog had been updated recently. While searching I also found another post on janegalt.net, in which the blogger asked the same question, and a reply by Jeff Licquia suggested a very simple solution:

To set up archives to use a different template, go into the management page, then go to Options, then Permalinks.

If you can’t, or don’t understand, the RewriteRules stuff, look at the note about not being able to use mod_rewrite. Where it says:

/index.php/archives/%year%/%monthnum%/%day%/%postname%/

Change “index.php” to something else, like “archives.php”, and put that in for the virtual site structure. Copy index.php to archives.php in your document root, then add the special flag to archives.php. You should be all set at that point.

(I’m a newbie to WordPress, but not to Web servers or Web stuff in general, so the above makes sense to me but isn’t tested. I’ll try to help if you have problems.)

This idea worked very well. I made the change in the WordPress options page, then copied index.php to archives.php, using the $order=ASC flag, and removed that from index.php. Then I had to change the .htaccess file to direct queries to archives.php. I did not want to do this for feeds though, so I had to put in two rules, like so:

#.htaccess file for fedibblety/house blog

<IfModule mod_rewrite.c>

RewriteEngine On

RewriteBase /house/

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_FILENAME} !.*feed\/?$ [NC]

RewriteRule . /house/archives.php

RewriteCond %{REQUEST_FILENAME} .*feed\/?$ [NC]

RewriteRule . /house/index.php

IfModule>

Then there was one last thing. In that blog (and in this one), I am using the fancy-archives plugin (as I write this post that site seems to be down, so I am not providing a link), which I have tweaked a bit. To get the archives in the sidebar listed in chronological order, I just had to change the SQL queries in the fancy-archives-list.php file to ORDER BY post_date ASC.

That was it!