Smokes your problems, coughs fresh air.

Tag: WordPress (Page 2 of 3)

Ytec, WordPress and Aihato.nl

On Oktober, the 25th, in what will be known to future generations as a historical move, Wiebe changed the A record of www.aihato.nl to point to the new production site running at Ytec. The new site, a collaboration by Ytec and me, based on WordPress, has been in development since May. At least, that’s when I started taking notes. There had been some discussion, wire-framing and design done before that time.

The graphical design for the new Aihato website was created in Photoshop by a Ytec employee, building on a wire-frame created by Ying Hao (good friend and owner of Ytec). Another Ytec employee freed me of the burden of slicing the design into HTML/CSS, so that I could concentrate on the WordPress programming work involved. I liked not having to worry too much about design for once.

Comfortably Installed at Ytec

Comfortably Installed at Ytec

Initial development setup

Because I had decided to put WordPress in its own subdirectory to keep my custom stuff separate from the factory default stuff, I needed my own vhost at Ytec, something I had gotten used to with all my previous web development projects. Initially, I tried to make things work in my own ~subdirectory on a shared vhost, but this wreaked havoc with the rewrite voodoo that I needed to make WordPress live comfortably in its own subdir. Maybe, it would have been better to use vendor branches; but decisions, decisions…

A Makefile for deployment, sychronisation and backups

On many of my recent projects, I’ve used Rake instead of GNU Make. This time, I took it oldschool to pimp up my Make skills a bit. This proved pretty necessary, because I’ve spent ages on a bug in a previous version of the Makefile were I defined a variable after a make target without realizing that I had to put this in a separate rule from the instructions to make that target.

Why I even need a Makefile? Because when you’ve had your fair share of deployment, synchronisation and backup problems, you like to define rules to avoid these problems. Makefiles are ideal for that purpose, because they consist of rules.

I’m publishing the Makefile here because it’s one of the prettier Makefiles I’ve made and I like to brag and remember myself of some of the new things that I learned during its creation.

RSYNC_OPTIONS := --verbose --progress --recursive --delete --links --times --filter='merge ./rsync-upload-filters'
WORKING_COPY_ROOT := ${HOME}/www.aihato.nl/
LIVE_PRODUCTION_ROOT := ytec.nl:/too/much/info/aihato.nl/
LIVE_DEVELOPMENT_ROOT := ytec.nl:/too/much/info/aihato-dev/
MYSQL_LOGIN := --user=aihato --password=InYourDreamsIdForgetToChangeThis
 
 
deploy-production:
    # First, I sync everything except the symlink to the current WP version
    rsync $(RSYNC_OPTIONS) --filter="exclude /wp"  $(WORKING_COPY_ROOT) $(LIVE_PRODUCTION_ROOT)
    # Now, if the symlink's target has changed, we've atomically upgraded all WP files
    rsync $(RSYNC_OPTIONS) $(WORKING_COPY_ROOT) $(LIVE_PRODUCTION_ROOT)
 
backup-production: 
    rsync ${RSYNC_OPTIONS} $(LIVE_PRODUCTION_ROOT)uploads/ $(HOME)/aihato-uploads/
    ssh ytec.nl "mysqldump $(MYSQL_LOGIN) aihato" > aihato.sql
 
update-development: 
    rsync $(RSYNC_OPTIONS) $(WORKING_COPY_ROOT) $(LIVE_DEVELOPMENT_ROOT)
    rsync $(RSYNC_OPTIONS) $(LIVE_PRODUCTION_ROOT)uploads/ $(LIVE_DEVELOPMENT_ROOT)uploads/
    ssh ytec.nl "mysqldump $(MYSQL_LOGIN) aihato | mysql $(MYSQL_LOGIN) dev_aihato"
 
backup-development: mysql-dump-development
    rsync ${RSYNC_OPTIONS} $(LIVE_DEVELOPMENT_ROOT)uploads/ $(HOME)/aihato-uploads/
 
mysql-dump-development:
    ssh ytec.nl "mysqldump $(MYSQL_LOGIN) dev_aihato" > dev_aihato.sql
 
.PHONY: update-development backup-production deploy-production mysql-dump-development
www.aihato.nl – Front page – top portion

Top portion of the front page

www.aihato.nl – Settings – Reading

www.aihato.nl – Settings – Reading

Front page

The front page, after the header with the navigation and logo, starts with of a little snippet of text to welcome visitors. The rest of the page is filled with some selected stuff from the rest of the website: the latest news excerpts (plus a link to the full archive and the news feed and the Aihato hyve), clickable sponsor logos, some upcoming agenda items, a promotional movie clip, the latest video from the video gallery, a carousel with the latest photos, another carousel with all the fighter profiles and the latest fight results.

In WordPress, when you want the home page to be a static page, you have to change a setting in the Settings / Reading subpanel. You will then have to choose another page to be the “posts” page. The other page will than use the template hierarchy the same way the home page would without this setting. The only custom page template you can use for it is home.php, which might cause confusion with the actual home page.

Template entanglement

The start page is one of a number of pages for www.aihato.nl that needed a custom template. To associate a custom template with the start page, I had two choices: I could either name the template file page-3.php, according to the Template Hierarchy, or I could create a Page Template. The difference between the two options is that with the latter option, the association with the custom template happens from the Edit Page screen, whereas the first option relies on the naming of a template file in my theme. I chose the first option, which is a bit ugly, because after setting a page as start page, editing the page slug is no longer possible. (Normally you can name the template file page-<slug>.php, which is clearer and doesn’t depend on database state.) Both solutions are ugly in a sense because there’s just too much stuff in the database to my taste, but that’s another story which I’ll probably tell in reference to Drupal one day, since Drupal is way uglier than WordPress in this sense.

I’ve ended up with a bit of a random mix of page-targeted templates and templates targeted from pages. The highlight is a template which does both: page-sportschool.php targets the page with the “sportschool” slug, but also has the following comment so that I can select it from the Page Edit screen for the subpages of “sportschool”:

<?php
/*
Template Name: Sportschool 
 */
?>
Aihato Events mangement interface

Aihato Events mangement interface

Events

It was decided that the new website, like the old website, would have an agenda. The old website’s agenda was never up-to-date, so the new agenda should be easier to edit. To that end, I created an aihato-events plugin.

The plugin is quite simple. It adds two tables to the database – one to record (and announce) events and another to store fight results for these events (wins, losses, etc.). The second table links to a fighter profile by post ID (but more about that later).

Aihato Event Contestants

Aihato Event Contestants

Agenda page

Agenda page

The event management interface is pretty decent. It includes a few darlings, which I wouldn’t like to kill, except that I will probably overhaul the whole Aihato Events UI at some unspecified time in the future. The darlings are small touches such as the “Add new” buttons above and below the table which add a new row through AJAX at the top or the bottom of the table depending on which button is clicked. I’m also always a sucker for the in-place AJAX editing of the rows. The reason why I’ll probably still overhaul the UI at some future time is that I don’t like the same simple tabular interface for the Contestants panel. I had predicted that fight events would generally first be placed in the agenda before the event takes place, untill after the event, the results would be added. So far, nothing has been placed in the agenda before it takes place. Only after, to be able to link it to the results to be added. And even if this wasn’t true, the two screens should still become one I think.

The homepage contains the first few upcoming events. Sadly, there aren’t any yet. 😕 Below that short (and empty) list, there’s a big button which links to the complete agenda. This page has a design that somewhat deviates from the rest. Of course, it also has some custom template programming (in a template called page-agenda.php).

Page with fight results

Page with fight results

Event results

The homepage also contains all the fight results for the latest event in a nice little table at the bottom right. Consistent with all the other areas on the homepage, this one is also followed by a link to the results for all recorded events in the form of a nice big button. The page with the complete results is powered by page-uitslagen.php.

This is one of the templates which I should really clean up by moving some code into nice and clean helper functions that live in the theme’s functions.php instead of all over the place.

I18n

My interest in internationalization for this website extends only as far as that I want the visitor to be talked to in Dutch as much as possible. For the rest, I don’t really care. How much I don’t care can be summed up by the total absence of __()-encapsulated strings in my theme. What’s worse: my custom plugins also lack these l10n hooks, although, because I always feel like a sinner when working directly in what is considered a translation target by me and the rest of the English-oriented development world, the event management stuff that I added to the management interface is in English (although, again, without l10n hooks, so what’s the point?).

Aihato – Profile – Tobias

Fighter profile for Tobias

Aihato – Edit fighter profile

Editing a fighter profile now

Aihato – Profile – Djura

Fighter profile for Djura

Fighter profiles

Fighter profiles play a dominant role in the new design. Implementation took some time, and I’m still not entirely satisfied. During development, custom post types were introduced in WordPress. I had already implemented the fighter profiles using a page template and a whole heap of custom fields. Adding new profiles this way, however, is far from user-friendly. The user has to:

  • Set the page parent to “Vechters” (Dutch for “Fighters”);
  • set the page template to “Vechter”;
  • add new custom fields for Discipline, Fight record, Weight, Class, Age, Length and City while making sure that the values are entered correctly since these don’t have a type;
  • and set a featured image for display in the fighter carousel on the front page and above the profiles.

This is a lot of work, none of which is very obvious, so I hoped that custom post types would save the day. Theoretically they could have, but there were a few issues, some of which I only encountered when I was already quite far into the development of an aihato-profiles plugin which implemented the aihato_fighter custom post type.

I started out by fooling with some plugins to do some of the heavy lifting (such as Custom Post Type UI). I wasn’t particularly charmed by these for reasons which I’ve sadly forgotten because I haven’t commented on it at the time. One reason I can think of is that I never like defining stuff in the database which I feel belongs in a file.

There seemed to be a bug in the custom post type admin interface created by WordPress in that, even though I had enabled thumbnail support for my post type, the UI for this was lacking. Another bug related to images was that clicking the Insert image button replaced the current page with the upload dialog instead of loading it in a modal dialog through AJAX. These two bugs were show-stoppers. I won’t comment any further on the whole custom post type development process until I actually continue this process.

Anyway, it all works now and I don’t mind doing some work on new fighter profiles myself. Editing existing ones is easy enough, and at the visitor end, it all looks sexy enough. 😎

Guest-book

Implementing the guest book was pretty easy. What was less easy was importing all the entries from the old guest-book. Although, even that was incredibly easy compared with extracting (exporting is too expensive a verb) the entries from the old guest-book. The old guest-book was basically impossible to spider, because the pagination depended on POST. If it were only the page number in the POST request, it wouldn’t have been too bad (and quite hackable for my purpose), but there was all sorts of session-related crap and other ugly stuff that smelled like a bunch of Microsoft Monkeys had gone all out in a HTTP obfuscation contest.

My initial import strategy consisted of a simple PHP script (with a function adapted from some plugin) to be ran from the command-line, that accepted the author and date as arguments and the post body over STDIN.

<?php
 
require_once('wp-config.php');
 
function guestbook_new_comment ( $commentdata ) {
  $commentdata['comment_post_ID'] = 19 # This is the Aihato guestbook page
  $commentdata['user_ID']         = 0 # These people don't have accounts
 
  $commentdata['comment_author_IP'] = '127.0.0.1' $_SERVER['REMOTE_ADDR'];
  $commentdata['comment_agent']     = 'Hacked together import scripts (by BigSmoke)';
 
  // We want to use the original comment date, not the time now.
  //$commentdata['comment_date']     = current_time('mysql');
  //$commentdata['comment_date_gmt'] = current_time('mysql', 1);
 
  // Automatically approve these comments.
  $commentdata['comment_approved'] = 1;
 
  // Actually add to the database
  $comment_ID = wp_insert_comment($commentdata);
 
  do_action('comment_post', $comment_ID, $commentdata['comment_approved']);
 
  return $comment_ID;
}
 
$commentdata['comment_author'] = $ARGV[1];
$commentdata['comment_date'] = $commentdata['comment_date_gmt'] = $ARGV[2];
$commentdata['comment_content'] = trim(readfile(STDIN));
 
$new_comment_id = guestbook_new_comment($commentdata);
echo "Inserted new comment $new_comment_id to post 19.\n";
 
?>

The script would be called from a Ruby script that parsed the ugly-ass HTML-like tag soup also known as the old guest-book. I have to admit that the script is as ugly as the shit it’s supposed to make sense of. Fuck it! One-of scripts don’t need to look good; it’s already been deleted from svn 75 revisions ago.

However, I never could call the PHP script from the Ruby script because I couldn’t get the necessary gems to install on the development server where the import needed to happen, so I ran the script locally and modified it to use WordPress’ XML-RPC interface. To make this work, I only had to install a WordPress plugin to allow anonymous comments through XML-RPC. (See my previous notes on this subject, if you’re interested.)

[By the way, I just copied this script to the clipboard using “svn cat https://svn.ytec.nl/svn/aihato/trunk/import-guestbook.rb@37|xsel --clipboard”; see my post on xsel if you want to learn more.]

Aihato - Guestbook

The finished guestbook, complete with all the old and new enties

#!/usr/bin/ruby
 
require 'scrapi'
require 'open3'
require 'xmlrpc/client'
 
 
guestbook_entry = Scraper.define do
  process "td > div.GB_Head > div.GB_Date", :date => :text
  process "td > div.GB_Head > div.GB_Name", :name => :text
  process "td > div.GB_Body > div.GB_BodyText", :body => :element
 
  result :date, :name, :body
end
 
guestbook = Scraper.define do
  array :entries
 
  process "table.GB_MainGrid tr", :entries => guestbook_entry
 
  result :entries
end
 
# I need to do this because the document has at least 3 <html> tags,
# so it's impossible to parse, even for Tidy
fake_document = "<html><body>"
reading_guestbook_table = false
STDIN.readlines.each do |line|
  if line =~ /<table class="GB_MainGrid"/
    reading_guestbook_table = true
  end
  
  if reading_guestbook_table
    fake_document += line
    reading_guestbook_table = false if line =~ %r{</table>}
  end
end
fake_document += "</body></html>"
 
entries = guestbook.scrape(fake_document)
 
entries.delete_at(0)
 
entries.each do |entry|
  next unless entry['body']
 
  date_parts_in_proper_order = entry['date'].split(/-/).reverse
  date_string_with_proper_zeroes = "%d%02d%02dT00:00:00" % date_parts_in_proper_order
  entry['date'] = XMLRPC::Convert.dateTime( date_string_with_proper_zeroes )
 
  server = XMLRPC::Client.new("aihato.dev.ytec.nl", "/wp/xmlrpc.php")
 
  entry['body'] = entry['body'].to_s
  entry['body'].gsub!(%r{<div class='GB_BodyText'>(.*)</div>}m, '\1')
  entry['body'].gsub!(%r{</p>\s*<p>}, "\n\n")
  entry['body'].gsub!(%r{</?p>}, "")
  entry['body'].chomp!
 
  new_comment_id = server.call('wp.newComment', 1, '', '', 19, {'comment_parent' => 0, 'content' => entry['body'].to_s, 'author' => entry['name'], 'author_url' => '', 'author_email' => 'dummy@example.com'} )
 
  puts new_comment_id.inspect
  
  # Change date and approval status
  server.call('wp.editComment', 1, 'myuser', 'nottherealpassword', new_comment_id, {'status' => 'approve', 'date_created_gmt' => entry['date'], 'author' => entry['name'], 'author_email' => 'dummy@example.com'})
 
  #Open3.popen3("php -q import-guestbook.php '#{entry['name']}' #{entry['date']}") do |stdin, stdout, stderr|
  #  stdin << entry['body']
  #end
end

Because I was too stupid to write a spider function to download the old guest-book, I ended up simply clicking through all the pages and feeding the page source to my import script one page at the time.

The new guest book is the only page on the website with comments enabled. For the rest it’s like any other page with its own custom template (page-gastenboek.php).

Aihato – Contact

The contact form

Contact form

In my notes made during the development process, I have made a few comments (1, 2, 3, 4) about the troubles I had when looking for a simple plugin to create a simple contact form. I would have saved quite some time if I had skipped the search and wrote my own code to handle it. In the end I did use a plug-in. Well, I forked it, but that’s just another way of using it, isn’t it?

Aihato - News - 2010

The news archive

News

The actual news section (where I could use WordPress’ core strength – its blogging engine) is maybe the foremost reason why I let myself be suckered into another web project despite my many vows to never program for money again. (Well, this being a club project, means that I could somewhat sidestep my many promises to myself, because there was hardly money involved in the process. (I train for free for a year.))

The old website’s news page was just a very long list of all the news since 2003. This was pretty suck-ass. What was much worse, though, was that there was no RSS feed. This new website being WordPress based means that I have a whole slew of feeds to chose from. It gave me quite a kick when the first news item posted by someone else hit my feed reader. Now, there are no longer any sites left that I have to manually check for updates. Yay!

An interesting choice I made for the news archive is that I skipped pagination altogether and instead presented a list of years all the way back to 2003 where you’d normally expect to see pagination. Personally, I don’t mind long pages. In fact, I often find clicking “Next” and “Previous” infinitely much more annoying.

Commenting on the news isn’t allowed by request of the Aihato boys. They gave some pretty good reasons not to do this mostly related to the intentional abuse by club members and members of competing clubs that they’ve seen on the website of a friendly club.

The news section is just one of the many places where I’ve made thankful use of WordPress’ new Post Thumbnails feature. I like it when stuff that’s only available through clumsy hacks and plugins makes it into core. By the way: when working with post thumbnails, the regenerate-thumbnails plugin proved to be an enormous aid.

Aihato – Photo albums

Overview of all photo albums

Aihato – Photo album – Ede

Photo album of a grappling competition

Media gallery

Even on the old website, the foto gallery played an important role. Thinking of the best way how to do this in WordPress was quite a headache.

To start with, the design requirements were pretty steep. Ying had included a coverflow-like effect in his wire-frame for viewing individual albums. Luckily, the list of photo albums wasn’t too difficult (a simple grid-view) and made easier still by the HTML/CSS guy. I also skipped a few requirements such as highest rated photos and videos. (I skipped the rating feature altogether.) Still, I spent a lot of time looking through available plug-ins and into different ways to solve the most challenging requirement: there had to be a separate section for the photo albums and the videos, where intuitively I’d simply include it all in the news as is customary with a blog. In the end, I did exactly this but with a twist.

The process of publishing a new photo album has become extremely straight-forward: the user has to upload the images using the Add image link, insert the gallery in the post (if they want a clear link from the news item view to the gallery) and check the “Fotogalerij” (Dutch for “photo gallery”) category (if they want the album to appear in the list of albums).

Since I’ve chosen not to make photo albums a separate entity in the back-end, I had to work a little magic to make them appear as such to the visitor. But I didn’t want to make the separation go too far; I don’t like websites (such as the old Aihato website) where the photo gallery seems bolted on as an afterthought and the user has to upload an album and then create a link to the album in the news.

The gallery view

You know how WordPress makes a comments feed available for every post? It accomplishes this using something it calls a rewrite endpoint (“feed” for feeds). For example:

http://www.example.com/blog/2010/11/08/post-with-interesting-comments/feed/atom/
http://www.example.com/blog/2010/11/08/post-with-interesting-comments/feed/rss/ 

You can add such a rewrite endpoint yourself using the add_rewrite_endpoint() function. The code below shows how I created an alternative view for my posts and pages called “gallery”. It also shows what I need to do to make an extra query variable available with the name of the endpoint. The part after the slash after the endpoint in the URL become the new query variable’s value.

add_rewrite_endpoint('gallery', EP_PERMALINK | EP_PAGES);
$wp_rewrite->flush_rules();
 
add_filter('query_vars', 'aihato_queryvars');
add_action('template_redirect', 'aihato_special_gallery_template');
 
function aihato_special_gallery_template() {
  global $wp_query;
 
  if ( is_category('fotogalerij') or is_category('filmgalerij') ) {
    include(TEMPLATEPATH . '/galleries.php');
    exit;
  }
 
  if ( isset($wp_query->query_vars['gallery']) ) {
    include(TEMPLATEPATH . '/gallery.php');
    exit;
  }
}
 
function aihato_queryvars($qvars) {
  $qvars[] = 'gallery';
  return $qvars;
}

The code above creates an alternative “view” of posts that I can use to view all the images attached to that post. When the user inserts the gallery into a post, the following code makes it so that instead of the images, the visitor will see a link to the gallery view of that post.

add_filter('post_gallery', 'aihato_gallery_filter', 2);
 
/**
 * Modifies the behaviour of the [gallery] shortcode.
 */
function aihato_gallery_filter($null, $attr = array()) {
// Snipped: code to generate a nice link
}

ContentFlow / FancyBox integration

To make the gallery view look cool, I implemented the CoverFlow effect using the ContentFlow jQuery plugin. It’s pretty cool. It supports reflection, scrolling with a scroll wheel and it just feels right™. I hooked it up to FancyBox, a very slick Lightbox clone for jQuery. The result was, I must say, immensely pleasing. 🙂 Both effects support scrolling and the FancyBox effects make it look like the images in the ContentFlow are really blown up and shrunk. (I’ve made it so that the FancyBox appears when you click the active image in the ContentFlow.)

This is some of the spaghetti code that made the two effects play nicely together:

// Returns the offset of the item to start showing
function albumFlowStartItem() {
  var hashNumber = window.location.hash;
 
  if ( hashNumber && hashNumber.match(/^#\d+$/) ) {
    hashNumber = hashNumber.replace(/^#(\d+)$/, '$1');
    return jQuery('#album_flow a#attachment-'+hashNumber).prevAll().size();
  }
 
  return 'center';
}
 
// My own custom state variable
jQuery.fancybox.remainActiveUntilClosed = false;
 
jQuery(document).ready(function() {
  jQuery('#album_flow a').fancybox({
    transitionIn: 'elastic',
    transitionOut: 'elastic',
    speedIn: 600,
    speedOut: 200,
    overlayShow: false,
    cyclic: true,
    onStart: function(selectedArray, selectedIndex, selectedOpts) {
      element = selectedArray[selectedIndex];
 
      return jQuery.fancybox.remainActiveUntilClosed || element.hasClassName('active');
    },
    onComplete: function() {
      jQuery.fancybox.remainActiveUntilClosed = true;
    },
    onClosed: function() {
      jQuery.fancybox.remainActiveUntilClosed = false;
    }
  });
 
  var albumFlow = new ContentFlow('album_flow', {
    reflectionHeight: 0.3,
    flowSpeedFactor: 0.7,
    startItem: albumFlowStartItem(),
    onclickActiveItem: function(item) {
      var itemOffset = jQuery(item.element).prevAll().size();
      jQuery.fancybox.pos(itemOffset);
    },
  });
});

Categories for photo/video galleries

To make a post appear in the photo gallery, you just have to check that category. Making posts appear in the video gallery works the same. These listings are displayed using the galleries.php template thanks to a little bit of code in aihato_special_gallery_template(). I redirected these archive views to that template because otherwise I’d have had to make a symlink to use the same file for the video category and the photo category. (I’d have needed two files: category-fotogalerij.php and category-filmgalerij.php.)

I like how I simply used a custom view of both a post and of two different category archives to achieve all my media gallery requirements. There’s no wild database customizations or heavy plug-ins involved. It’s low-fat and carb-free.

Aihato - Film gallery

The film gallery

YouTube is king

Because I was too lazy to find a good playback solution and I’m a bit reluctant to self-host video files anyway, I decided to put together something that relies solely on embedding videos hosted elsewhere. To be completely honest, although WordPress is quite flexible in this sense, “elsewhere” means just YouTube here.

The idea is simple: WordPress already allows you to just paste a YouTube URL into the post editor and all the embedding code is created for you. Building on this, to show the latest video on the homepage, I just perform a search for posts which contain a YouTube URL. Then I parse the content a bit, and include the YouTube ID in my own low-res embed code. (The latest video area on the homepage is smaller than the default embed created by WordPress.)

When generating the film gallery overview, my theme goes through all the YouTube URLs in all posts categorized as “Filmgalerij”. For each of these URLs, it uses the YouTube API to retrieve the movie title and the URL of an adequately sized thumbnail. That means that, for thumbnails to appear in the gallery, the associated posts don’t need a featured image, just one or more YouTube URLs. This approach also makes it so that you can embed as much YouTube URLs in each post as you like, since the gallery will cope beautifully.

When a visitor clicks a movie thumbnail, a YouTube embed pops up using FancyBox. Did I mention how cool FancyBox is? Pretty damn cool:

jQuery('a.youtube').click(function(){
  jQuery.fancybox({
    'padding': 0,
    'autoScale': false,
    'transitionIn': 'none',
    'transitionOut': 'none',
    'title': this.title,
    'width': 680,
    'height': 495,
    'href': this.href.replace(new RegExp("watch\\?v=", "i"), 'v/'),
    'type': 'swf',
    'swf': {
      'wmode': 'transparent',
      'allowfullscreen': 'true'
    }
  });
 
  return false;
});

Menus and navigation

// This is the ultimate in ugly hacks. Enjoy! :-)
function aihato_main_menu_filter($items) {
  global $wp_query;
 
  // menu-item-639 = Nieuws
  // menu-item-643 = Foto/Video (connected to the fotogalerij category)
 
  // This conditional makes it the current-menu-item also when we're in the filmgalerij category,
  // and when we're looking at the gallery view of a post (through the gallery rewrite endpoint).
  if ( is_category('filmgalerij') or isset($wp_query->query_vars['gallery']) ) {
    $items = preg_replace('!(menu-item-643)!', '\\1 current-menu-item', $items);
  }
  // This conditional ensures that the Nieuws menu item is active when we don't want to be in the gallery.
  // At the same time, it makes sure that the the Foto/Video menu item is inactive.
  elseif ( !isset($wp_query->query_vars['gallery']) and (is_archive() or is_single()) ) {
    $items = preg_replace('!(menu-item-639)!', '\\1 current-menu-parent', $items);
    $items = preg_replace('!current-menu-parent current-post-parent (menu-item-643)!', '\\1', $items);
  }
 
  return $items;  
}

As soon as WordPress 3.0 was released somewhere during the development of this website, I started to use its new Custom Menu Management feature.

Before the change:

<?php wp_list_pages(array( 'depth' => 1, 'title_li' => '', 'sort_column' => 'menu_order, post_title' )) ?>

After the change:

<?php wp_nav_menu(array( 'menu' => 'main', 'depth' => 1 )) ?>

As you can see, the change wasn’t difficult, but, more importantly, it gave me some useful powers that I could use for good. For the main menu, I could include a category, which I used to add the Fotogalerij category. I could also change the label of that item to be different from the category name so that it also seems to apply to the Filmgalerij category. That, together with the ugly hack above, gave me my illusionary Photo/Video category.

Aihato – Sportschool

Putting custom menus to good use in this section

Another place where I could put the custom menus to good use was the Sportschool section. There I had to design a submenu, because designers always forget a few vital pieces in their design, such as how submenus should look. However, the submenu shouldn’t just include links to pages, but also links to two different subscription forms (uploads). The new menu system allows me to do this quite easily.

So, again, I could replace something that didn’t do exactly what I wanted:

<?php wp_list_pages(array( 'title_li' => get_the_title(11), 'child_of' => 11, 'include' => array(11) )); ?>

With something simpler that did:

<?php wp_nav_menu(array( 'menu' => 'school' )) ?>

It is a curious aspect of this website that every section has its own means of navigating within that section.

  1. The fighter profiles section uses a carousel at the top to select fighters. In the future, some form controls to filter the carousel will also be added.
  2. The Photo/Video gallery is divided into two subsections (one for photos and one for videos). These subsections are subsequently navigated using a grid view of the individual photo albums or videos. When viewing a photo album, navigation is further refined using the ContentFlow UI.
  3. The news section is subdivided in yearly archives which are presented as a sort of pagination interface.
  4. The Sportschool (“Over Aihato”) section sports a simple “submenu” in the left column. This is in fact a separate menu defined in the theme and managed using the new menu editor.
  5. Finally, the guestbook uses WordPress’ default comment pagination.

Conclusion

This turned out to be a pretty long post taking a ridiculous amount of time to write. But, hey, this way I have at least documented the project. I don’t think that such detailed documentation would have happened otherwise. In my experience, “in-house” documentation sucks donkey ass. It’s never complete. It’s never up-to-date and – worst of all – it doesn’t invite comments. It’s just not part of big WWW.

I’m glad that the new website is on-line. I love how it turned out (even though I still hate web development). The enthusiastic reception of this project even compensates for some of my previous web development traumas. 😉 I find myself quite enjoying the after-work because of the laid-back attitude of the guys. What’s worse: I’m actually looking forward to implementing some of the planned improvements. That’s strange. Maybe it’s the complete lack of hysterics about the shape of a particular icon (“I want the trash can back!”) or the phrasing of a particular sentence (“How could this have happened?! You should have quadruple-checked this first! Aaarggh! Now our company will die because we look unprofessional!”). Some people are just more fun to work forwith than other people I guess.

Aihato WordPress development notes

I’m collaborating with YTEC on a new website for Aihato. I’ve picked WordPress to do most of the heavy lifting for this project. So far, I’ve spent most of my time on this project to get a good development environment in working order, with WordPress living in its own directory and some deployment recipes managed from a Makefile.

Now that I’m well-settled in the YTEC office with everything set-up and running, I hope to make some actual progress on this project next time that I’m here. 😉

WordPress pretty pagination plugin

During the recent redesign of my blog, I decided that I wanted to have pretty pagination with numbers instead of the WordPress default Older/Newer Posts links. The plugin I decided to use was WP Page Numbers by Jens Törnell.

This is how the pagination for page one of my home looks now:

WP Page Numbers on page 1

For page six you can see more of what the plugin can do:

WP Page Numbers on page 6

And finally…

WP Page Numbers on page 20

Do I have twenty pages of posts already?

AJAX comment preview for WordPress

Yesterday night, after mucking around with my Subversion repo for this blog for way too long, I finally stopped annoying the designer of my new theme and uploaded it, one and a half year after the last major redesign. Anyway, while implementing the new design for the comment list , I decided it was time to have comment previews.

At some time, I had already installed (but not activated) the Live Comment Preview plugin, but that’s client-side only. I removed it because I want the comment to show as it would after being piped through all the hooks and filters that comments normally get piped through. Enter the AJAX Comment Preview plugin:

Other preview plugins don’t know what sort of changes WordPress will make to a visitor’s comment, but this plugin uses AJAX and other buzzwords to send each previewed comment through WordPress’ inner voodoo.

The result? With the click of a button, your site’s visitors can preview their comments exactly as they will appear when they submit them for realies.

You just gotta love their phrasing. 🙂 Enjoy the new preview feature.

Tracking WordPress in a Subversion vendor branch

Two months prior to writing a script to upgrade MediaWiki installations using Subversion vendor branches, I wrote something similar for WordPress. It’s a little bit more limited and should really incorporate some of the improvements made for the MediaWiki version, but it worked fine so far:

cat upgrade-wordpress.sh 
#!/bin/bash
 
svn_repo_url=file:///var/svn/blog.omega-research.org/vendor/wordpress/
last_version=$1
new_version=$2
 
tmp_dir=`mktemp -d` $tmp_dir
 version $*;
    "Downloading and extracting WordPress version $version..."
 
    [ -z `svn ls $svn_repo_url|grep $version` ];
        branch= $version |sed -e 's/\.[0-9]\+$//'`
        archive_file="wordpress-$version.tar.gz"
        md5_file="wordpress-$version.md5"
 
        wget "http://wordpress.org/$md5_file"
        wget "http://wordpress.org/$archive_file"
 
        [ `md5sum $archive_file |cut -f 1 -d ' '` != `cat $md5_file` ];
            "MD5 sum did not match!" >&2
            1
       
 
        tar --extract --ungzip --transform "s/^wordpress/$version/" --file $archive_file
        svn_load_dirs.pl $svn_repo_url -t $version current $version
   
 -
svn merge "$svn_repo_url$last_version" "$svn_repo_url$new_version" .

I’m actually planning to make both scripts a little bit more generic (in the sense that svn_repo_url becomes an external param) and to track future changes to them using GitHub’s Gist. (How ironic is that, tracking an script for Subversion using Git?)

Complete WordPress Atom feed: an XSLT transformation

Previously, I tried obtaining a full Atom feed without pagination from WordPress. I didn’t succeed, so I ended up writing an XSL transformation which merges all the pages of this Atom feed into one valid Atom XML stream.

The transformation: wordpress-full-atom-feed.xsl

<?xml version="1.0" encoding="UTF-8"?>
 
<xsl:transform version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:atom="http://www.w3.org/2005/Atom"
xmlns:thr="http://purl.org/syndication/thread/1.0"
xmlns="http://www.w3.org/2005/Atom">
 
<xsl:param name="base_url" select="atom:feed/atom:link[@rel='self']/@href" />
 
 
<xsl:template match="/">
  <xsl:apply-templates select="node()" />
</xsl:template>
 
<xsl:template match="*">
  <xsl:element name="{name(.)}">
    <xsl:apply-templates select="node()" />
  </xsl:element>
</xsl:template>
 
<xsl:template match="@*|node()">
  <xsl:copy-of select="." />
</xsl:template>
 
<xsl:template match="atom:feed">
  <feed>
    <xsl:apply-templates select="@*|node()" />
 
    <xsl:call-template name="process_feed_page">
      <xsl:with-param name="page" select="number('2')" />
    </xsl:call-template>
  </feed>
</xsl:template>
 
<xsl:template name="process_feed_page">
  <xsl:param name="page" />
 
  <xsl:variable name="page_doc" select="document(concat($base_url, '?paged=', $page))" />
 
  <xsl:if test="$page_doc/atom:feed/atom:entry">
    <xsl:apply-templates select="$page_doc/atom:feed/atom:entry" />
  
    <xsl:call-template name="process_feed_page">
      <xsl:with-param name="page" select="$page + 1" />
    </xsl:call-template>
  </xsl:if>
</xsl:template>
 
</xsl:transform>

The transformation works by processing the atom:feed element. Before closing that, the process_feed_page template is called. This template tries to open the next page and process all atom:entry elements in there. Then it tries to recurse to the next page.

The next page’s URL can be guessed because this is the normal feed URL with ?paged=[pagenum] appended to it. The feed URL can be found because WordPress adds it to the feed:

<link rel="self" type="application/atom+xml" href="http://blog.bigsmoke.us/author/halfgaar/feed/atom" />

For very old WordPress versions this doesn’t work, because the paged parameter isn’t supported there. Also, older versions might require you to supply the $base_url param to the XSLT processor, because the rel='self' link is incorrectly set to the URL of the default feed within all other feeds (such as the author feed or the tag feed).

Invocation

Invocation is simple. I use libxslt‘s xsltproc:

xsltproc wordpress-full-atom-feed.xsl http://blog.bigsmoke.us/author/halfgaar/feed/atom

That’s it. You end up with a full feed as if there never was any pagination to begin with; it almost looks as if WordPress does support the nopaging option for feeds.

Finding a decent GeSHi plugin for WordPress

I like GeSHi (enough even to have written a language file for it). For ages now, I’ve used a WordPress plugin by Dan Peverill. But for as long as I’ve been using the plugin, I’ve been looking to get rid of it.

Dan Peverill’s GeSHI plugin sucks for two reasons:

  1. It’s no longer being maintained. It doesn’t even seem to justify a page on Dan’s website anymore (for which reason I’m not going to give him any link-juice).
  2. It breaks HTML. With the plugin enabled I can no longer use the <code> tag to mark in-line elements as being code. Frankly, this is annoying and I find myself typing <tt> often when I mean <code>.

A search for WordPress plugins tagged GeSHi reveals a number of results: Sniplets, CodeColorer, Developer Formatter, and WP-SynHighlight. WP-Syntax is a plugin that is missing from the tag search.

Sniplets seems much too generic to my taste. I just want a GeSHi highlighter, period.

CodeColorer says it does what I want, but if I ever want to use the TinyMCE editor again, I won’t be able to with this plugin. Shouldn’t be too much of a problem, but still…

Developer Formatter is very thoroughly written and even sports a TinyMCE plug-in for copying/pasting the code. It is pretty big, though, and, as a rule, I tend to avoid plug-ins that complicate the database schema. I also don’t really see how these extra tables are an advantage feature-wise.

WP-SynHighlight uses a custom BBCode-style tag, [codesyntax] I like this (if you’re going to use pointy brackets, at least keep out of the HTML namespace), though I don’t like the attempt at a generic name; what’s wrong with calling the tag [geshi]? Seriously… I’m sure I’m going to forget this name billions of times if I’ll use this plug-in.

WP-Syntax uses the <pre> tag with a few custom attributes. This at least is better than the officially inline <code> tag that my current plugin uses, because most of the time that I’d use a <pre> tag I really do want syntax highlighting. Just wondering: will it also allow my to use it normally for that other rare occasion? Sadly, the plugin will doubtlessly wreak havoc with the visual (TinyMCE) editor.

So, which plugin will I choose? I am somehow inclined to want a plugin that can play nice with the visual editor because I keep telling myself how much nicer it would be to switch to the visual editor for all my posting. (That this will be difficult because I disabled WP’s ‘wpautop‘ filter to rid myself of its eagerness is a story for some later time.) This requirement rules out CodeColorer and WP-Syntax.

That leaves Developer Formatter and WP-SynHighlight. Both seem to fit my purpose. Developer Formatter sports a nice TinyMCE plugin for inserting code, but I don’t think that switching to TinyMCE will suddenly and unexpectedly make me afraid of typing. Besides, I really don’t want the extra tables in my database without a very good reason, so, for now, I will try WP-SynHighlight.

WordPress feed pagination

Wiebe uses his author Atom feed to generate a list of his blog posts here on his own website. WordPress feeds only display the latest 10 entries. He has written 16 so far. What he needs is a feed with all his entries.

First, I tried if pagination works for feeds. Appending “/page/2” (as is used an non-feed lists) to a feed URL gives a 404 so I was kind of stuck there. Four days ago, after Googling for some time, unable to find a solution anywhere, I asked on the forum. Still no answer today so I tried to find out which parameters WordPress accepts in the QUERY_STRING. The WordPress Codex does explain how queries are handled but not which parameters are accepted.

Digging into wp-includes/query.php, with much trial and error, I found out that I can append ?paged=2 to the URL to get the next page. At least I got that sorted then. There are a number of much more promising parameters supported by get_posts(), but these don’t seem to be parsed by parse_query(). Next time, I’d like to find out how how to use two of these: nopaging and posts_per_page.

Wiebe could complete his list by merging together all the pages of the feed, but I’d much prefer to find a relatively painless method to produce a feed with an unlimited number of posts.

Notes

  • http://codex.wordpress.org/Query_Overview
  • http://codex.wordpress.org/Function_Reference/WP_Query
  • http://codex.wordpress.org/Template_Tags/query_posts

WordPress 2.7 administration panel changes

I really, really liked the new style of administration panel that was introduced in WordPress 2.5. In all the time since I’ve upgraded (and increasingly with every update), I’ve started to like it more and more. I hadn’t thought it possible but everything just felt at exactly the right place, while before 2.5, the whole always felt like it had been thrown together by a blind child. Had I written it myself, it would have at least felt as being thrown together by an adult (chimpanzee).

So I was happy. And I’m still happy. Yet, this time, it does take getting used to it. That’s a bit sad. Probably, it’ll be for all the better, with more space for more (plug-in) features and everything. Still… I will miss the old interface.

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