The other day I came across a plugin that provided some useful functions to WordPress but is so badly coded that I can’t recommend it to anyone to use it. Though there are a lot of blog posts ranting about people “doing it wrong” this not be named plugin does so many things wrong in one place that I’m simply feeling the urge to write about a few of them.
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Yet another rant about bad WordPress plugin programming habits
May 10, 2012 Leave a Comment
The selectbox mystery of WordPress
December 6, 2011 Leave a Comment
The other day I wanted to use a selectbox with 5 elements in my plugin’s option page. No problem I thought:
<select size="5"> <option "test1" /> <option "test2" /> <option "test3" /> <option "test4" /> <option "test5" /> <option "test6" /> </select>
What everybody including me expects is something like this:
But I actually got this:
The mystery lies in the style sheet for the admin area:
#wpcontent select { padding: 2px; height: 2em; font-size: 12px; }
This forces every selectbox to display only one element. I have no idea why this is implemented. There is also a ticket in the WP tracking system discussing this behaviour since two years.
The solution to this problem is quite easy:
<select style="height:auto" size="5">
Seems easy but costed me over 1 hour of my lifetime.
WordPress: Shorten title
August 22, 2011 1 Comment
A frequently asked question in WordPress forum is how to shorten the title of a post to a predefined number of characters and to append a “…”.
The problem is solved with a few lines of code:
1 2 3 4 5 6 7 8 9 | add_filter( 'the_title', 'short_title' ); function short_title( $title ) { $chars = 20; if ( strlen( $title ) > $chars ) { $title = substr( $title, 0, $chars ); $title .= " …"; } return $title; } |
The variable $chars has to be set to the number of characters you want to have in your title and in line 6 you have to define the text to replace the omitted part of the title (… is the typographically correct version of three points, called ellipse).
It’s a bit disadvantageous that the title could be cut in the middle of a word. If you like you can extend the function accordingly:
1 2 3 4 5 6 7 8 9 10 | add_filter( 'the_title', 'short_title' ); function short_title( $title ) { $chars = 20; if ( strlen( $title ) > $chars ) { $title = substr( $title, 0, $chars ); $title = substr($title, 0, strrpos( $title, ' ' ) ); $title .= " …"; } return $title; } |
If you copy the function into the file functions.php of your theme all calls of the_title will return the shortened title.
Remove “by author” post section from Genesis themes
August 17, 2011 2 Comments
As I already wrote in How-to remove the author from your Twenty-Ten posts most blogs do not need the section “by author” since there is only one author.
By default most Genesis themes contain this section (e.g. the prose theme):
Let’s see how-to remove the author’s name from the post info. [Read more...]
WordPress: Remove links from the_category()
June 20, 2011 1 Comment
The standard way to display the categories a post belongs to is to use the function the_category, e.g, the call the_category(', '); will output:
As you see the categories are automatically linked to their respective category pages which in most cases is the style needed. Nevertheless there may be situations where you (or your customer) does not want the categories to link anywhere. Unfortunately WordPress does not provide any straightforward method to accomplish this so we have to make a small detour.
There are two ways we can take: rebuild the output or filter the output. [Read more...]
WordPress plugins: Don’t hard code path names …almost never!
June 11, 2011 5 Comments
The other day I found a plugin claiming the following in its instructions:
1) Upload the entire my-cool-plugin folder to the /wp-content/plugins/ directory 2) DO NOT change the name of the my-cool-plugin folder [...]
What the heck? Why shouldn’t I change the name of the folder? The author didn’t actually hard code the plugin path of the plugin, did he? [Read more...]
WordPress: Unified Login Error Messages
June 7, 2011 1 Comment
If you log-in to your WordPress blog and use an unregistered username the system will answer “ERROR: Invalid username. Lost your password?” and if you got your username right but not your password: “ERROR: The password you entered for the username admin is incorrect. Lost your password?”
So you know independently if you used a registered username or if the password isn’t right. That’s nice of WordPress, isn’t it? From the user point of view sure it is … and from the view of a possible attacker, too! [Read more...]
How-to remove the author from your Twenty-Ten posts
May 30, 2011 1 Comment
There are more than 1300 themes available in the official Theme Directory but many WordPress blogs are using the default theme Twenty Ten. The default header of a post looks like this:
Besides the date of publications the author of the article is displayed but since most blogs are operated by single persons this information is totally unnecessary. Additionally many bloggers write their posting while they’re logged in as Administrator so that the author is displayed has “admin”. This is not only unnecessary but also looks like you can’t handle your blog correctly.
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WordPress: Disable plugin table paging
April 5, 2011 2 Comments
Since WordPress 3.0 the plugin table is paginated by default, 20 entries at a time. In my mind this is totally useless since it means that I have to click through my plugins instead of simply scrolling through them with the mouse wheel. But there’s a more or less “hidden” option to display all plugins at once.
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WordPress: Metaboxes are (re-)movable
December 13, 2010 1 Comment
This might sound like an article for pure beginners but even users with years of WordPress experience are regularly scrolling their dashboard and editing pages up and down to reach the desired metaboxes. Meta what?
Metaboxes. Those are the boxes used in the dashboard, the new page, or the new post pages to group the display. Such a box can contain almost anything therefore the name. What many people not realize is that they can collapse/expand, move, and remove them.
[Read more...]
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