If you’ve got a robots.txt file and an XML sitemap, add the following line to robots.txt so that search engine spiders will pick up your sitemap without you having to submit.
Sitemap: http://example.com/sitemap.xml
Of course, change the url to match your actual site.
Quick little snippet to redirect your visitors to another page after they leave a comment.
function comment_redirect($location, $comment) {
return site_url('/thanks/');
}
add_filter('comment_post_redirect', 'comment_redirect');
Normally after leaving a comment in WordPress you’re sent back to the page where you left the comment. By using the comment_post_redirect filter you’ll be able to control where they go. As it’s written, this code will redirect back to a /thanks/ page on your site, but you could redirect it anywhere you want.
And a couple of things that are left out of most of the tutorials on this filter that I’ve seen.
First, whatever is returned from your function is where the visitor will be redirected. Of course, it’s a filter so it’s possible that another plugin will override your return value. If you absolutely have to be sure your code is the one that does the redirect you can either make sure your filter is the last in line or just call wp_redirect from the method.
And second, the $comment parameter contains information on the comment that was submitted. You can use this to make decisions on where to redirect. For example, I used this on a site where only comments on a specific custom post type should be redirected differently. One of the elements of the $comments parameter is the post that the comment belongs to. I was able to check the post_type for that post and determine what to do.
This came about from needing a way to automatically post to a Pinterest board.
Unlike most social sites, Pinterest doesn’t have a public API to handle auto posting so it took a bit of finagling and a Node.js package called Pin-It Node which does most of the heavy lifting.
var PinIt = require('pin-it-node');
var pinIt = new PinIt({
username: 'your_pinterest_username',
password: 'your_pinterest_password'
});
var settings = {
boardId: 'Numeric_board_id',
url: process.argv[2],
description: process.argv[3],
media: process.argv[4]
};
pinIt.pin(settings , function(err, pinObj) {
if (err) {
console.log('Error');
console.log(err);
return;
}
console.log('Success!');
console.log(pinObj);
});
Once the script is in place, you’ll run it like this.
$ node pin-it.js "Pin Title" "This is a description for the pin" "http://example/image.jpg"
You will need the numeric ID for the board you’re posting to. You can either dig through the HTML source to find it or use a tool that I kicked up in an afternoon because I didn’t want to dig through the HTML more than once.
And originally I was looking for a PHP script that would do the same. But since I wasn’t able to find anything that worked, I wound up just running shell_exec to call this script from the PHP file.
For a site I’m working on I needed a way to intercept a comment and block if a specific condition wasn’t met. This is what I wound up with.
function preprocess_comment_handler($comment_data) {
if (/* Some condition if they can comment */) {
return $comment_data;
}
wp_die('An error message that they cannot comment');
}
add_filter( 'preprocess_comment' , 'preprocess_comment_handler', 1 );
This hooks into the preprocess_comment filter which normally lets you edit comment data before it’s submitted to the database. In this case we’re not doing anything to the comment data if the comment is allowed to pass through, but we’re just killing the process if they’re not allowed to leave a comment.
One thing that I might go back and do later is redirect to an error page rather than just using wp_die. But for now, this is working well enough.
private String rotateString(String s, int distance) {
String out = "";
for (int i=0; i<s.length(); i++) {
out += s.charAt((i + distance) % s.length());
}
return out;
}
This comes from needing a quick and easy way to rotate a String in Java.
Needed a way to count how many quiz attempts students had on a specific quiz over a certain grade. The query below works with the Ad-Hoc database query Moodle plugin and lets you enter a module ID and what grade you want to count for a minimum.
SELECT u.lastname, u.firstname, u.idnumber, ( SELECT COUNT(*) FROM prefix_quiz_attempts attempts JOIN prefix_quiz quiz ON attempts.quiz=quiz.id JOIN prefix_course_modules cm ON cm.instance=quiz.id WHERE attempts.userid=u.id AND state='finished' AND cm.id=:module_id AND (attempts.sumgrades / quiz.sumgrades * quiz.grade) >= :minimum_grade ) AS quizcount FROM prefix_user u HAVING quizcount>0 ORDER BY u.lastname ASC, u.firstname ASC
Quick little snippet to toggle the value of a checkbox with jQuery.
jQuery('#checkbox_id').prop('checked', !jQuery('#checkbox_id').prop('checked'));
I needed this a couple days ago using a span with a font awesome image to take the place of a checkbox. Still needed an actual checkbox underneath for the form handler to work with. So I used this little piece of code to toggle the state of a hidden checkbox and then used the state of that checkbox to determine what CSS class to use for the fake checkbox.
Is XAMPP slow?
I’ve used XAMPP for pretty much as long as I’ve been doing web development. It makes it trivial to get Apache, MySQL, and PHP set up.Since upgrading from Windows 7 to Windows 10 though I’ve noticed it was running much slower. I just assumed that XAMPP is slow. There was also an upgrade to XAMPP as part of that, although I don’t remember what versions.
The slowness was especially noticeable working on Moodle plugins. It was almost unusable, although that’s not too surprising with the 250-300 database tables that Moodle uses.
Googling brought a bunch of potential solutions
And all of these seemed to help just a little bit, but so little that it could have just been psychological. Read more »
This is another one of those plugins that I’d thought about writing and Google kept me from needing to.
Sometimes when building a WordPress site I’ll need to create pages using straight HTML instead of the WYSIWYG editor. Without fail though I’ll accidentally click on the Visual tab and the editor will clear out most of my HTML I’ve thought that it would be nice to be able to disable the visual editor, but only for specific posts. Turns out, I wasn’t the only one.
The Always Edit in HTML WordPress plugin takes care of it.
Take a look at the screenshot on the right. Check the box and save your post and the visual editor is gone. Nothing to foul up the HTML.
A couple of months ago we bought an Epson DS-510 scanner. Although I haven’t run it long enough to know how well it holds up, it’s been doing really well so far.
One big snag though. The goal was to scan receipts. And most of the time it worked flawlessly. But really long receipts would always jam, even though it’s supposed to support scans up to 36 inches. And it wasn’t really even jamming. It was just stopping and showing a jam message.
Thanks to a comment reply on Amazon I discovered it’s not really jamming. It’s just that the scanner only scans up to about 16 inches if auto paper size is selected. By changing from auto size to a manually selected size it scans longer receipts without a hitch.
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