Category Archives: Passion

Passion

Things learned from Wordcamp 2012

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I attended most of the developer track presentations at Boston’s Wordcamp 2012. I learned about some interesting tools and techniques that I’d like to document for myself and others.

Talk Optimizing for Speed by Ben Metcalfe

  1. YouGetSignal’s Reverse IP Lookup – Shows you how many other hosts live on the same IP Address. This can be helpful for anyone using shared hosting or maybe VPS.
  2. Debug Bar – Get debugging information from each page WordPress page load.
  3. Google XML Sitemaps – Delete this plugin if you have it. (I had it.)
  4. YSlow – Get load times and optimization tips of a page request.

WordPress as a Web Framework by Sam Hotchkiss

  1. MVC frameworks for WordPress
    1. WP MVC – Provides a singleton object and eliminates the metadata bottleneck by providing tables indexed by post IDs.
    2. Tina MVC
  2. _s Theme – Use Automattic’s Blank Theme as a good starting point.

Automating frontend workflow by Aaron Jorbin (blog post, slides)

  1. Autojump – Jump to frequently used directories
  2. Commander.js (nodejs) – Script working with CLI
  3. watch (nodejs) – Watch files/dirs
  4. mockjax – Fake your ajax calls (good for protyping or testing un-related, yet dependent functionality)
  5. Travis CI – continuous integration service (wordpress plugin tests)
  6. Glue – generate css sprites

Microdata for SEO by Dave Ross

  1. Add itemprop, itemscope, etc to any identifiable schema
  2. Google Rich Snippets Tool – Test your microdata
  3. Examples: SiteNavigation element for navigation, Blog element for blog posts, etc
  4. Some quick tidbits: Bing rates sites with microdata higher than sites without, and Google uses the microdata in search results

Enterprise WordPress by Jake Goldman (1up)

  1. Sites to show clients: showcase, WordPress VIP
  2. Maintaining a beautiful WordPress admin

Shortcodes by Jon Bishop

  1. Use oembed rather than plugins to support embedding media from sites like youtube, facebook, etc

Codex by Erick Hitler

  1. Use santize_* functions to save to db: santize_text_field(), sanitize_title()
  2. Use esc_* functions to show data to user (esc_url_raw() is the exception, it is the opposite of esc_url())

Javascript hooks by Luke Gedeon (1up)

  1. Javascript custom events are coming, they will provide functionality similar to WordPress’ action and filter hooks (list of hooks)
Passion, Programming

Command line python script to get context lines on a search string

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grep -B and -B flags don’t work when grep is used on the command line with readline support. So I created this little script that does work on the command line. use -h flag to learn. Here’s how I’ve used it:

ls -al | ./printcontext.py -b 1 -a 1 -d test.txt

This finds the test.txt file and prints the 2 files around it.


#!/usr/bin/python
# print context when using a python script with readline support (command line piping)
# by inderpreetsingh.com

import sys, re
from optparse import OptionParser

def main():
    usage = "usage: %prog [options] needle"
    parser = OptionParser(usage)
    parser.add_option("-b", "--before", type="int", dest="before", default=0,
            help='Before context lines (a la grep)')
    parser.add_option("-a", "--after", type="int", dest="after", default=0,
            help='After context lines')
    parser.add_option("-d", "--debug", action="store_true", dest="debug", default=False,
            help='Debug information.')

    #Not implemented
    #parser.add_option("-o", "--output", type="string", dest="output")
    
    (options, args) = parser.parse_args()
    
    if len(args) != 1:
        parser.error("Specify what you want to search")
    
    needle = args[0]
    if options.debug:
        print "\nNeedle: %s\nBefore context lines: %s\nAfter context lines: %s\n" % (needle, options.before, options.after)
    

    lines = sys.stdin.readlines()
    lines = [x.strip() for x in lines]
    
    lastline = ''
    i = 0
    for line in lines:
        if needle in line:
#        if re.search(needle, line):
            first = max(0, i - options.before)
            last = min(len(lines), i + options.after + 1)
            
            if options.debug:
                print "Found '%s' on line %d, printing line %d to %d" % (needle, i, first, last)
                
            for println in lines[first:last]:
                print println
            print ""
        lastline = line
        i += 1

if __name__ == "__main__":
    main()
Passion

Include admin scripts/styles in WordPress plugin

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There are two ways of including custom scripts/styles in an admin page for a WordPress 3 plugin.

Solution 1 (Deprecated):


$slug = add_submenu_page('myplugin.php', 'My Plugin', 'My Plugin', 'upload_files', __FILE__, 'myplugin_options');

add_action('admin_print_scripts-'. $slug, 'myplugin_enqueue_admin_scripts');
add_action('admin_print_styles-'. $slug, 'myplugin_enqueue_admin_styles');

function myplugin_enqueue_admin_scripts($suffix) {
	$plugin_path = plugin_dir_url(__FILE__) . 'resources/';
	wp_enqueue_script('jquery.js', $plugin_path . 'jquery.pack.js');
}

function myplugin_enqueue_admin_styles($suffix) {
	$plugin_path = plugin_dir_url(__FILE__) . 'resources/';
	wp_enqueue_style('jquery.css', $plugin_path . 'jquery.css');
}

Solution 2 (recommended):

$slug = add_submenu_page('myplugin.php', 'My Plugin', 'My Plugin', 'upload_files', __FILE__, 'myplugin_options');

add_action('admin_enqueue_scripts', 'myplugin_enqueue_admin_scripts');


function myplugin_enqueue_admin_scripts($hook_suffix) {
	if ($hook_suffix == 'myplugin/slug') {
		$plugin_path = plugin_dir_url(__FILE__) . 'resources/';
		wp_enqueue_script('jquery.js', $plugin_path . 'jquery.pack.js');
		wp_enqueue_style('jquery.css', $plugin_path . 'jquery.css');
	}
}