KAPISH::Blog » PHP http://www.jayminkapish.com About Me and Wordpress Wed, 14 Jul 2010 18:51:12 +0000 http://wordpress.org/?v=3.0-alpha en hourly 1 Parent Child Theme – Easiest Way! http://www.jayminkapish.com/2009/08/07/parent-child-theme-easiest-way/ http://www.jayminkapish.com/2009/08/07/parent-child-theme-easiest-way/#comments Sat, 08 Aug 2009 01:46:10 +0000 Jaymin Patel http://blog.kapish.co.in/?p=114 This solution will work for you if you want your child theme have fewer templates and if any template is missing, it should not break your blog but should go to parent theme and load it.

And a few important things to set,
1) parent theme folder name
2) child theme folder name
3) Template set in child theme style.css must match parent theme folder name

Because child theme name and Template set in child theme style.css are stored in options table.

So I started looking into wordpress core files

wp-includes/template-loader.php
wp-includes/theme.php

These files load templates from active theme on your blog.

What parent theme must have
Your parent theme must have all template files necessary for any typical wordpress theme and parent style.css must have these lines

/*
Theme Name: Parent Theme
Theme URI: Your Blog URL
Description: My Parent Theme
Version: 0.1
Author: Your Name
Author URI: mailto:your_email_goes_here
*/

What child theme must have

style.css must have these lines where my_child_theme must be the name of child theme folder and my_parent_theme must be the name of parent theme folder.

/*
Theme Name: my_child_theme
Theme URI: Your Blog URL
Description: My Child Theme
Version: 0.1
Author: Your Name
Author URI: mailto:your_email_goes_here
Template: my_parent_theme
*/

and screenshot.png and functions.php

functions.php should add_filter to ‘home_template’

add_filter('home_template', 'load_child_home_template');

I am going to take home/index template as an example here. Lets say child theme is having these files. What does this mean? This means you want index.php/home.php loaded from child theme and everything else should come from parent theme.
1) style.css
2) screenshot.png
3) index.php or home.php
4) functions.php

wp-includes/theme.php has

function get_home_template() {
$template = '';
if ( file_exists(TEMPLATEPATH . "/home.php") )
$template = TEMPLATEPATH . "/home.php";
elseif ( file_exists(TEMPLATEPATH . "/index.php") )
$template = TEMPLATEPATH . "/index.php";
return apply_filters('home_template', $template);
}

Wordpress applies filters at the end and we are going to take advantage of it.

child theme functions.php must have this function as well

function load_child_home_template($template) {
if(empty($template)) {
$template = 'index.php'; /* if you have home.php, replace index.php with home.php */
}
return check_child_template($template);
}
function check_child_template($template) {
$template_file_name = basename($template);
$template_option = get_option('template'); /* has 'my_parent_theme' */
$current_theme_option = get_option('current_theme'); /* has 'my_child_theme' */
$theme_root = get_theme_root();
$child_template_root = $theme_root . '/' . $current_theme_option;
$child_template = $child_template_root . '/' . $template_file_name;
$parent_template_root = $theme_root . '/' . $template_option;
$parent_template = $parent_template_root . '/' . $template_file_name;
if(file_exists($child_template)) {
return $child_template; /* if child theme has index.php/home.php, load it */
}
else if(file_exists($parent_template)) { /* if child is missing index.php/home.php, load index.php/home.php from parent */
return $parent_template;
}
return $template;
}

You may want to put some html comments in parent theme index.php/home.php and child theme index.php/home.php to debug which theme is serving home page by looking into source code.

More on themes on Wordpress Codex

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]]> http://www.jayminkapish.com/2008/03/06/joomla-or-wordpress/feed/ 0 Migrate Tags from UTW Tags to Wordpress 2.3 Terms http://www.jayminkapish.com/2008/02/07/migrate-from-utw-tags-to-wordpress-23-terms/ http://www.jayminkapish.com/2008/02/07/migrate-from-utw-tags-to-wordpress-23-terms/#comments Thu, 07 Feb 2008 16:45:36 +0000 Jaymin Patel http://blog.kapish.co.in/2008/02/07/migrate-from-utw-tags-to-wordpress-23-terms/ I was running wordpress 2.0.5 since 2 years and did not get time to upgrade to Wordpress 2.3.

So I decided last week to upgrade to Wordpress 2.3 and I did. I upgrade the same way how wordpress advice us here.

After installation, I did notice it has migrated my categories tables to wordpress 2.3 Terms tables but nothing migrated from Tags tables. I was surprised! Did I make any mistake? Then it comes into my mind, it is Ultimate Tag Warrior plugin, which has created those tables for me not Wordpress.

Now I had to migrate those tags from Tags table to Terms tables. So I wrote a script that does that job for me. I thought let me make that available to you, if someone would like to extend the script and build a smart plugin!

I would like you to read this before you use this script:

  1. Take backup of your database. It is not going to delete anything in the database though.
  2. Make sure you have Tags tables from Ultimate Tag Warrior in your database.
  3. Since Unique index created on slug column in Terms table, this script will add ‘2′ add the end of tag if any duplicate key/slug found in the Terms table.
  4. Set MySQL Connection parameters in this file.
  5. Upload it to your server and run it. Just run it once!
  6. Do no forget to share your feedback via comments!

If you would like to look at it and review/install, please download PHP Code here.

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]]> http://www.jayminkapish.com/2008/02/07/migrate-from-utw-tags-to-wordpress-23-terms/feed/ 9 Wordpress Database Schema http://www.jayminkapish.com/2008/01/18/wordpress-database-schema/ http://www.jayminkapish.com/2008/01/18/wordpress-database-schema/#comments Fri, 18 Jan 2008 18:29:20 +0000 Jaymin Patel http://blog.kapish.co.in/2008/01/18/wordpress-database-schema/ Wordpress 3.0 Database Schema is up on Wordpress site.

Take a look at the following older versions.

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