WortdPress Child themes: Why and How

Daughter Themes (aka: Child-Themes)And why you need to know about them

Why AndHo

No theme will fit all sites

You can’t apply an update to atheme without losing yourchanges

Creating whole themes is hard

Daughter themes are easy

You can use framework themes to save effort

You can brand a theme for your client

The code needed/*Theme Name: You Company Theme.Theme URI: http://bearne.caAuthor: Paul BearneTemplate: twentyelevenAuthor URI: http://bearne.ca/Description: This is the special theme I created just for your company’swebsite.Version: 1.0License: GNU General Public LicenseLicense URI: license.txtTags: dark, light, white, black, gray, one-column, two-columns, left-sidebar,right-sidebar, fixed-width, flexible-width, custom-background, custom-colors,custom-header, custom-menu, editor-style, featured-image-header, featured-images, full-width-template, microformats, post-formats, rtl-language-support,sticky-post, theme-options, translation-ready*/@import url(../twentyeleven/style.css);

How to install it Save as style.css In a new folder called "theme-name" ... for example: " YourCompanyTheme" Create a zip of the folder - newTheme.zip (this zip needs a subfolder with the style.css in it ) Upload it

Or FTP it Upload it to the Themes folder in a new folder which follows to show the theme folder as: YourCompanyTheme

Add a thumbnail Upload an image screenshot.png

Replacing template files Copy just the files from parent theme that you need to change to you daughter folder and edit them. WordPress looks in the daughter folder first and loads the file if found

functions.php WordPress will load BOTH function.php files child function.php then the parent function.php So you only need to add the extra/replacement functions Example:<?phpadd_action( after_setup_theme, CompanyNameTheme_setup );if ( ! function_exists( CompanyNameTheme_setup ) ):/** * Sets up theme defaults and registers support for various WordPress features. */function CompanyNameTheme_setup() { // The default header text color define( HEADER_TEXTCOLOR, fff ); // By leaving empty, we allow for random image rotation. define( HEADER_IMAGE, );}endif; // CompanyNameTheme setup

Page Templates Custom layout for pages Good for Coming soon Landing pages Galleries etc.<?php/*Template Name: Homepage*/?>

Template HierarchyIf your blog is at http://example.com/blog/ and a visitor clicks on a link to a category page like http://example.com/blog/category/your-cat/WordPress looks for a template file in the current Themes directory that matches the categorys ID. If the categorys ID is 4, WordPress looks for a template file named category-4.php. If it is missing, WordPress next looks for a generic category template file, category.php. If this file does not exist either, WordPress looks for a generic archive template, archive.php. If it is missing as well, WordPress falls back on the main Theme template file, index.php. http://codex.wordpress.org/Template_Hierarchy

Notes You can’t have a child of a child (1 layer only) There is a very small performance hit

Some links http://codex.wordpress.org/Child_Themes http://themeshaper.com/modify-wordpress- themes/ http://wpfirstaid.com/2011/04/wordpress-child- themes/ http://themeshaper.com/modify-wordpress- themes/ @pbearne

WortdPress Child themes: Why and How

by Paul Bearne on Sep 30, 2012

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