Theme function extensions

Bentivoglio · April 2015

I'm not an expert but for me the only way to extend the default theme functions is to place if(!function_exists('function-name')) { in the main theme_functions.php and then add my function in the child.

It would be great if this could be already in place by default

Is this correct or is there another way to do what i need to do?

Albert · April 2015

Hey,

please take a look at another topic where we explained how it exactly works http://forum.muffingroup.com/betheme/discussion/3128/theme-shortcodes-php-doesn-t-work-in-betheme-child

Also please take a look at https://codex.wordpress.org/Child_Themes where all information about child theme are.

Thanks!

Bentivoglio · April 2015

Hi,
what I wrote to you is from the page you suggested me to take a look at https://codex.wordpress.org/Child_Themes
And that is:

TIP FOR THEME DEVELOPERS. The fact that a child theme’s functions.php is loaded first means that you can make the user functions of your theme pluggable —that is, replaceable by a child theme— by declaring them conditionally. E.g.:

if ( ! function_exists( 'theme_special_nav' ) ) {
    function theme_special_nav() {
        // Do something.
    }
}

In that way, a child theme can replace a PHP function of the parent by simply declaring it beforehand.

Albert · April 2015

Yes, this is it. So just wrap your function into the same "if" as you mentioned above and this should work.

Bentivoglio · April 2015

Hey are you kidding me or what?

It says: TIP FOR THEME DEVELOPERS.

That is what YOU need to put before every function in the theme functions.php

If I use that conditional in the child theme there is no way I can override the core function!

Albert · April 2015

No, we are not kidding at all. All functions or shortcodes included into theme that can be modified from child theme side are already wrapped into those functions. Only some functions that can't be touched are not wrapped. But if you want to modify those functions or shortcodes, YOU must edit from functions.php file which is included into child theme.

Thanks for understanding!

Theme function extensions

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