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I am a theme author and the theme I made is used in a multisite environment. I have added the custom_background feature to this theme, with a default image and everything works as expected : the user can change the image and see the result live is the Theme Customizer before putting it online.

Here is the custom_background declaration:

add_action('after_setup_theme', 'user83643_theme_features');
function user83643_theme_features(){
    add_theme_support( 'custom-background' , array(
        'default-color' => '1878A0',
        'default-image' => get_template_directory_uri() . '/img/default.jpg',
        'wp-head-callback' => '__return_false',
    ));
}

However, when a fresh new site is created in the network, the default image does not appear in the frontend. I can see it in the backend in the theme customizer, but I have to save it once to activate it on the frontend : get_theme_mod('background_image') returns false before I save it once.

Any idea how to save the default image (and color) in the database upon the first theme activation ?

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1 Answer

up vote 0 down vote accepted

I assume you mean "get_theme_mod('background_image') returns false" before I "save it once to activate it"

If that is the case, get_theme_mod accepts a default parameter. Check the Codex:

$name (string) (required) Theme modification name.

    Default: None 

$default (boolean|string) (optional)

    Default: false

Pass your default image as the second parameter to that function and you should be set.

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This is exactly what I was looking for ! Thanks ! –  Fabien Quatravaux Mar 8 '13 at 15:05
    
I have edited my question following your recommendations to make it clearer. –  Fabien Quatravaux Mar 8 '13 at 15:07
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