How to add CSS class to custom logo?
-
16-04-2021 - |
문제
I enabled custom-logo
for my theme and have it printed with <?php the_custom_logo(); ?>
into the header. Is there any chance to simply add some more classes to this image directly? Per default it only comes with custom-logo
.
해결책
WordPress provide a filter hook to custom logo customization. The hook get_custom_logo
is the filter. To change logo class, this code may help you.
add_filter( 'get_custom_logo', 'change_logo_class' );
function change_logo_class( $html ) {
$html = str_replace( 'custom-logo', 'your-custom-class', $html );
$html = str_replace( 'custom-logo-link', 'your-custom-class', $html );
return $html;
}
Reference: How to change wordpress custom logo and logo link class
다른 팁
Here's one suggestion how we might try to add classes through the wp_get_attachment_image_attributes
filter (untested):
add_filter( 'wp_get_attachment_image_attributes', function( $attr )
{
if( isset( $attr['class'] ) && 'custom-logo' === $attr['class'] )
$attr['class'] = 'custom-logo foo-bar foo bar';
return $attr;
} );
where you adjust the classes to your needs.
As you found yourself the_custom_logo
relies on get_custom_logo
, which itself calls wp_get_attachment_image
to add the custom-logo
class. The latter function has a filter, wp_get_attachment_image_attributes
which you can use to manipulate the image attributes.
So what you could do is build a filter that checks if the custom-logo
class is there and if yes add more classes.
Just for anyone else that's looking for solutions. I found this, which I find much clearer than the accepted answer.
Plus it gives simple ways to change the URL on the link as well! Just a little more detailed than the accepted answer.
add_filter( 'get_custom_logo', 'add_custom_logo_url' );
function add_custom_logo_url() {
$custom_logo_id = get_theme_mod( 'custom_logo' );
$html = sprintf( '<a href="%1$s" class="custom-logo-link" rel="home" itemprop="url">%2$s</a>',
esc_url( 'www.somewhere.com' ),
wp_get_attachment_image( $custom_logo_id, 'full', false, array(
'class' => 'custom-logo',
) )
);
return $html;
}
I think I found one answer. But I really wonder if this is the right way? It feels a little bit dirty somehow: I simply copied the logo related parts from wp-includes/general-template.php into my theme's functions.php and renamed the functions with some custom classes added:
function FOOBAR_get_custom_logo( $blog_id = 0 ) {
$html = '';
if ( is_multisite() && (int) $blog_id !== get_current_blog_id() ) {
switch_to_blog( $blog_id );
}
$custom_logo_id = get_theme_mod( 'custom_logo' );
if ( $custom_logo_id ) {
$html = sprintf( '<a href="%1$s" class="custom-logo-link" rel="home" itemprop="url">%2$s</a>',
esc_url( home_url( '/' ) ),
wp_get_attachment_image( $custom_logo_id, 'full', false, array(
'class' => 'custom-logo FOO-BAR FOO BAR', // added classes here
'itemprop' => 'logo',
) )
);
}
elseif ( is_customize_preview() ) {
$html = sprintf( '<a href="%1$s" class="custom-logo-link" style="display:none;"><img class="custom-logo"/></a>',
esc_url( home_url( '/' ) )
);
}
if ( is_multisite() && ms_is_switched() ) {
restore_current_blog();
}
return apply_filters( 'FOOBAR_get_custom_logo', $html );
}
function FOOBAR_the_custom_logo( $blog_id = 0 ) {
echo FOOBAR_get_custom_logo( $blog_id );
}