Ajouter le nom de la classe à la vignette du message

Oui,vouspouvezpasser la classe que vous souhaitez utiliser à the_post_thumbnail() dans le cadre de l'argument des attributs,parexemple <?php the_post_thumbnail('thumbnail', array('class' => 'your-class-name')); ?>

Réf: http://codex.wordpress.org/Function_Reference/the_post_thumbnail#Styling_Post_Thumbnails

Yep - you can pass the class you want to use to the_post_thumbnail() as part of the attributes argument, for example <?php the_post_thumbnail('thumbnail', array('class' => 'your-class-name')); ?>

Ref: http://codex.wordpress.org/Function_Reference/the_post_thumbnail#Styling_Post_Thumbnails

Vouspouvezfiltrer ces classes.

 function alter_attr_wpse_102158($attr) {
  remove_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158');
  $attr['class'] .= ' new-class';
  return $attr;
}
add_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158'); 
 

Ajoutez lefiltrejuste avant d'appeler the_post_thumbnail.Lefiltre se supprimera automatiquement.

C'est unpeu de cheminpour y arrivermais the_post_thumbnail utilise get_the_post_thumbnail qui utilise wp_get_attachment_image qui applique cefiltre.

You can filter those classes.

function alter_attr_wpse_102158($attr) {
  remove_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158');
  $attr['class'] .= ' new-class';
  return $attr;
}
add_filter('wp_get_attachment_image_attributes','alter_attr_wpse_102158'); 

Add the filter just before you call the_post_thumbnail. The filter will remove itself automatically.

It is a bit of trek to get there but the_post_thumbnail uses get_the_post_thumbnail which uses wp_get_attachment_image which applies that filter.

Votrebalise d'imagen'apas de classe vous venez d'écrire ce code <?php the_post_thumbnail(); ?>mais votrebalise d'image a la classe que vous venez d'écrire ce code

 <?php the_post_thumbnail('thumbnail', array(
'class' => 'class_name'

)); ?>
 

Your image tag have no class you just write this code <?php the_post_thumbnail(); ?> but your image tag have class you just write this code

<?php the_post_thumbnail('thumbnail', array(
'class' => 'class_name'

)); ?>