Aggiungi il nome della classe alla miniatura del post

Sì,puoipassare la classe che desideri utilizzare a the_post_thumbnail() comeparte dell'argomento attributi,adesempio <?php the_post_thumbnail('thumbnail', array('class' => 'your-class-name')); ?>

Rif: 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

Puoifiltrare queste classi.

 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'); 
 

Aggiungiilfiltro subitoprima di chiamare the_post_thumbnail.Ilfiltro si rimuoverà automaticamente.

È unpo 'difficile arrivarci,ma the_post_thumbnail utilizza get_the_post_thumbnail che utilizza wp_get_attachment_image che applica quelfiltro.

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.

Iltuotagimmaginenon ha una classe,scrivi solo questo codice <?php the_post_thumbnail(); ?>mailtuotagimmagine ha una classe,scrivi semplicemente questo codice

 <?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'

)); ?>