OBTENGA el extracto por ID

Hola @Robin I. Knight:

Veo get_the_excerpt() como unafunción con diseño heredado.Amedida queel uso de WordPress ha crecido,haymuchos casos de usonuevosen los quenoencaja,pero sí lo hacen lasfuncionesmásnuevaspara obtener datos diferentes.Unejemploesel uso ahorafrecuente de unamatriz $args de opciones defunción.

Peroesfácil de solucionarpara susnecesidades.Aquí hay unafunción alternativa quepuede usar y quepuede colocaren cualquier lugar del archivo functions.php de sutema:

 function robins_get_the_excerpt($post_id) {
  global $post;  
  $save_post = $post;
  $post = get_post($post_id);
  $output = get_the_excerpt();
  $post = $save_post;
  return $output;
}
 

No lo heprobado,peroestoybastante seguro de que lo hicebien.Siestono satisface susnecesidades,porfavorexplique ytal vezpueda hacer otras sugerencias.

Hi @Robin I. Knight:

I view get_the_excerpt() as a function with legacy design. As WordPress usage has grown there are many newer use-cases where it doesn't fit but where the newer functions for getting different data do. One example is the now frequent use of an $args array of function options.

But it's easy to fix for your needs. Here's an alternative function you can use which you can put anywhere in your theme's functions.php file:

function robins_get_the_excerpt($post_id) {
  global $post;  
  $save_post = $post;
  $post = get_post($post_id);
  $output = get_the_excerpt();
  $post = $save_post;
  return $output;
}

I've not tested it but am pretty sure I got it right. If this doesn't meet your needs please elaborate and maybe I can make other suggestions.

Lamecánica delextractoesextremadamente confusa.Noes una respuestaprecisa a supregunta,peroen general,sinecesita crearetiquetas deplantilla,específicaspara Loop,trabajar con lamatriz devueltapor get_posts(),puedeemular Loop deestamanera:

 $stories = get_posts(); 

foreach ($stories as $post) {

    setup_postdata($post);

    // stuff
}
wp_reset_postdata();
 

The mechanics of excerpt are extremely confusing. It is not precise answer to your question but in general if you need to make template tags, specific to Loop, work with array returned by get_posts() you can emulate Loop like this:

$stories = get_posts(); 

foreach ($stories as $post) {

    setup_postdata($post);

    // stuff
}
wp_reset_postdata();

Hay unanuevafunción desde la 3.3.0: wp_trim_words

Loestoy usandofuera del ciclo de la siguientemanera:

  <?php if ( $post_id ) {
 $post = get_post( $post_id );
 if ( $post ) { ?>
     <h2><?php echo $post->post_title; ?></h2>
     <p><em><?php echo wp_trim_words( $post->post_content ); ?></em></p>
     <p><strong>This article can only be read by subscribers.</strong></p>
 <?php } } ?>
 

Estono debe confundirse con wp_trim_excerpt que aparentemente solofunciona dentro del ciclo,ya que llama athe_content ()internamente.

There is a new function since 3.3.0: wp_trim_words

I'm using it outside the loop as follows:

 <?php if ( $post_id ) {
 $post = get_post( $post_id );
 if ( $post ) { ?>
     <h2><?php echo $post->post_title; ?></h2>
     <p><em><?php echo wp_trim_words( $post->post_content ); ?></em></p>
     <p><strong>This article can only be read by subscribers.</strong></p>
 <?php } } ?>

This is not to be confused with wp_trim_excerpt that apparently only works within the loop, since it calls the_content() internally.

Solopara agregar algo a la respuesta de MikeSchinkel,quepor alguna razónnofuncionaríaparamí.Tuve que agregar la línea setup_postdatapara quefuncione.

 function get_the_excerpt( $post_id ){

  global $post;  
  $save_post = $post;
  $post = get_post($post_id);
  setup_postdata( $post ); // hello
  $output = get_the_excerpt();
  $post = $save_post;
  return $output;
 

}

Supongo que siestá usandoestofuera del ciclo,entoncesno deberíainterferir con otros setup_postdata.

Saludos

Just to add to MikeSchinkel's answer, which for some reason wouldn't work for me. I had to add the setup_postdata line to make it work.

function get_the_excerpt( $post_id ){

  global $post;  
  $save_post = $post;
  $post = get_post($post_id);
  setup_postdata( $post ); // hello
  $output = get_the_excerpt();
  $post = $save_post;
  return $output;

}

I'm assuming if you're using this outside the loop then it shouldn't interfere with other setup_postdata going on.

Cheers

Basándoseen la respuesta de @ Maxime,¿funcionaríaesto?

 $post = get_post( $id );

$excerpt = ( $post->post_excerpt ) ? $post->post_excerpt : $post->post_content;
 

Meparecebastante sencillo,perome pregunto sime estoyperdiendo algo.

Building on @Maxime's answer, would this work?

$post = get_post( $id );

$excerpt = ( $post->post_excerpt ) ? $post->post_excerpt : $post->post_content;

It seems straight forward enough to me, but I'm wondering if I'm missing something.

Si TODAS tuspublicacionestienen laetiqueta <!--more-->,entoncespuedes usar lo siguiente contu código anterior:

 $sjc_excerpt = explode( '<!--more-->', $post->post_content); 
echo wpautop( $sjc_excerpt[0] );
 

Por supuesto,sitienespublicaciones quenotienen laetiqueta <!--more-->,semostraránen sutotalidad.Funcionaen mi situación,peronoparatodos ...

If ALL your posts have the <!--more--> tag, then you can use the following with your code above:

$sjc_excerpt = explode( '<!--more-->', $post->post_content); 
echo wpautop( $sjc_excerpt[0] );

Of course if you have any posts that don't have the <!--more--> tag, they'll be shown in their entirety. Works in my situation, but not for all...

Veo get_the_excerpt() como unafunción con diseño heredado.Amedida queel uso de WordPress ha crecido,haymuchos casos de usonuevosen los quenoencaja,pero sí lo hacen lasfuncionesmásnuevaspara obtener datos diferentes.Unejemploesel uso ahorafrecuente de unamatriz $args de opciones defunción.

Peroesfácil de solucionarpara susnecesidades.Aquí hay unafunción alternativa quepuede usar y quepuede colocaren cualquier lugar del archivo functions.php de sutema:

 function robins_get_the_excerpt($post_id) {
   global $post;  
   $save_post = $post;
   $post = get_post($post_id);
   $output = get_the_excerpt();
   $post = $save_post;
   return $output;
}
 

Solopara agregar algo a la respuesta de MikeSchinkel,quepor alguna razónnofuncionaríaparamí.Tuve que agregar la línea setup_postdatapara quefuncione.

I view get_the_excerpt() as a function with legacy design. As WordPress usage has grown there are many newer use-cases where it doesn't fit but where the newer functions for getting different data do. One example is the now frequent use of an $args array of function options.

But it's easy to fix for your needs. Here's an alternative function you can use which you can put anywhere in your theme's functions.php file:

function robins_get_the_excerpt($post_id) {
   global $post;  
   $save_post = $post;
   $post = get_post($post_id);
   $output = get_the_excerpt();
   $post = $save_post;
   return $output;
}

Just to add to MikeSchinkel's answer, which for some reason wouldn't work for me. I had to add the setup_postdata line to make it work.

Estees unpequeñoesquema de dos líneas que usomucho utilizando wp_trim_words . Constantementeme encuentronecesitando la abreviatura y leomásfuncionalidadesfuera del ciclo. Alguienmáspuedeencontraresto útil. Entoncesestoes lo que usopara:

     //Get Post Object
    $dapost = get_post(POST_ID);              
    //Get the Execerpt
    $my_excerpt = wp_trim_words( apply_filters( "the_excerpt", get_the_excerpt($dapost) ? get_the_excerpt($dapost) : $dapost->post_content  ), "20", "<a href='$dapost->guid'> ".__('Get More Stuff', 'translation')."</a>" );
 

     $dapost = get_post(POST_ID);    
    apply_filters( "the_excerpt", get_the_excerpt($dapost) ? get_the_excerpt($dapost) : $dapost->post_content
 

     "20"
 

    "<a href='$dapost->guid'> ".__('Get More Stuff', 'translation')."</a>"