Comment définir une image sélectionnée (vignette) par URL d'image lors de l'utilisation de wp_insert_post ()?

Vouspouvez définir uneimage commeminiature depublication lorsqu'elle setrouve dans votrebibliothèquemultimédia. Pour ajouter uneimage dans votrebibliothèquemultimédia,vous devez latélécharger sur votre serveur. WordPress a déjà unefonctionpourmettre desimages dans votremédiathèque,vousn'avezbesoin que d'un script quitélécharge votrefichier.

Utilisation:

 Generate_Featured_Image( '../wp-content/my_image.jpg', $post_id );

// $post_id is Numeric ID... You can also get the ID with:
wp_insert_post()
 

Fonction:

 function Generate_Featured_Image( $image_url, $post_id  ){
    $upload_dir = wp_upload_dir();
    $image_data = file_get_contents($image_url);
    $filename = basename($image_url);
    if(wp_mkdir_p($upload_dir['path']))
      $file = $upload_dir['path'] . '/' . $filename;
    else
      $file = $upload_dir['basedir'] . '/' . $filename;
    file_put_contents($file, $image_data);

    $wp_filetype = wp_check_filetype($filename, null );
    $attachment = array(
        'post_mime_type' => $wp_filetype['type'],
        'post_title' => sanitize_file_name($filename),
        'post_content' => '',
        'post_status' => 'inherit'
    );
    $attach_id = wp_insert_attachment( $attachment, $file, $post_id );
    require_once(ABSPATH . 'wp-admin/includes/image.php');
    $attach_data = wp_generate_attachment_metadata( $attach_id, $file );
    $res1= wp_update_attachment_metadata( $attach_id, $attach_data );
    $res2= set_post_thumbnail( $post_id, $attach_id );
}
 

http://codex.wordpress.org/Function_Reference/wp_upload_dir

http://codex.wordpress.org/Function_Reference/wp_insert_attachment

MODIFIER: Ajout de la création de chemin

http://codex.wordpress.org/Function_Reference/wp_mkdir_p

You can set an image as post thumbnail when it is in your media library. To add an image in your media library you need to upload it to your server. WordPress already has a function for putting images in your media library, you only need a script that uploads your file.

Usage:

Generate_Featured_Image( '../wp-content/my_image.jpg', $post_id );

// $post_id is Numeric ID... You can also get the ID with:
wp_insert_post()

Function:

function Generate_Featured_Image( $image_url, $post_id  ){
    $upload_dir = wp_upload_dir();
    $image_data = file_get_contents($image_url);
    $filename = basename($image_url);
    if(wp_mkdir_p($upload_dir['path']))
      $file = $upload_dir['path'] . '/' . $filename;
    else
      $file = $upload_dir['basedir'] . '/' . $filename;
    file_put_contents($file, $image_data);

    $wp_filetype = wp_check_filetype($filename, null );
    $attachment = array(
        'post_mime_type' => $wp_filetype['type'],
        'post_title' => sanitize_file_name($filename),
        'post_content' => '',
        'post_status' => 'inherit'
    );
    $attach_id = wp_insert_attachment( $attachment, $file, $post_id );
    require_once(ABSPATH . 'wp-admin/includes/image.php');
    $attach_data = wp_generate_attachment_metadata( $attach_id, $file );
    $res1= wp_update_attachment_metadata( $attach_id, $attach_data );
    $res2= set_post_thumbnail( $post_id, $attach_id );
}

http://codex.wordpress.org/Function_Reference/wp_upload_dir

http://codex.wordpress.org/Function_Reference/wp_insert_attachment

EDIT: Added path creation

http://codex.wordpress.org/Function_Reference/wp_mkdir_p

Je voudrais améliorer la réponse de Robsen utilisant lesfonctions debase WP download_url et media_handle_sideload

 <?php
/**
* Downloads an image from the specified URL and attaches it to a post as a post thumbnail.
*
* @param string $file    The URL of the image to download.
* @param int    $post_id The post ID the post thumbnail is to be associated with.
* @param string $desc    Optional. Description of the image.
* @return string|WP_Error Attachment ID, WP_Error object otherwise.
*/
function Generate_Featured_Image( $file, $post_id, $desc ){
    // Set variables for storage, fix file filename for query strings.
    preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $file, $matches );
    if ( ! $matches ) {
         return new WP_Error( 'image_sideload_failed', __( 'Invalid image URL' ) );
    }

    $file_array = array();
    $file_array['name'] = basename( $matches[0] );

    // Download file to temp location.
    $file_array['tmp_name'] = download_url( $file );

    // If error storing temporarily, return the error.
    if ( is_wp_error( $file_array['tmp_name'] ) ) {
        return $file_array['tmp_name'];
    }

    // Do the validation and storage stuff.
    $id = media_handle_sideload( $file_array, $post_id, $desc );

    // If error storing permanently, unlink.
    if ( is_wp_error( $id ) ) {
        @unlink( $file_array['tmp_name'] );
        return $id;
    }
    return set_post_thumbnail( $post_id, $id );

}
 

I'd like to improve Robs answer by utilizing the WP core functions download_url and media_handle_sideload

<?php
/**
* Downloads an image from the specified URL and attaches it to a post as a post thumbnail.
*
* @param string $file    The URL of the image to download.
* @param int    $post_id The post ID the post thumbnail is to be associated with.
* @param string $desc    Optional. Description of the image.
* @return string|WP_Error Attachment ID, WP_Error object otherwise.
*/
function Generate_Featured_Image( $file, $post_id, $desc ){
    // Set variables for storage, fix file filename for query strings.
    preg_match( '/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $file, $matches );
    if ( ! $matches ) {
         return new WP_Error( 'image_sideload_failed', __( 'Invalid image URL' ) );
    }

    $file_array = array();
    $file_array['name'] = basename( $matches[0] );

    // Download file to temp location.
    $file_array['tmp_name'] = download_url( $file );

    // If error storing temporarily, return the error.
    if ( is_wp_error( $file_array['tmp_name'] ) ) {
        return $file_array['tmp_name'];
    }

    // Do the validation and storage stuff.
    $id = media_handle_sideload( $file_array, $post_id, $desc );

    // If error storing permanently, unlink.
    if ( is_wp_error( $id ) ) {
        @unlink( $file_array['tmp_name'] );
        return $id;
    }
    return set_post_thumbnail( $post_id, $id );

}

Essayez d'utiliser set_post_thumbnail() .

Éditépar Otto: Vous avez clarifié votre question,je vais donc clarifier la réponse donnéepar Chip.

Engros,vous devez également créer la «piècejointe»pour lemessage. Lorsqu'uneimageesttéléchargée dans lamédiathèque WordPress,uneentrée depublication spécialeest crééepourelle avec untype depiècejointe. Cettepiècejointeest liée à unmessage spécifique via l'identifiantpost_parent.

Donc,si vous connaissez l'ID de lapiècejointe,appeler set_post_thumbnail avec l'objet ou l'ID de l'articleet l'ID de lapiècejointe définira simplement l'indicateur deminiature de l'article.

Si vousn'avezpasencore créé lapiècejointe,vous devrez d'abord lefaire. Lemoyen leplus simple de lefaireest d'utiliser wp_insert_attachment() . Cettefonctionprend untableau de quelquesparamètres,lenom defichier (lefichier doit déjà être dans le répertoire detéléchargement approprié)et l'ID depublication dumessageparent auquel vous souhaitez attacher lapiècejointe.

Le simplefait detélécharger unfichieret de lejoindre à unmessagene fait rien automatiquement. Il s'agit simplement d'une sorte demécanisme de catégorisation. Lemécanisme degalerie,parexemple,utilise lesimagesjointes d'un articlepour créer la [galerie]pour cemessage. Une vignettepour un articlen'est que l'une desimagesjointes qui a été définie comme vignette.

Voustrouverezplus d'informations sur l'utilisation de wp_insert_attachment dans le codex (lien ci-dessus).

Try using set_post_thumbnail().

Edit by Otto: You clarified your question, so I'll clarify the response Chip gave.

Basically, you need to make the 'attachment' for the post as well. When an image is uploaded into the WordPress media library, a special post entry is made for it with a post type of attachment. This attachment is linked to some specific post via the post_parent identifier.

So if you know the ID of the attachment, then calling set_post_thumbnail with the post object or ID and the attachment ID will simply set the post thumbnail flag.

If you have not created the attachment yet, then you will need to do that first. Easiest way to do that is with wp_insert_attachment(). This function takes an array of a few parameters, the filename (the file must already be in the proper uploads directory), and the post ID of the parent post that you want to attach the attachment to.

Just having a file uploaded and attached to a post doesn't do anything automatically. This is simply a sort of categorization mechanism. The gallery mechanism, for example, uses the attached images of a post to build the [gallery] for that post. A thumbnail for a post is just one of the attached images which has be set to be the thumbnail.

More info on how to use wp_insert_attachment can be found in the codex (linked above).

set_post_thumbnail() est lameilleurefonctionpour cetteexigence.

Jepense que voustrouvez l'ID d'unepiècejointe via get_children() ou get_posts() . Le résultat a untableauet à l'intérieur de cetableau setrouve l'ID. L'exemple suivantpour lestests; J'espère que çamarche; écrire sanstests,uniquement sur scratch.

Pour vosbesoins,ilestimportant que vous changiez get_the_ID() avec votre post-ID; renvoyez l'ID de lapiècejointeet vouspouvez utiliserpour cela set_post_thumbnail().

 $attachments = get_children( 
    array(
        'post_parent' => get_the_ID(), 
        'post_type' => 'attachment', 
        'post_mime_type' => 'image'
    )
);
foreach ( $attachments as $attachment_id => $attachment ) {
    echo wp_get_attachment_image($attachment_id);
}
 

set_post_thumbnail() is the best function for this requirement.

I think, you find the ID of an attachment via get_children() or get_posts(). The result have an array and inside this array is the ID. The follow example for testing; i hope it works; write without tests, only on scratch.

For your requirement it is important, that you change get_the_ID() with your post-ID; return the ID of the Attachment and this can you use foth set_post_thumbnail().

$attachments = get_children( 
    array(
        'post_parent' => get_the_ID(), 
        'post_type' => 'attachment', 
        'post_mime_type' => 'image'
    )
);
foreach ( $attachments as $attachment_id => $attachment ) {
    echo wp_get_attachment_image($attachment_id);
}

Je viens detrouver çaet je l'ai rendubeaucoupplus simple,çamarchemaisje ne suispas unnettoyeur de sécurité

 if(!empty($_FILES)){
    require_once( ABSPATH . 'wp-admin/includes/post.php' );
    require_once( ABSPATH . 'wp-admin/includes/image.php' );
    require_once( ABSPATH . 'wp-admin/includes/file.php' );
    require_once( ABSPATH . 'wp-admin/includes/media.php' );

    $post_ID = "your post id!";

    $attachment_id = media_handle_upload( 'file', $post_ID );
    set_post_thumbnail( $post_ID, $attachment_id );
}
 

simple ou quoi?après avoir obtenu lesbonsfichiers,wordpressgérera lemédiaet letéléchargera,puis le définira commeminiature.

Just found this and made it much simpler, works but I'm no security scrubber

if(!empty($_FILES)){
    require_once( ABSPATH . 'wp-admin/includes/post.php' );
    require_once( ABSPATH . 'wp-admin/includes/image.php' );
    require_once( ABSPATH . 'wp-admin/includes/file.php' );
    require_once( ABSPATH . 'wp-admin/includes/media.php' );

    $post_ID = "your post id!";

    $attachment_id = media_handle_upload( 'file', $post_ID );
    set_post_thumbnail( $post_ID, $attachment_id );
}

simple or what? after getting the right files, wordpress will handle the media and upload it, then set it as a thumbnail.