Checkbox that pulls content from a custom type post

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Checkbox that pulls content from a custom type post

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#1 by (3 votes)

2

I have a custom post type of meshes (here all products meshes will be registered) and I have another custom post type of products (where all the products will be listed).

What I'd like to do: In this product's custom post type, you have a custom checkbox field that lists all of the custom post type items. How can I do this?

NOTE: I do not want to use categories.

html css wordpress

asked by anonymous 21.05.2014 / 20:05

1 answer

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score 3 · Answer 1

The way to do this is to add a custom Meta Box with add_meta_box() and inside the box list the posts of the your CPT using get_posts() . And the information will be saved as a Custom Field using update_post_meta() . Note that if Custom Field starts with an underscore ( _NomeDoField ), it is invisible in the default custom fields field.

In this example, the Meta Box is added to the Normal Posts and the listing is of the CPT Portfolio entries. Adjust as needed to the locations indicated.

<?php
/**
 * Plugin Name: (SOPT) Listagem de CPT em Meta Box
 * Plugin URI: http://pt.stackoverflow.com/a/16674/201
 * Author: brasofilo
 */

add_action( 'add_meta_boxes', 'add_box_sopt_16606' );
add_action( 'save_post', 'save_postdata_sopt_16606', 10, 2 );

function add_box_sopt_16606() 
{
    add_meta_box(
        'sectionid_sopt_16606',
        __( 'CPT Associado' ), 
        'cpt_box_sopt_16606',
        'post', # <--- Ajuste CPT
        'side'
    );
}

function cpt_box_sopt_16606() 
{
    global $post;

    // Puxar todos as entradas do CPT
    $args = array(
        'numberposts' => -1,
        'post_type'   => 'portfolio', # <--- Ajuste CPT
        'post_status' => 'publish,future'
    );
    $get_posts = get_posts( $args );

    // Valor gravado ou default
    $saved = get_post_meta( $post->ID, '_cpt_associado', true );
    if( !$saved )
        $saved = array();

    // Segurança
    wp_nonce_field( plugin_basename( __FILE__ ), 'noncename_sopt_16606' );

    if( $get_posts )
    {
        foreach ( $get_posts as $cpt_post ) 
        {
            printf(
                '<input type="checkbox" name="_cpt_associado[%1$s]" value="%1$s" id="_cpt_associado[%1$s]" %3$s />'.
                '<label for="_cpt_associado[%1$s]"> %2$s ' .
                '</label><br>',
                esc_attr( $cpt_post->ID ),
                esc_html( $cpt_post->post_title ),
                checked( in_array( $cpt_post->ID, $saved ), true, false )
            );
        }
    }
    else
        echo '<strong>O CPT não tem entradas</strong>';
}


function save_postdata_sopt_16606( $post_id, $post_object ) 
{
    // Não é nosso tipo, sair fora
    if ( 'post' !== $post_object->post_type ) # <--- Ajuste CPT
        return;

    // Fazendo auto save?
    if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) 
        return;

    // Segurança
    if ( 
        !isset( $_POST['noncename_sopt_16606'] ) 
        || !wp_verify_nonce( $_POST['noncename_sopt_16606'], plugin_basename( __FILE__ ) ) 
        )
        return;

    // Gravar ou deletar
    if ( isset( $_POST['_cpt_associado'] )  )
        update_post_meta( $post_id, '_cpt_associado', $_POST['_cpt_associado'] );
    else 
        delete_post_meta( $post_id, '_cpt_associado' );
}

Result

Codeadaptedfrom List of Posts in a Custom Field