File properties/class-papi-property-post.php

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<?php

/**
 * Post property that can handle relationship
 * between posts.
 */
class Papi_Property_Post extends Papi_Property {

    /**
     * The convert type.
     *
     * @var string
     */
    public $convert_type = 'object';

    /**
     * Format the value of the property before it's returned
     * to WordPress admin or the site.
     *
     * @param  mixed  $value
     * @param  string $slug
     * @param  int    $post_id
     *
     * @return array
     */
    public function format_value( $value, $slug, $post_id ) {
        if ( is_numeric( $value ) && intval( $value ) !== 0 ) {
            return get_post( $value );
        }

        return $this->default_value;
    }

    /**
     * Get default settings.
     *
     * @return array
     */
    public function get_default_settings() {
        return [
            'labels'        => [
                'select_post_type' => __( 'Select Post Type', 'papi' ),
                'select_item'      => __( 'Select %s', 'papi' )
            ],
            'layout'        => 'single', // single or advanced
            'placeholder'   => '',
            'post_type'     => 'post',
            'select2'       => true,
            'query'         => []
        ];
    }

    /**
     * Get labels from post types.
     *
     * @return array
     */
    protected function get_labels() {
        $results = [];

        foreach ( $this->get_post_types() as $post_type ) {
            if ( post_type_exists( $post_type ) ) {
                $post_type_object    = get_post_type_object( $post_type );
                $results[$post_type] = $post_type_object->labels->menu_name;
            }
        }

        return $results;
    }

    /**
     * Get post types.
     *
     * @return array
     */
    protected function get_post_types() {
        return papi_to_array( $this->get_setting( 'post_type' ) );
    }

    /**
     * Get posts.
     *
     * @param  string $post_type
     *
     * @return array
     */
    protected function get_posts( $post_type = '' ) {
        $query  = $this->get_setting( 'query' );
        $layout = $this->get_setting( 'layout' );

        // By default we add posts per page key with the value -1 (all).
        if ( ! isset( $query['posts_per_page'] ) ) {
            $query['posts_per_page'] = -1;
        }

        if ( $layout !== 'advanced' ) {
            $post_type = $this->get_post_types();
        } else if ( empty( $post_type ) ) {
            $post_type = $this->get_post_types();
            $post_type = array_shift( $post_type );
        }

        // Prepare arguments for WP_Query.
        $args = array_merge( $query, [
            'post_type'              => $post_type,
            'no_found_rows'          => true,
            'update_post_meta_cache' => false,
            'update_post_term_cache' => false
        ] );

        $posts = ( new WP_Query( $args ) )->posts;

        // Keep only objects.
        $posts   = papi_get_only_objects( $posts );
        $results = [];

        foreach ( $posts as $post ) {
            $obj = get_post_type_object( $post->post_type );

            if ( empty( $obj ) ) {
                continue;
            }

            if ( ! isset( $results[$obj->labels->menu_name] ) ) {
                $results[$obj->labels->menu_name] = [];
            }

            $results[$obj->labels->menu_name][] = $post;
        }

        ksort( $results );

        return $results;
    }

    /**
     * Render property html.
     */
    public function html() {
        $layout             = $this->get_setting( 'layout' );
        $labels             = $this->get_labels();
        $post_types         = $this->get_post_types();
        $render_label       = count( $post_types ) > 1;
        $advanced           = $render_label && $layout === 'advanced';
        $single             = $render_label && $layout !== 'advanced';
        $classes            = count( $post_types ) > 1 ? '' : 'papi-fullwidth';
        $settings           = $this->get_settings();
        $value              = $this->get_value();
        $value              = is_object( $value ) ? $value->ID : 0;
        $selected_label     = array_shift( $labels );
        $selected_post_type = get_post_type( $value ) ? : '';
        $posts              = $this->get_posts( $selected_post_type );

        if ( $settings->select2 ) {
            $classes = ' papi-component-select2';
        }
        ?>

        <div class="papi-property-post <?php echo $advanced ? 'advanced' : ''; ?>">
            <?php if ( $advanced ): ?>
                <table class="papi-table">
                    <tr>
                        <td>
                            <label for="<?php echo $this->html_id(); ?>_post_type">
                            <?php echo $settings->labels['select_post_type']; ?>
                            </label>
                        </td>
                        <td>
                            <select
                                id="<?php echo $this->html_id(); ?>_post_type"
                                class="<?php echo $classes; ?> papi-property-post-left"
                                data-select-item="<?php echo $settings->labels['select_item']; ?>"
                                data-post-query='<?php echo papi_maybe_json_encode( $settings->query ); ?>'
                                data-width="100%"
                                >
                                <?php
                                foreach ( $labels as $post_type => $label ) {
                                    $selected = $post_type === $selected_post_type ? 'selected' : null;

                                    papi_render_html_tag( 'option', [
                                        'value'    => $post_type,
                                        'selected' => $selected,
                                        $label
                                    ] );

                                    if ( $selected ) {
                                        $selected_label = $label;
                                    }
                                }
                                ?>
                            </select>
                        </td>
                    </tr>
                    <tr>
                    <td>
                        <label for="<?php echo $this->html_id(); ?>_posts">
                            <?php echo sprintf( $settings->labels['select_item'], $selected_label ); ?>
                        </label>
                    </td>
                    <td>
            <?php endif; ?>

            <select
                class="<?php echo $classes; ?>  papi-property-post-right"
                id="<?php echo $this->html_id(); ?>_posts"
                name="<?php echo $this->html_name(); ?>"
                data-allow-clear="<?php echo ! empty( $settings->placeholder ); ?>"
                data-placeholder="<?php echo $settings->placeholder; ?>"
                data-width="100%"
                >

                <?php if ( ! empty( $settings->placeholder ) ): ?>
                    <option value=""></option>
                <?php endif; ?>

                <?php foreach ( $posts as $label => $items ) : ?>

                    <?php if ( $single ): ?>
                        <optgroup label="<?php echo $label; ?>">
                    <?php endif; ?>

                    <?php
                    foreach ( $items as $post ) {
                        if ( papi_is_empty( $post->post_title ) ) {
                            continue;
                        }

                        papi_render_html_tag( 'option', [
                            'value'      => $post->ID,
                            'selected'   => $value === $post->ID ? 'selected' : null,
                            $post->post_title
                        ] );
                    }
                    ?>

                    <?php if ( $single ): ?>
                        </optgroup>
                    <?php endif; ?>

                <?php endforeach; ?>
            </select>

            <?php if ( $advanced ): ?>
                    </td>
                </tr>
            </table>
            <?php endif; ?>

        </div>
        <?php
    }

    /**
     * Import value to the property.
     *
     * @param  mixed  $value
     * @param  string $slug
     * @param  int    $post_id
     *
     * @return mixed
     */
    public function import_value( $value, $slug, $post_id ) {
        if ( $value instanceof WP_Post ) {
            return $value->ID;
        }

        if ( is_numeric( $value ) ) {
            return (int) $value;
        }

        return $this->default_value;
    }
}

Classes

Functions