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<?php

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namespace Yoast\WP\SEO\Presenters;

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use WP_User;

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use Yoast\WP\SEO\Presentations\Indexable_Presentation;

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/**

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* Presenter class for the meta author tag.

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class Meta_Author_Presenter extends Abstract_Indexable_Tag_Presenter {

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/**

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* The tag key name.

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* @var string

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protected $key = 'author';

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/**

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* Returns the author for a post in a meta author tag.

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* @return string The meta author tag.

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public function present() {

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$output = parent::present();

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if ( ! empty( $output ) ) {

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return $output;

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}

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return '';

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}

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/**

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* Get the author's display name.

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* @return string The author's display name.

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public function get() {

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if ( $this->presentation->model->object_sub_type !== 'post' ) {

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return '';

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}

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$user_data = \get_userdata( $this->presentation->context->post->post_author );

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if ( ! $user_data instanceof WP_User ) {

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return '';

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}

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/**

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* Filter: 'wpseo_meta_author' - Allow developers to filter the article's author meta tag.

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* @param string $author_name The article author's display name. Return empty to disable the tag.

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* @param Indexable_Presentation $presentation The presentation of an indexable.

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return \trim( $this->helpers->schema->html->smart_strip_tags( \apply_filters( 'wpseo_meta_author', $user_data->display_name, $this->presentation ) ) );

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}

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}

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