WordPressを読む　27-9 /blog/wp-includes/query.php 9

2014/11/29 2014/12/11

1 /blog/wp-includes/query.php 9
2 WP_Query::is_page()
3 WP_Query::is_paged()
4 WP_Query::is_preview()
5 WP_Query::is_robots()
6 WP_Query::is_search()
7 WP_Query::is_single()
8 WP_Query::is_singular()
9 WP_Query::is_time()
10 WP_Query::is_trackback()
11 WP_Query::is_year()
12 WP_Query::is_404()
13 WP_Query::is_main_query()
14 WP_Query::reset_postdata()
15 関数　wp_old_slug_redirect()
16 関数　setup_postdata()

/blog/wp-includes/query.php 9

WP_Query::is_page()

	/**
	 * Is the query for an existing single page?
	 *
	 * If the $page parameter is specified, this function will additionally
	 * check if the query is for one of the pages specified.
	 *
	 * @see WP_Query::is_single()
	 * @see WP_Query::is_singular()
	 *
	 * @since 3.1.0
	 *
	 * @param mixed $page Page ID, title, slug, path, or array of such.
	 * @return bool
	 */
	public function is_page( $page = '' ) {
		if ( !$this->is_page )
			return false;

		if ( empty( $page ) )
			return true;

		$page_obj = $this->get_queried_object();

		$page = (array) $page;

		if ( in_array( $page_obj->ID, $page ) ) {
			return true;
		} elseif ( in_array( $page_obj->post_title, $page ) ) {
			return true;
		} else if ( in_array( $page_obj->post_name, $page ) ) {
			return true;
		} else {
			foreach ( $page as $pagepath ) {
				if ( ! strpos( $pagepath, '/' ) ) {
					continue;
				}
				$pagepath_obj = get_page_by_path( $pagepath );

				if ( $pagepath_obj && ( $pagepath_obj->ID == $page_obj->ID ) ) {
					return true;
				}
			}
		}

		return false;
	}

/**

* Is the query for an existing single page?

* If the $page parameter is specified, this function will additionally

* check if the query is for one of the pages specified.

* @see WP_Query::is_single()

* @see WP_Query::is_singular()

* @since 3.1.0

* @param mixed $page Page ID, title, slug, path, or array of such.

* @return bool

public function is_page( $page = '' ) {

if ( !$this->is_page )

return false;

if ( empty( $page ) )

return true;

$page_obj = $this->get_queried_object();

$page = (array) $page;

if ( in_array( $page_obj->ID, $page ) ) {

return true;

} elseif ( in_array( $page_obj->post_title, $page ) ) {

return true;

} else if ( in_array( $page_obj->post_name, $page ) ) {

return true;

} else {

foreach ( $page as $pagepath ) {

if ( ! strpos( $pagepath, '/' ) ) {

continue;

}

$pagepath_obj = get_page_by_path( $pagepath );

if ( $pagepath_obj && ( $pagepath_obj->ID == $page_obj->ID ) ) {

return true;

}

return false;

}

WP_Query::is_paged()

	/**
	 * Is the query for paged result and not for the first page?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_paged() {
		return (bool) $this->is_paged;
	}

/**

* Is the query for paged result and not for the first page?

* @since 3.1.0

* @return bool

public function is_paged() {

return (bool) $this->is_paged;

}

WP_Query::is_preview()

	/**
	 * Is the query for a post or page preview?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_preview() {
		return (bool) $this->is_preview;
	}

/**

* Is the query for a post or page preview?

* @since 3.1.0

* @return bool

public function is_preview() {

return (bool) $this->is_preview;

}

WP_Query::is_robots()

	/**
	 * Is the query for the robots file?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_robots() {
		return (bool) $this->is_robots;
	}

/**

* Is the query for the robots file?

* @since 3.1.0

* @return bool

public function is_robots() {

return (bool) $this->is_robots;

}

WP_Query::is_search()

	/**
	 * Is the query for a search?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_search() {
		return (bool) $this->is_search;
	}

/**

* Is the query for a search?

* @since 3.1.0

* @return bool

public function is_search() {

return (bool) $this->is_search;

}

WP_Query::is_single()

	/**
	 * Is the query for an existing single post?
	 *
	 * Works for any post type, except attachments and pages
	 *
	 * If the $post parameter is specified, this function will additionally
	 * check if the query is for one of the Posts specified.
	 *
	 * @see WP_Query::is_page()
	 * @see WP_Query::is_singular()
	 *
	 * @since 3.1.0
	 *
	 * @param mixed $post Post ID, title, slug, path, or array of such.
	 * @return bool
	 */
	public function is_single( $post = '' ) {
		if ( !$this->is_single )
			return false;

		if ( empty($post) )
			return true;

		$post_obj = $this->get_queried_object();

		$post = (array) $post;

		if ( in_array( $post_obj->ID, $post ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_title, $post ) ) {
			return true;
		} elseif ( in_array( $post_obj->post_name, $post ) ) {
			return true;
		} else {
			foreach ( $post as $postpath ) {
				if ( ! strpos( $postpath, '/' ) ) {
					continue;
				}
				$postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

				if ( $postpath_obj && ( $postpath_obj->ID == $post_obj->ID ) ) {
					return true;
				}
			}
		}
		return false;
	}

/**

* Is the query for an existing single post?

* Works for any post type, except attachments and pages

* If the $post parameter is specified, this function will additionally

* check if the query is for one of the Posts specified.

* @see WP_Query::is_page()

* @see WP_Query::is_singular()

* @since 3.1.0

* @param mixed $post Post ID, title, slug, path, or array of such.

* @return bool

public function is_single( $post = '' ) {

if ( !$this->is_single )

return false;

if ( empty($post) )

return true;

$post_obj = $this->get_queried_object();

$post = (array) $post;

if ( in_array( $post_obj->ID, $post ) ) {

return true;

} elseif ( in_array( $post_obj->post_title, $post ) ) {

return true;

} elseif ( in_array( $post_obj->post_name, $post ) ) {

return true;

} else {

foreach ( $post as $postpath ) {

if ( ! strpos( $postpath, '/' ) ) {

continue;

}

$postpath_obj = get_page_by_path( $postpath, OBJECT, $post_obj->post_type );

if ( $postpath_obj && ( $postpath_obj->ID == $post_obj->ID ) ) {

return true;

}

return false;

}

WP_Query::is_singular()

	/**
	 * Is the query for an existing single post of any post type (post, attachment, page, ... )?
	 *
	 * If the $post_types parameter is specified, this function will additionally
	 * check if the query is for one of the Posts Types specified.
	 *
	 * @see WP_Query::is_page()
	 * @see WP_Query::is_single()
	 *
	 * @since 3.1.0
	 *
	 * @param mixed $post_types Optional. Post Type or array of Post Types
	 * @return bool
	 */
	public function is_singular( $post_types = '' ) {
		if ( empty( $post_types ) || !$this->is_singular )
			return (bool) $this->is_singular;

		$post_obj = $this->get_queried_object();

		return in_array( $post_obj->post_type, (array) $post_types );
	}

/**

* Is the query for an existing single post of any post type (post, attachment, page, ... )?

* If the $post_types parameter is specified, this function will additionally

* check if the query is for one of the Posts Types specified.

* @see WP_Query::is_page()

* @see WP_Query::is_single()

* @since 3.1.0

* @param mixed $post_types Optional. Post Type or array of Post Types

* @return bool

public function is_singular( $post_types = '' ) {

if ( empty( $post_types ) || !$this->is_singular )

return (bool) $this->is_singular;

$post_obj = $this->get_queried_object();

return in_array( $post_obj->post_type, (array) $post_types );

}

WP_Query::is_time()

	/**
	 * Is the query for a specific time?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_time() {
		return (bool) $this->is_time;
	}

/**

* Is the query for a specific time?

* @since 3.1.0

* @return bool

public function is_time() {

return (bool) $this->is_time;

}

WP_Query::is_trackback()

	/**
	 * Is the query for a trackback endpoint call?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_trackback() {
		return (bool) $this->is_trackback;
	}

/**

* Is the query for a trackback endpoint call?

* @since 3.1.0

* @return bool

public function is_trackback() {

return (bool) $this->is_trackback;

}

WP_Query::is_year()

	/**
	 * Is the query for an existing year archive?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_year() {
		return (bool) $this->is_year;
	}

/**

* Is the query for an existing year archive?

* @since 3.1.0

* @return bool

public function is_year() {

return (bool) $this->is_year;

}

WP_Query::is_404()

	/**
	 * Is the query a 404 (returns no results)?
	 *
	 * @since 3.1.0
	 *
	 * @return bool
	 */
	public function is_404() {
		return (bool) $this->is_404;
	}

/**

* Is the query a 404 (returns no results)?

* @since 3.1.0

* @return bool

public function is_404() {

return (bool) $this->is_404;

}

WP_Query::is_main_query()

	/**
	 * Is the query the main query?
	 *
	 * @since 3.3.0
	 *
	 * @return bool
	 */
	public function is_main_query() {
		global $wp_the_query;
		return $wp_the_query === $this;
	}

/**

* Is the query the main query?

* @since 3.3.0

* @return bool

public function is_main_query() {

global $wp_the_query;

return $wp_the_query === $this;

}

WP_Query::reset_postdata()

	/**
	 * After looping through a nested query, this function
	 * restores the $post global to the current post in this query.
	 *
	 * @since 3.7.0
	 *
	 * @return bool
	 */
	public function reset_postdata() {
		if ( ! empty( $this->post ) ) {
			$GLOBALS['post'] = $this->post;
			setup_postdata( $this->post );
		}
	}
}

/**

* After looping through a nested query, this function

* restores the $post global to the current post in this query.

* @since 3.7.0

* @return bool

public function reset_postdata() {

if ( ! empty( $this->post ) ) {

$GLOBALS['post'] = $this->post;

setup_postdata( $this->post );

}

WP_Query::クラス定義終了

関数　wp_old_slug_redirect()

/**
 * Redirect old slugs to the correct permalink.
 *
 * Attempts to find the current slug from the past slugs.
 *
 * @since 2.1.0
 * @uses $wp_query
 * @uses $wpdb
 *
 * @return null If no link is found, null is returned.
 */
function wp_old_slug_redirect() {
	global $wp_query;
	if ( is_404() && '' != $wp_query->query_vars['name'] ) :
		global $wpdb;

		// Guess the current post_type based on the query vars.
		if ( get_query_var('post_type') )
			$post_type = get_query_var('post_type');
		elseif ( !empty($wp_query->query_vars['pagename']) )
			$post_type = 'page';
		else
			$post_type = 'post';

		if ( is_array( $post_type ) ) {
			if ( count( $post_type ) > 1 )
				return;
			$post_type = array_shift( $post_type );
		}

		// Do not attempt redirect for hierarchical post types
		if ( is_post_type_hierarchical( $post_type ) )
			return;

		$query = $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_slug' AND meta_value = %s", $post_type, $wp_query->query_vars['name']);

		// if year, monthnum, or day have been specified, make our query more precise
		// just in case there are multiple identical _wp_old_slug values
		if ( '' != $wp_query->query_vars['year'] )
			$query .= $wpdb->prepare(" AND YEAR(post_date) = %d", $wp_query->query_vars['year']);
		if ( '' != $wp_query->query_vars['monthnum'] )
			$query .= $wpdb->prepare(" AND MONTH(post_date) = %d", $wp_query->query_vars['monthnum']);
		if ( '' != $wp_query->query_vars['day'] )
			$query .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", $wp_query->query_vars['day']);

		$id = (int) $wpdb->get_var($query);

		if ( ! $id )
			return;

		$link = get_permalink($id);

		if ( !$link )
			return;

		wp_redirect( $link, 301 ); // Permanent redirect
		exit;
	endif;
}

/**

* Redirect old slugs to the correct permalink.

* Attempts to find the current slug from the past slugs.

* @since 2.1.0

* @uses $wp_query

* @uses $wpdb

* @return null If no link is found, null is returned.

function wp_old_slug_redirect() {

global $wp_query;

if ( is_404() && '' != $wp_query->query_vars['name'] ) :

global $wpdb;

// Guess the current post_type based on the query vars.

if ( get_query_var('post_type') )

$post_type = get_query_var('post_type');

elseif ( !empty($wp_query->query_vars['pagename']) )

$post_type = 'page';

else

$post_type = 'post';

if ( is_array( $post_type ) ) {

if ( count( $post_type ) > 1 )

return;

$post_type = array_shift( $post_type );

}

// Do not attempt redirect for hierarchical post types

if ( is_post_type_hierarchical( $post_type ) )

return;

$query = $wpdb->prepare("SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_slug' AND meta_value = %s", $post_type, $wp_query->query_vars['name']);

// if year, monthnum, or day have been specified, make our query more precise

// just in case there are multiple identical _wp_old_slug values

if ( '' != $wp_query->query_vars['year'] )

$query .= $wpdb->prepare(" AND YEAR(post_date) = %d", $wp_query->query_vars['year']);

if ( '' != $wp_query->query_vars['monthnum'] )

$query .= $wpdb->prepare(" AND MONTH(post_date) = %d", $wp_query->query_vars['monthnum']);

if ( '' != $wp_query->query_vars['day'] )

$query .= $wpdb->prepare(" AND DAYOFMONTH(post_date) = %d", $wp_query->query_vars['day']);

$id = (int) $wpdb->get_var($query);

if ( ! $id )

return;

$link = get_permalink($id);

if ( !$link )

return;

wp_redirect( $link, 301 ); // Permanent redirect

exit;

endif;

}

関数　setup_postdata()

/**
 * Set up global post data.
 *
 * @since 1.5.0
 *
 * @param object $post Post data.
 * @uses do_action_ref_array() Calls 'the_post'
 * @return bool True when finished.
 */
function setup_postdata( $post ) {
	global $id, $authordata, $currentday, $currentmonth, $page, $pages, $multipage, $more, $numpages;

	$id = (int) $post->ID;

	$authordata = get_userdata($post->post_author);

	$currentday = mysql2date('d.m.y', $post->post_date, false);
	$currentmonth = mysql2date('m', $post->post_date, false);
	$numpages = 1;
	$multipage = 0;
	$page = get_query_var('page');
	if ( ! $page )
		$page = 1;
	if ( is_single() || is_page() || is_feed() )
		$more = 1;
	$content = $post->post_content;
	if ( false !== strpos( $content, '<!--nextpage-->' ) ) {
		if ( $page > 1 )
			$more = 1;
		$content = str_replace( "\n<!--nextpage-->\n", '<!--nextpage-->', $content );
		$content = str_replace( "\n<!--nextpage-->", '<!--nextpage-->', $content );
		$content = str_replace( "<!--nextpage-->\n", '<!--nextpage-->', $content );
		// Ignore nextpage at the beginning of the content.
		if ( 0 === strpos( $content, '<!--nextpage-->' ) )
			$content = substr( $content, 15 );
		$pages = explode('<!--nextpage-->', $content);
		$numpages = count($pages);
		if ( $numpages > 1 )
			$multipage = 1;
	} else {
		$pages = array( $post->post_content );
	}

	/**
	 * Fires once the post data has been setup.
	 *
	 * @since 2.8.0
	 *
	 * @param WP_Post &$post The Post object (passed by reference).
	 */
	do_action_ref_array( 'the_post', array( &$post ) );

	return true;
}

/**

* Set up global post data.

* @since 1.5.0

* @param object $post Post data.

* @uses do_action_ref_array() Calls 'the_post'

* @return bool True when finished.

function setup_postdata( $post ) {

global $id, $authordata, $currentday, $currentmonth, $page, $pages, $multipage, $more, $numpages;

$id = (int) $post->ID;

$authordata = get_userdata($post->post_author);

$currentday = mysql2date('d.m.y', $post->post_date, false);

$currentmonth = mysql2date('m', $post->post_date, false);

$numpages = 1;

$multipage = 0;

$page = get_query_var('page');

if ( ! $page )

$page = 1;

if ( is_single() || is_page() || is_feed() )

$more = 1;

$content = $post->post_content;

if ( false !== strpos( $content, '' ) ) {

if ( $page > 1 )

$more = 1;

$content = str_replace( "\n\n", '', $content );

$content = str_replace( "\n", '', $content );

$content = str_replace( "\n", '', $content );

// Ignore nextpage at the beginning of the content.

if ( 0 === strpos( $content, '' ) )

$content = substr( $content, 15 );

$pages = explode('', $content);

$numpages = count($pages);

if ( $numpages > 1 )

$multipage = 1;

} else {

$pages = array( $post->post_content );

}

/**

* Fires once the post data has been setup.

* @since 2.8.0

* @param WP_Post &$post The Post object (passed by reference).

do_action_ref_array( 'the_post', array( &$post ) );

return true;

}

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WordPressを読む 27-9 /blog/wp-includes/query.php 9

/blog/wp-includes/query.php 9

WordPressを読む　27-9 /blog/wp-includes/query.php 9