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WordPress函數(shù)_wp_translate_postdata()用法

  • liuying 發(fā)布于 2024-09-10
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  • 閱讀(194)

源代碼

File: wp-admin/includes/post.php

function _wp_translate_postdata( $update = false, $post_data = null ) {

	if ( empty($post_data) )
		$post_data = &$_POST;

	if ( $update )
		$post_data['ID'] = (int) $post_data['post_ID'];

	$ptype = get_post_type_object( $post_data['post_type'] );

	if ( $update && ! current_user_can( 'edit_post', $post_data['ID'] ) ) {
		if ( 'page' == $post_data['post_type'] )
			return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
		else
			return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to edit posts as this user.' ) );
	} elseif ( ! $update && ! current_user_can( $ptype->cap->create_posts ) ) {
		if ( 'page' == $post_data['post_type'] )
			return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to create pages as this user.' ) );
		else
			return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to create posts as this user.' ) );
	}

	if ( isset( $post_data['content'] ) )
		$post_data['post_content'] = $post_data['content'];

	if ( isset( $post_data['excerpt'] ) )
		$post_data['post_excerpt'] = $post_data['excerpt'];

	if ( isset( $post_data['parent_id'] ) )
		$post_data['post_parent'] = (int) $post_data['parent_id'];

	if ( isset($post_data['trackback_url']) )
		$post_data['to_ping'] = $post_data['trackback_url'];

	$post_data['user_ID'] = get_current_user_id();

	if (!empty ( $post_data['post_author_override'] ) ) {
		$post_data['post_author'] = (int) $post_data['post_author_override'];
	} else {
		if (!empty ( $post_data['post_author'] ) ) {
			$post_data['post_author'] = (int) $post_data['post_author'];
		} else {
			$post_data['post_author'] = (int) $post_data['user_ID'];
		}
	}

	if ( isset( $post_data['user_ID'] ) && ( $post_data['post_author'] != $post_data['user_ID'] )
		 && ! current_user_can( $ptype->cap->edit_others_posts ) ) {
		if ( $update ) {
			if ( 'page' == $post_data['post_type'] )
				return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
			else
				return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to edit posts as this user.' ) );
		} else {
			if ( 'page' == $post_data['post_type'] )
				return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to create pages as this user.' ) );
			else
				return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to create posts as this user.' ) );
		}
	}

	if ( ! empty( $post_data['post_status'] ) ) {
		$post_data['post_status'] = sanitize_key( $post_data['post_status'] );

		// No longer an auto-draft
		if ( 'auto-draft' === $post_data['post_status'] ) {
			$post_data['post_status'] = 'draft';
		}

		if ( ! get_post_status_object( $post_data['post_status'] ) ) {
			unset( $post_data['post_status'] );
		}
	}

	// What to do based on which button they pressed
	if ( isset($post_data['saveasdraft']) && '' != $post_data['saveasdraft'] )
		$post_data['post_status'] = 'draft';
	if ( isset($post_data['saveasprivate']) && '' != $post_data['saveasprivate'] )
		$post_data['post_status'] = 'private';
	if ( isset($post_data['publish']) && ( '' != $post_data['publish'] ) && ( !isset($post_data['post_status']) || $post_data['post_status'] != 'private' ) )
		$post_data['post_status'] = 'publish';
	if ( isset($post_data['advanced']) && '' != $post_data['advanced'] )
		$post_data['post_status'] = 'draft';
	if ( isset($post_data['pending']) && '' != $post_data['pending'] )
		$post_data['post_status'] = 'pending';

	if ( isset( $post_data['ID'] ) )
		$post_id = $post_data['ID'];
	else
		$post_id = false;
	$previous_status = $post_id ? get_post_field( 'post_status', $post_id ) : false;

	if ( isset( $post_data['post_status'] ) && 'private' == $post_data['post_status'] && ! current_user_can( $ptype->cap->publish_posts ) ) {
		$post_data['post_status'] = $previous_status ? $previous_status : 'pending';
	}

	$published_statuses = array( 'publish', 'future' );

	// Posts 'submitted for approval' present are submitted to $_POST the same as if they were being published.
	// Change status from 'publish' to 'pending' if user lacks permissions to publish or to resave published posts.
	if ( isset($post_data['post_status']) && (in_array( $post_data['post_status'], $published_statuses ) && !current_user_can( $ptype->cap->publish_posts )) )
		if ( ! in_array( $previous_status, $published_statuses ) || !current_user_can( 'edit_post', $post_id ) )
			$post_data['post_status'] = 'pending';

	if ( ! isset( $post_data['post_status'] ) ) {
		$post_data['post_status'] = 'auto-draft' === $previous_status ? 'draft' : $previous_status;
	}

	if ( isset( $post_data['post_password'] ) && ! current_user_can( $ptype->cap->publish_posts ) ) {
		unset( $post_data['post_password'] );
	}

	if (!isset( $post_data['comment_status'] ))
		$post_data['comment_status'] = 'closed';

	if (!isset( $post_data['ping_status'] ))
		$post_data['ping_status'] = 'closed';

	foreach ( array('aa', 'mm', 'jj', 'hh', 'mn') as $timeunit ) {
		if ( !empty( $post_data['hidden_' . $timeunit] ) && $post_data['hidden_' . $timeunit] != $post_data[$timeunit] ) {
			$post_data['edit_date'] = '1';
			break;
		}
	}

	if ( !empty( $post_data['edit_date'] ) ) {
		$aa = $post_data['aa'];
		$mm = $post_data['mm'];
		$jj = $post_data['jj'];
		$hh = $post_data['hh'];
		$mn = $post_data['mn'];
		$ss = $post_data['ss'];
		$aa = ($aa <= 0 ) ? date('Y') : $aa;
		$mm = ($mm <= 0 ) ? date('n') : $mm;
		$jj = ($jj > 31 ) ? 31 : $jj;
		$jj = ($jj <= 0 ) ? date('j') : $jj;
		$hh = ($hh > 23 ) ? $hh -24 : $hh;
		$mn = ($mn > 59 ) ? $mn -60 : $mn;
		$ss = ($ss > 59 ) ? $ss -60 : $ss;
		$post_data['post_date'] = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $aa, $mm, $jj, $hh, $mn, $ss );
		$valid_date = wp_checkdate( $mm, $jj, $aa, $post_data['post_date'] );
		if ( !$valid_date ) {
			return new WP_Error( 'invalid_date', __( 'Invalid date.' ) );
		}
		$post_data['post_date_gmt'] = get_gmt_from_date( $post_data['post_date'] );
	}

	if ( isset( $post_data['post_category'] ) ) {
		$category_object = get_taxonomy( 'category' );
		if ( ! current_user_can( $category_object->cap->assign_terms ) ) {
			unset( $post_data['post_category'] );
		}
	}

	return $post_data;
}

更新日志

Version描述
2.6.0Introduced.

在WordPress中，_wp_translate_postdata() 是一個內(nèi)部函數(shù)，用于將表單提交的數(shù)據(jù)轉(zhuǎn)換為WordPress帖子（posts）和頁面（pages）的正確格式。這個函數(shù)主要在WordPress的 wp_insert_post() 函數(shù)中使用，以準(zhǔn)備和過濾通過 $_POST 變量提交的數(shù)據(jù)。
這個函數(shù)不是公開文檔化的，通常不應(yīng)該在主題或插件代碼中直接使用，因為它可能會在WordPress的未來版本中發(fā)生變化。然而，如果你需要了解其用法，以下是該函數(shù)的基本結(jié)構(gòu)：

_wp_translate_postdata( $post_type = 'post' );

參數(shù)解釋如下：

  • $post_type：可選參數(shù)，表示帖子類型。默認(rèn)為 ‘post’，但也可以是 ‘page’ 或其他自定義帖子類型。
    函數(shù)執(zhí)行以下操作：
  • 確保提交的數(shù)據(jù)是有效的。
  • 將提交的數(shù)據(jù)轉(zhuǎn)換為WordPress帖子或頁面的格式。
  • 執(zhí)行必要的數(shù)據(jù)過濾和消毒。
    由于 _wp_translate_postdata() 是一個內(nèi)部函數(shù)，它的使用通常是在WordPress核心處理帖子提交時隱式發(fā)生的。以下是一個示例，展示了在處理帖子提交時可能會調(diào)用此函數(shù)的上下文：
if ( isset( $_POST['post_type'] ) ) {
    $post_type = $_POST['post_type'];
} else {
    $post_type = 'post';
}
// 在處理帖子提交之前，確保已經(jīng)做了安全檢查
if ( isset( $_POST['post_ID'] ) ) {
    $post_id = absint( $_POST['post_ID'] );
}
// 確保當(dāng)前用戶有權(quán)限編輯或創(chuàng)建帖子
if ( current_user_can( 'edit_post', $post_id ) ) {
    // 調(diào)用內(nèi)部函數(shù)來轉(zhuǎn)換和過濾提交的數(shù)據(jù)
    _wp_translate_postdata( $post_type );

    // 這里可以添加更多的代碼來處理轉(zhuǎn)換后的數(shù)據(jù)，例如保存帖子
}

請記住，直接使用 _wp_translate_postdata() 函數(shù)是不推薦的，因為它可能會在沒有通知的情況下在未來的WordPress版本中發(fā)生變化。如果你正在編寫插件或主題，并需要處理帖子提交，應(yīng)該使用WordPress提供的高級函數(shù)，如 wp_insert_post() 和 wp_update_post()。
如果你確實需要處理提交的數(shù)據(jù)，以下是一個更安全的做法：

// 準(zhǔn)備要插入或更新的帖子數(shù)組
$postarr = array(
    'ID'           => $post_id, // 如果是更新已有帖子，提供帖子ID
    'post_title'   => $_POST['post_title'],
    'post_content' => $_POST['post_content'],
    // ...其他帖子字段
);
// 使用 wp_insert_post() 或 wp_update_post() 來處理帖子
if ( $post_id ) {
    // 更新帖子
    $post_id = wp_update_post( $postarr );
} else {
    // 插入新帖子
    $post_id = wp_insert_post( $postarr );
}

在上述代碼中，不需要直接調(diào)用 _wp_translate_postdata()，因為 wp_insert_post() 和 wp_update_post() 已經(jīng)處理了數(shù)據(jù)轉(zhuǎn)換和過濾。

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