From e19c9ab70c063c686bf07336f4b7ae2a9074173e Mon Sep 17 00:00:00 2001
From: ryan <ryan@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Sun, 6 Nov 2005 07:04:46 +0000
Subject: [PATCH] Preview future dated posts. Props davidhouse.  fixes #1795

git-svn-id: http://svn.automattic.com/wordpress/trunk@3001 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/classes.php   | 19 ++++++++++++++++---
 wp-includes/functions.php |  6 ++++++
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/wp-includes/classes.php b/wp-includes/classes.php
index deab5fff75..e19734cb9f 100644
--- a/wp-includes/classes.php
+++ b/wp-includes/classes.php
@@ -13,6 +13,7 @@ class WP_Query {
 	var $post;
 
 	var $is_single = false;
+	var $is_preview = false;
 	var $is_page = false;
 	var $is_archive = false;
 	var $is_date = false;
@@ -534,8 +535,10 @@ class WP_Query {
 		}
 
 		$now = gmdate('Y-m-d H:i:59');
-
-		if ($pagenow != 'post.php' && $pagenow != 'edit.php') {
+		
+		//only select past-dated posts, except if a logged in user is viewing a single: then, if they
+		//can edit the post, we let them through
+		if ($pagenow != 'post.php' && $pagenow != 'edit.php' && !($this->is_single && $user_ID)) {
 			$where .= " AND post_date_gmt <= '$now'";
 			$distinct = 'DISTINCT';
 		}
@@ -609,13 +612,23 @@ class WP_Query {
 				} else {
 					if ('draft' == $status) {
 						// User must have edit permissions on the draft to preview.
-						if (! user_can_edit_post($user_ID, $this->posts[0]->ID))
+						if (! user_can_edit_post($user_ID, $this->posts[0]->ID)) {
 							$this->posts = array();
+						} else {
+							$this->is_preview = true;
+						}
 					} elseif ('private' == $status) {
 						if ($this->posts[0]->post_author != $user_ID)
 							$this->posts = array();
 					}
 				}
+			} else {
+				if (mysql2date('U', $this->posts[0]->post_date) > mysql2date('U', $now)) { //it's future dated
+					$this->is_preview = true;
+					if (!current_user_can('edit_post', $this->posts[0]->ID)) {
+						$this->posts = array ( );
+					}
+				}
 			}
 		}
 
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 50458422d4..666d46192c 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1404,6 +1404,12 @@ function is_subpost () {
 	return $wp_query->is_subpost;
 }
 
+function is_preview() {
+	global $wp_query;
+	
+	return $wp_query->is_preview;
+}
+
 function is_archive () {
 	global $wp_query;