function GetNewsfeedPosts( $matches, $user_id, $show_more_post, $followers = 0)
{
global $DBConnection;
$groups = $this->SubscribedGroupsIDs($user_id);/* get all of the groups that I am a part of */
$union = '';/* declare the variable */
$ratingQuery = 'p_id';/* declare the variable and set the default to all ratings */
/*----------------filtering the home posts----------------*/
if($_SESSION['ratingFilter'] == 0) {/* if the selected rating filter is all ratings then */
$ratingQuery = 'p_id';
} else if($_SESSION['ratingFilter'] == 1) {/* if the selected rating filter is most loves then */
$ratingQuery = 'likes';
} else if($_SESSION['ratingFilter'] == 2) {/* if the selected rating filter is most comments then */
$ratingQuery = 'likes';
} else if($_SESSION['ratingFilter'] == 3) {/* if the selected rating filter is most shares then */
$ratingQuery = 'likes';
} else if($_SESSION['ratingFilter'] == 4) {/* if the selected rating filter is most views then */
$ratingQuery = 'likes';
}
if($groups != 0)
{
$union = "UNION ALL
(
SELECT DISTINCT wallposts.p_id,wallposts.is_profile_notes,wallposts.times_viewed,
wallposts.marked,wallposts.secure_id,wallposts.reshared,wallposts.group_id,
wallposts.totaluploads,wallposts.WallUploadID,wallposts.type,
wallposts.value,wallposts.media,wallposts.youtube,wallposts.post_type,
wallposts.privacy,wallposts.tagedpersons,wallposts.with_friends_tagged,wallposts.emotion_head,wallposts.selected_emotion,wallposts.title,
wallposts.url,wallposts.description,wallposts.cur_image,
wallposts.uip,wallposts.likes,wallposts.userid,
wallposts.posted_by,wallposts.post as postdata,wallusers.*,
UNIX_TIMESTAMP() - wallposts.date_created AS TimeSpent,
PosterTable.mem_pic as posterPic, PosterTable.gender as posterGender,PosterTable.oauth_uid as poster_oauth_uid, PosterTable.username as posterUsername,
PosterTable.mem_fname as posterFname,PosterTable.work as posterWork,
PosterTable.mem_lname as posterLname,walllikes_track.id as PostLikeFound,wallposts.date_created
FROM
wallusers,wallusers as PosterTable, wallposts
LEFT JOIN walllikes_track ON wallposts.p_id = walllikes_track.post_id AND walllikes_track.member_id = ".$user_id."
WHERE
wallusers.active = 1
AND PosterTable.active = 1 AND
wallposts.group_id IN (".$groups.") AND wallposts.group_id != 0
AND PosterTable.mem_id = wallposts.posted_by AND wallposts.marked < ".$this->flagNumber."
AND wallusers.mem_id = wallposts.posted_by ) ";
}
if($followers != 0)
{
$union .= "UNION ALL
(
SELECT DISTINCT wallposts.p_id,wallposts.is_profile_notes,wallposts.times_viewed,
wallposts.marked,wallposts.secure_id,wallposts.reshared,wallposts.group_id,
wallposts.totaluploads,wallposts.WallUploadID,wallposts.type,
wallposts.value,wallposts.media,wallposts.youtube,wallposts.post_type,
wallposts.privacy,wallposts.tagedpersons,wallposts.with_friends_tagged,
wallposts.emotion_head,wallposts.selected_emotion,wallposts.title,
wallposts.url,wallposts.description,wallposts.cur_image,
wallposts.uip,wallposts.likes,wallposts.userid,
wallposts.posted_by,wallposts.post as postdata,wallusers.*,
UNIX_TIMESTAMP() - wallposts.date_created AS TimeSpent,
PosterTable.mem_pic as posterPic,
PosterTable.gender as posterGender,
PosterTable.oauth_uid as poster_oauth_uid,
PosterTable.username as posterUsername,
PosterTable.mem_fname as posterFname,
PosterTable.work as posterWork,
PosterTable.mem_lname as posterLname,
walllikes_track.id as PostLikeFound,
wallposts.date_created
FROM
wallusers,wallusers as PosterTable,
wallposts LEFT JOIN walllikes_track ON wallposts.p_id = walllikes_track.post_id AND walllikes_track.member_id = ".$user_id."
WHERE
wallusers.active = 1
AND PosterTable.active = 1 AND
wallusers.mem_id IN (".$followers.")
AND wallposts.privacy = 1
AND PosterTable.mem_id = wallposts.posted_by
AND wallposts.marked < ".$this->flagNumber."
AND wallusers.mem_id = wallposts.userid ) ";
}
// updated for groups
$qry = "SELECT * FROM (
(
SELECT DISTINCT wallposts.p_id,wallposts.is_profile_notes,wallposts.times_viewed,
wallposts.marked,wallposts.secure_id,wallposts.reshared,wallposts.group_id,
wallposts.totaluploads,wallposts.WallUploadID,wallposts.type,
wallposts.value,wallposts.media,wallposts.youtube,wallposts.post_type,
wallposts.privacy,wallposts.tagedpersons,wallposts.with_friends_tagged,
wallposts.emotion_head,wallposts.selected_emotion,wallposts.title,
wallposts.url,wallposts.description,wallposts.cur_image,
wallposts.uip,wallposts.likes,wallposts.userid,
wallposts.posted_by,wallposts.post as postdata,wallusers.*,
UNIX_TIMESTAMP() - wallposts.date_created AS TimeSpent,
PosterTable.mem_pic as posterPic,
PosterTable.gender as posterGender,
PosterTable.oauth_uid as poster_oauth_uid,
PosterTable.username as posterUsername,
PosterTable.mem_fname as posterFname,
PosterTable.work as posterWork,
PosterTable.mem_lname as posterLname,
walllikes_track.id as PostLikeFound,
wallposts.date_created
FROM
wallusers,wallusers as PosterTable,
wallposts LEFT JOIN walllikes_track ON wallposts.p_id = walllikes_track.post_id AND walllikes_track.member_id = ".$user_id."
WHERE
wallusers.active = 1
AND PosterTable.active = 1 AND
(wallusers.mem_id IN (".$matches.") OR wallusers.mem_id = ".$user_id.")
AND PosterTable.mem_id = wallposts.posted_by AND wallposts.marked < ".$this->flagNumber."
AND wallusers.mem_id = wallposts.userid )
".$union ."
)
results
order by $ratingQuery desc limit ".$show_more_post.", 10";
// GROUP PRIVACY
// 2 = public,
// 1 = closed,
// 0 = secret
// POSTS PRIVACY
// pub = 1
// annoy = 2
// on newsfeed, show all posts including public, annoymous and even those are not friends. AND wallposts.privacy != 2
$res = mysqli_query($DBConnection, $qry);
return $res;
}
带有评论的表名为＆＃34; wallcomments＆＃34;它有列post_id，Comment_id等。如何在一个查询中加入这两个表，以便我可以返回评论数最多的帖子。我不知道在哪里放入加入条款或选择原因我不知道如何编写它。请帮忙。