Laravel: ORM retrieving data ordered by related table - laravel

Question

I am creating simple messenger for Laravel 4, with fuctionality pretty same as Facebook messenger. I have problem making Eloquent query to list latest messages with threads for currently logged user.
Consider I have the following DB tables for messenger (there is also users table):
+-----------+ +--------------+ +----------------+ +----------------+ +-----+
|threads | |thread_users | |messages | |messages_status | |users|
+-----------+ +--------------+ +----------------+ +----------------+ +-----+
|id | |id | |id | |id | |id |
|title | |thread_id | |thread_id | |user_id | |name |
|created_at | |user_id | |sender_id (user)| |message_id | +-----+
|deleted_at | |created_at | |content | |deleted_at |
+-----------+ |deleted_at | |created_at | +----------------+
+--------------+ +----------------+
DB explanation:
When user writes first message he creates thread. All users added to thread are listed in thread_users table. Message submitted to thread are stored in messages table, which is linked to messages_status table where i'm storing info if user deleted particular message from thread for his account.
Laravel models (i have removed SoftDeletingTrait to make it clear):
class threads extends \Eloquent {
protected $table = 'threads';
public function participants() {
return $this->hasMany('messengerThreadUsers', 'thread_id', 'id');
}
public function userParticipation() {
return $this->hasOne('threadUsers', 'thread_id', 'id')->where('user_id', '=', Auth::user()->id);
}
public function messages() {
return $this->hasMany('message', 'thread_id', 'id');
}
public function lastMessage() {
return $this->hasOne('message', 'thread_id', 'id')->latest();
}
}
class threadUsers extends \Eloquent {
protected $table = 'thread_users';
}
class message extends \Eloquent {
protected $table = 'messages';
public function statuses() {
return $this->hasMany('messageStatus', 'message_id', 'id');
}
public function thread() {
return $this->hasOne('threads', 'id', 'thread_id');
}
}
class messageStatus extends \Eloquent {
protected $table = 'messages_status';
public function message() {
return $this->hasOne('message', 'id', 'message_id');
}
public function thread() {
return $this->hasOne('threads', 'id', 'thread_id');
}
}
Now i want to make query that return 5 most recent messages (ordered by message creation date) together with threads, for currently logged user, but where message_status.deleted_at is NULL.
So far i've got this:
$this->threads->select(\DB::raw('threads.*'))
->with('lastMessage')
->has('userParticipation')
->join('messages', 'messages.thread_id', '=', 'threads.id')
->orderBy('messages.created_at', 'DESC')
->paginate(5);
But it keeps returning me dupicate threads. In DB i have 2 threads:
thread #1 have 2 messages in it
thread #2 have 1 message in it
output below:
0 =>
array (size=5)
'id' => int 10
'title' => string 'THREAD 1' (length=8)
'deleted_at' => null
'created_at' => string '2015-07-06 14:20:03' (length=19)
'last_message' =>
array (size=7)
'id' => int 11
'sender_id' => int 12
'thread_id' => int 10
'content' => string 'MSG 1 in thread 1' (length=129)
'created_at' => string '2015-07-07 19:36:52' (length=19)
1 =>
array (size=5)
'id' => int 10
'title' => string 'THREAD 1' (length=8)
'deleted_at' => null
'created_at' => string '2015-07-06 14:20:03' (length=19)
'last_message' =>
array (size=7)
'id' => int 11
'sender_id' => int 12
'thread_id' => int 10
'content' => string 'MSG 1 in thread 1' (length=129)
'created_at' => string '2015-07-07 19:36:52' (length=19)
2 =>
array (size=5)
'id' => int 10
'title' => string 'THREAD 2' (length=8)
'deleted_at' => null
'created_at' => string '2015-07-06 14:25:13' (length=19)
'last_message' =>
array (size=7)
'id' => int 11
'sender_id' => int 12
'thread_id' => int 10
'content' => string 'MSG 1 in thread 2' (length=129)
'created_at' => string '2015-07-07 19:56:22' (length=19)