How to pass an array from a query inside a foreach - php

Question

I have the following query that will bring all Auth user friends :
$usrusrmembs = DB::table('usrusrs')
->where('accepted', 1)
->where('user_id', $u_id)
->orwhere('friend_id', $u_id)
->pluck('friend_id', 'user_id');
Next is a foreach to loop the ids received from the above query, get the posts of all Ids, and then sending the result to a blade :
foreach($usrusrmembs as $key => $val){
$rec_users = ($key == $u_id) ? $val : $key;
$f_usrs_psts = DB::table('posts')
->where('posts.user_id', $rec_users)
->get();
}
return view('updates', ['f_posts' => $f_usrs_psts] );
The output in the blade shows only posts of one friend , while ignores the others. I feel there is a problem in the posts query, where it only sends to the blade the last processed ID. If this is the problem, then how can I solve it ?

Answer 1

This is where Laravel really shines. Take advantage of the relationships and do this all in one query with eager loading. I don't know what your model relations are, but something like this:
$usrusrmembs = \App\UserUserModel::where('accepted', 1)
->where('user_id', $u_id)
->orwhere('friend_id', $u_id)
->with('posts')
->get();
If you want more control, you can use a combination of closures and whereHas, but this above should get you close. Then, in your view you can loop on the posts for each:
#foreach($usrusrmembs as $usr)
echo $usr-name // etc
#foreach ($usr->posts as $post)
echo $post->whatever
#endforeach
#endforeach
This is not going to give you exactly what you need, but the idea should help you to work through it and you can skip the whole n+1 issue by removing the foreach loop in your controller.