Laravel where on multiple collections at once - php

Question

I'd like to ask whether is possible to use where method on multiple collections at once.. better to say, is possible to symplify this code somehow, please? Thank you so much.
$posts_per_weeks = array();
for($i = 10; $i > 0; $i--) {
$my_posts = $user->posts()
->where('created_at', '>', Carbon::now()->subWeek($i))
->where('created_at', '<=', Carbon::now()->subWeek($i-1))
->count();
$all_posts = Post::all()
->where('created_at', '>', Carbon::now()->subWeek($i))
->where('created_at', '<=', Carbon::now()->subWeek($i-1))
->count();
array_push($posts_per_weeks, [$my_posts, $all_posts - $my_posts]);
}
Method posts() looks like this:
public function posts()
{
if($this->hasAnyRole('broker|super-agent')) {
$posts = $this->teams()->get()->map(function ($team) {
return $team->posts->all();
});
if($this->hasRole('broker')) {
$posts->push($this->hasMany('App\Post', 'broker_id')->get());
}
return $posts->collapse()->unique();
} elseif($this->hasRole('admin')) {
return Post::all();
} else {
return $this->hasMany('App\Post', 'agent_id')->get();
}
}

Answer 1

You can use groupByto group the results
$maxWeeksBack = 10;
$myPostCount = $user->posts()->where('created_at', '>', Carbon::now()->subWeek($maxWeeksBack))
->select('id', DB::raw('count(*) as total'))
->groupBy(DB::raw('WEEK(created_at)'))
->get();
$postCount = Post::where('created_at', '>', Carbon::now()->subWeek($maxWeeksBack))
->select('id', DB::raw('count(*) as total'))
->groupBy(DB::raw('WEEK(created_at)'))
->get();
This returns the count of posts and myposts as an array, sorted by week. You would need to merge the two arrays to have your array, but this is a much cleaner approach to get the count of the posts.
DISCLAMER: Haven't tested it live, but it should work

Answer 2

You could use QueryScopes.
Post.php
class Post
{
public function scopeFromWeek($query, $week) {
return $builder->where('created_at', '>', Carbon::now()->subWeek($week))
->where('created_at', '<=', Carbon::now()->subWeek($week-1));
}
}
In your controller (or wherever you use this code)
$posts_per_weeks = [];
for($i = 10; $i > 0; $i--) {
$my_posts = $user->posts()->fromWeek($i)->count();
$all_posts = Post::fromWeek($i)->count();
array_push($posts_per_weeks, [$my_posts, $all_posts - $my_posts]);
}