Question

我想问一下是否可以一次在多个集合上使用where方法。更好的说，可以以某种方式来简化此代码吗？非常感谢。

$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]);
}

方法posts（）看起来像这样：

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

您可以使用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));
    }
}

在您的控制器中（或使用此代码的任何地方）

$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]);
}

Answer 2

您可以使用groupBy对结果进行分组

$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();

这将以数组的形式返回帖子和myposts的计数，按周排序。您需要将两个数组合并以拥有您的数组，但这是一种获取帖子数的更简洁的方法。

免责声明：尚未对其进行实时测试，但它应该可以工作

Laravel一次出现在多个集合中

2 个答案: