Eloquent 集合

use App\Models\User;

$users = User::where('active', true)->get();

foreach ($users as $user) {
    echo $user->name;
}

$users->append('team');
$users->append(['team', 'is_admin']);

$users = $users->withoutAppends();
$users = $users->setAppends(['is_admin']);

use App\Models\User;

$users->contains(1);
$users->contains(User::find(1));

$subset = User::whereIn('id', [1, 2, 3])->get();

$users->diff($subset);
$users->intersect($subset);

$users->except([1, 2, 3]);
$users->only([1, 2, 3]);

$users = User::all();

$user = $users->find(1);
$user = $users->findOrFail(1);

$users = $users->fresh();
$users = $users->fresh('comments');

$users->load(['comments', 'posts']);
$users->load('comments.author');
$users->load(['comments', 'posts' => fn ($query) => $query->where('active', 1)]);

$users->loadMissing(['comments', 'posts']);
$users->loadMissing('comments.author');
$users->loadMissing(['comments', 'posts' => fn ($query) => $query->where('active', 1)]);

$users->modelKeys();
// [1, 2, 3, ...]

$users = $users->makeVisible(['address', 'phone_number']);
$users = $users->makeHidden(['address', 'phone_number']);

$users = $users->mergeVisible(['middle_name']);
$users = $users->mergeHidden(['last_login_at']);

$users = $users->setVisible(['id', 'name']);
$users = $users->setHidden(['email', 'password', 'remember_token']);

$partition = $users->partition(fn ($user) => $user->age > 18);

dump($partition::class);    // Illuminate\Support\Collection
dump($partition[0]::class); // Illuminate\Database\Eloquent\Collection
dump($partition[1]::class); // Illuminate\Database\Eloquent\Collection

use App\Models\User;

// 首先取出满足条件的用户
$vipUsers = User::where('status', 'VIP')->get();

// 只对集合内的对象进行批量更新
$vipUsers->toQuery()->update([
    'status' => 'Administrator',
]);

$users = $users->unique();

<?php

namespace App\Models;

use App\Support\UserCollection;
use Illuminate\Database\Eloquent\Attributes\CollectedBy;
use Illuminate\Database\Eloquent\Model;

#[CollectedBy(UserCollection::class)]
class User extends Model
{
    // ...
}

<?php

namespace App\Models;

use App\Support\UserCollection;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    public function newCollection(array $models = []): Collection
    {
        $collection = new UserCollection($models);

        if (Model::isAutomaticallyEagerLoadingRelationships()) {
            $collection->withRelationshipAutoloading();
        }

        return $collection;
    }
}