Thinkphp 6.0关联统计和输出

$list = UserModel::withCount(['profile'])->select([19,20,21]);foreach ($list as $user) {echo $user->profile_count;}

2. 关联统计的输出采用“关联方法名”_ count，这种结构输出；

3. 不单单支持 Count，还有如下统计方法，均可支持；

$list = UserModel::withSum(['profile'], 'status')->select([19,20,21]);foreach ($list as $user) {echo $user->profile_sum.'
';}

$list = UserModel::withSum(['profile'=>'p_s'], 'status')->select([19,20,21]);foreach ($list as $user) {echo $user->p_s.'
';}

$list = UserModel::with('profile')->select();return json($list->hidden(['profile.status']));或：return json($list->hidden(['username','password','profile'=>['status','id']]));

$list->visible(['profile.status'])

$list->append(['book])

来源地址：https://blog.csdn.net/qq_34820433/article/details/129794103