我有一个模型用户,我希望按城市搜索用户,但如果城市变量为null,则需要所有用户
我的代码是这样的
User::where('city', $city)->orderBy('created_at')->paginate(10);
但如果city变量为null,则查询不返回任何内容
我是你的
User::doesntHave('city')->get();
还有这个
User::whereHas('city')->get();
我知道我可以像这样阅读我的代码
if($city){
User::where('city', $city)->orderBy('created_at')->paginate(10);
} else {
User::orderBy('created_at')->paginate(10);
}
但是想在我的查询中添加另一个变量,并不完美
你可以使用where()
closure:
User::where(function ($q) use($city) {
if ($city) {
$q->where('city', $city);
}
})->orderBy('created_at')->paginate(10);
你可以使用when()
:
User::when($city, function ($q) use ($city) {
return $q->where('city', $city);
})->orderBy('created_at')->paginate(10);
3.这样做:
$users = User::orderBy('created_at');
if ($city) {
$users = $users->where('city', $city);
}
$users = $users->paginate(10);