嘿,我对Laravel有问题。我尝试通过联系表选择有我选择的城市的地方。
我的模特课程: 地方课程:
class Places extends Eloquent {
public function contacts()
{
return $this->hasOne('Contacts');
}
public function clubs()
{
return $this->hasOne('Clubs');
}
}
联系人课程:
class Contacts extends Eloquent {
public function cities()
{
return $this->hasOne('Cities');
}
}
城市类:
class Cities extends Eloquent {
}
我的查询:
$view->clubs = Places::whereHas('contacts',function ($q) use($city_id){
$q->where('contacts', function ($q) use($city_id){
$q->where('id', $city_id);
});
})->get();
错误消息:
MySQL服务器版本,在第1行的'
id
=?))> = 1'附近使用正确的语法(SQL:select * fromplaces
where(select count(*)来自contacts
其中contacts
。places_id
=places
。id
和contacts
=(select * whereid
= 2223)) > = 1)
我知道它“遗漏”来自citites
,但我不知道如何实现它。
答案 0 :(得分:12)
您有3个使用关系的选项:
1个最直接的解决方案:
Places::whereHas('contacts',function ($q) use ($city_id){
$q->whereHas('cities', function ($q) use ($city_id){
$q->where('id', $city_id);
});
})->get();
2与上述相同,但使用此PR:https://github.com/laravel/framework/pull/4954
Places::whereHas('contacts.cities', function ($q) use ($city_id){
$q->where('id', $city_id);
})->get();
3使用hasManyThrough
关系:
// Place model
public function cities()
{
return $this->hasManyThrough('City', 'Contact');
}
// then
Places::whereHas('cities',function ($q) use ($city_id){
$q->where('cities.id', $city_id);
})->get();
使用您的架构很明显,没有任何建议或您的原始设置可以正常工作。
这是一个多对多关系,在Eloquent中是belongsToMany
:
// Places model
public function cities()
{
return $this->belongsToMany('Cities', 'contacts', 'places_id', 'cities_id')
->withPivot( .. contacts table fields that you need go here.. );
}
// Cities model
public function places()
{
return $this->belongsToMany('Places', 'contacts', 'cities_id', 'places_id')
->withPivot( .. contacts table fields that you need go here.. );
}
然后你可以调用这样的关系:
$city = Cities::first();
$city->places; // collection of Places models
// contacts data for a single city-place pair
$city->places->first()->pivot->open_hours; // or whatever you include in withPivot above
现在,还有另一种设置方式,以防您需要Contacts
模型本身:
// Places model
public function contact()
{
return $this->hasOne('Contacts', 'places_id');
}
// Contacts model
public function city()
{
return $this->belongsTo('Cities', 'cities_id');
}
public function place()
{
return $this->belongsTo('Places', 'places_id');
}
// Cities model
public function contact()
{
return $this->hasOne('Contacts', 'cities_id');
}
然后:
$city = Cities::first();
$city->contact; // Contacts model
$city->contact->place; // Places model
hasManyThrough
根本没有在这里工作
答案 1 :(得分:0)
如果你知道城市id,你可以从中找到相应的地方,你可以从城市开始并回到这个地方。为此,您需要定义关系的反转。
// Add this function to your Cities Model
public function contact()
{
return $this->belongsTo('Contact');
}
// Add this function to your Contacts Model
public function place()
{
return $this->belongsTo('Places');
}
现在您可以查询城市并找到地方。
$place = Cities::find($city_id)->contact->place;
修改强> 在函数中添加了缺失的返回
答案 2 :(得分:-1)
SELECT * from pemeriksaan_ginekologi_iva where id in
(
SELECT m1.id
FROM pemeriksaan_ginekologi_iva m1 LEFT JOIN pemeriksaan_ginekologi_iva m2
ON (m1.id_klien = m2.id_klien AND m1.id < m2.id)
WHERE m2.id IS NULL
) and id_klien in (select id from klien where id_kelurahan =1)
AND (hasil_periksa='IVA Negatif / Normal') traslate to laravel