我很难让一个非常嵌套的关系在laravel中正常工作.
被通缉的行为如下:,
I select an event by ID 和 i want to see which persons are subscribed to it.
这就是有效的查询!
SELECT persons.id,
persons.firstname,
persons.lastname,
event_scores.score
FROM events
JOIN cities
ON cities.id = events.city_id
JOIN companies
ON cities.id = companies.city_id
JOIN persons
ON companies.id = persons.company_id
JOIN event_scores
ON event_scores.person_id = persons.id
WHERE event_scores.event_id = 1
GROUP BY persons.id
These are my relations
事件模型
class Event extends Eloquent
{
protected $table = 'events';
public function city()
{
return $this->belongsTo('City');
}
}
城市模型
class City extends Eloquent
{
protected $table = 'cities';
public function companies()
{
return $this->hasMany('Company');
}
public function event()
{
return $this->hasMany('Event');
}
}
公司模式
class Company extends Eloquent {
protected $table = 'companies';
public function persons()
{
return $this->hasMany('Person');
}
public function city()
{
return $this->belongsTo('City');
}
}
人物模型
class Person extends Eloquent
{
protected $table = 'persons';
public function company()
{
return $this->belongsTo('Company');
}
public function eventscore()
{
return $this->belongsToMany('Event', 'event_scores', 'person_id', 'event_id')
->withPivot('score')
->withTimestamps();
}
}
What I have tried
return Event::with('city')->with('company')->get();
和
return Event::with('city')
->whereHas('companies', function($query) use ($company_id){
$query->where('company_id', $company_id);
})->get();
还有很多其他的可能性,我真的被困在这个问题上了.在laravel中实现这种嵌套关系链接有那么困难吗?
谢谢