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检索空我有3个数据库:Laravel 5.5嵌套关系
路线: id name
价格:
Id
Route_id
Car_id
汽车:
id
name
我的路线
模型public function rates()
{
return $this->hasMany('App\Rate', 'route_id');
}
我给速率
public function car() {
return $this->belongsTo('App\Car','car_id');
}
模型现在我需要访问车上关系,但是当我做
return $this->route->with('from','to','rates.car')->paginate(74);
我得到空的车关系
{"id":1,"from_id":1,"to_id":2,"distance":400,"created_at":null,"updated_at":null,"from":{"id":1,"name":"\u0410\u043a\u043a\u043e","created_at":null,"updated_at":null,"lat":32.93310000000000314912540488876402378082275390625,"long":35.0827000000000026602720026858150959014892578125},"to":{"id":2,"name":"\u0410\u0440\u0430\u0434","created_at":null,"updated_at":null,"lat":31.261399999999998300381776061840355396270751953125,"long":35.21490000000000009094947017729282379150390625},"rates":[{"id":1,"route_id":1,"car_id":1,"rate":1123,"night_rate":1391,"car":null},{"id":5551,"route_id":1,"car_id":2,"rate":1123,"night_rate":1391,"car":null},{"id":11101,"route_id":1,"car_id":3,"rate":1123,"night_rate":1391,"car":null},{"id":16651,"route_id":1,"car_id":4,"rate":1123,"night_rate":1391,"car":null},{"id":22201,"route_id":1,"car_id":5,"rate":1123,"night_rate":1391,"car":null},{"id":27751,"route_id":1,"car_id":6,"rate":1123,"night_rate":1391,"car":null},{"id":33301,"route_id":1,"car_id":7,"rate":1123,"night_rate":1391,"car":null},{"id":38851,"route_id":1,"car_id":8,"rate":1123,"night_rate":1391,"car":null}]},
$ this-> route用于具有构造函数的控制器。 –
并且利率不被用作数据透视表,有两列我忘了写率和night_rate。但我想访问它嵌套,所以我可以在汽车上得到这样的汽车名称:{id:1,name:'economy'}。我举了一个例子 –
它是一个数据透视表,因为它创建了另外两个表之间的关系。 它们可以包含其他数据。 https://laravel.com/docs/5.5/eloquent-relationships。搜索“检索中间表列”。 – hdifen