laravel：如何在一对多关系中使用wherePivot

Question

I have two one to many pairs:
status > orders
status > tickets

orders

id, status_id
1, 5

tickets

id, status_id
1, 2

statuses

id, table,    language_id, key, name
 1, 'orders',  1,          1,   'Pending'
 2, 'orders',  1,          2,   'Processing'
 3, 'orders',  1,          3,   'Shipped'
 4, 'orders',  1,          4,   'Canceled'
 5, 'orders',  1,          5,   'Complete'
 6, 'tickets', 1,          1,   'unanswered'
 7, 'tickets', 1,          2,   'answered'
 8, 'tickets', 1,          3,   'closed'
//unique(['table', 'language_id', 'key'])

In Order Model

public function status()
{
  //ok
  return $this->belongsTo('App\Models\Status', 'status_id', 'key')->where('table', 'orders')->where('language_id', 1);

  //not ok
  return $this->belongsTo('App\Models\Status', 'status_id', 'key')->wherePivot('table', '=', 'orders')->wherePivot('language_id', '=', 1);

}

Controller

$order = \App\Models\Order::find(1);
dd($order->status);

Error message: Column not found: 1054 Unknown column 'pivot' in 'where clause' (SQL: select * from statuses where statuses . key = 5 and pivot = table and pivot = language_id limit 1)

If where() is ok, why there is wherePivot()?
How to use wherePivot correctly?

Answer 1

Try to querying the result just like that :

dd($order->status()->where('language_id', 1));

You can also use a custom method in your model.

There is a package dedicated for those stuffs: Tinker

Answer 2

First of all, the relationship between Order and Status should be better defined in a different table like 'order_status' and relationship between tickets and status be in a table 'ticket_status'

Then you should rather define the relationship like this:

In the Order Model

public function status()
{
  return $this->belongsToMany('App\Status', 'order_status’, status_id', ‘order_id’)->withPivot('language_id');
} 

Then call it like this:

App\Order::find(1)->status()->wherePivot(‘language_id’, 1)->get();

Hope it works.. Typing from my phone