php - laravel many to many polymorphic relationship with custom foreign key

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--------+ **id** |**id** |**account_id** | location_id | | | locationable_id | | | locationable_type| | ||||public function locations() { return $this->morphToMany(Location::class, 'locationable','locationable'); }|||public function accountDoctors() { return $this->morphedByMany(AccountDoctor::class, 'locationable','locationable'); }

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Solution:

The relationship definitions should be as below

class AccountDoctor extends Model
{
    public function locations()
    {
        return $this->morphToMany(
            Location::class, 
            'locationable',     //name for the morphable
            'locationables',    //pivot table
            'locationable_id',  //foreign key on the pivot table to identify this model record
            'location_id',      //foreign key on the pivot table to identify related model record
            'account_id',       //primary key column name for this model's table
            'id'                //primary key column name for related model's table
        );
    }
}
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And

class Location extends Model
{
    public function account_doctors()
    {
        return $this->morphedByMany(
            AccountDoctor::class, 
            'locationable',     //name for the morphable 
            'locationables',    //pivot table 
            'location_id',      //foreign key on the pivot table to identify this model record 
            'locationable_id',  //foreign key on the pivot table to identify related model record 
            'id',               //primary key column name for this model's table
            'account_id'        //primary key column name for related model's 
        );
    }
}
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