Laravel 5.2 query scopes unexpected behavior with orWhere - eloquent

Question

I use a query scope that should append a orWhere condition but it appends a normal where (with AND). If I remove the query scope and put it directly it does return the OR condition.
The query looks like this:
$query = MyModel::firstQueryScope()->secondQueryScope();
FirstQueryScope:
public function scopeFirstQueryScope($query){
return $query->where('someAttribute', 0);
}
Second Query Scope:
public function scopeSecondQueryScope($query){
return $query->orWhere('someOtherAttribute', 0);
}
Building the query this way should be the same as:
$query = MyModel::where('someAttribute', 0)->orWhere('someOtherAttribute', 0);
But the first approach returns this query:
select * from MyModelTable where someAttribute = 0 AND (someOtherAttribute = 0).
The second approach returns:
select * from MyModelTable where someAttribute = 0 OR someOtherAttribute = 0
I've have notice two things:
No matter in what order you call FirstQueryScope or SecondQueryScope, it always surrounds the orWhere scope with parenthesis.
The orWhere method only ads the parenthesis when called from the query scope.
What am I doing wrong? or can this be an Eloquent's bug?
Note: the query that I'm building is more elaborated but I've break it down to this simplicity to verify that I'm not doing anything strange.
Update
I try to debug Eloquent's building process and found that it is adding a nested where and inside it the orWhere scope. Again this only happens when putting the orWhere inside an scope but does not happen when adding a simple where. The nested where is the responsable for surrounding the orWhere expression within parenthisis.

Answer 1

I think scopes are isolated by itself.
Simply add a third scope.
public function scopeFirstQueryOrSecondQuery($query){
return $query->where('someAttribute', 0)
->orWhere('someOtherAttribute', 0);
}
-
MyModel::firstQueryOrSecondQuery()->get();