How to use `whereDoesntHave` in laravel - laravel

Question

I am trying to fetch users who don't have productions by checking the start date and end date ranges.
$production = Production::find($id);
$users = User::whereDoesntHave('productions', function ($query) {
return $query
->where(function ($q) {
return $q->whereBetween('start_at', [$production->start_at, $production->end_at])
->whereBetween('end_at', [$production->start_at, $production->end_at]);
});
})->get();
//User Production relation
public function productions()
{
return $this->belongsToMany(Production::class)
->withPivot(['created_at', 'updated_at']);
}
This returns users who are already assigned in other productions within current production start date and end date that and I only want to fetch users who has no production assignment within the current date range.

Answer 1

If I understand correctly, you have a Production model instance in the $production variable. You want all users that doesn't have production that overlap with the time range of the $production instance ?
Your current code (pasted from your question):
$production = Production::find($id);
$users = User::whereDoesntHave('productions', function ($query) {
return $query
->where(function ($q) {
return $q->whereBetween('start_at', [$production->start_at, $production->end_at])
->whereBetween('end_at', [$production->start_at, $production->end_at]);
});
})->get();
What you should do :
$production = Production::find($id);
$users = User::whereDoesntHave('productions', function ($query) use($production) {
return $query->whereBetween('start_at', [$production->start_at, $production->end_at])
->orWhereBetween('end_at', [$production->start_at, $production->end_at]);
});
})->get();
I think the key thing here is include both start and end range in the result vith a orWhereBetween condition instead of whereBetween. And don't forget to use the $production variable in the closure ;-)
If this is not what you are trying to do, please comment to explain more precisely what you want to do

Answer 2

You're passing the dates as parameters but you never actually use them,
this is how it should be:
$users = User::whereDoesntHave('productions', function ($query) use ($startDate, $endDate) {
return $query->where(function ($q) use ($startDate, $endDate) {
return $q->whereBetween('start_at', [$startDate,$endDate])
->orWhereBetween('end_at', [$startDate, $endDate]);
});
})
->get();