There are many ways to achieve this goal. I'll show you an example using query scopes.
In your User
class you have to make a little update:
class User extends Model
{
protected $table = 'user';
public function groups()
{
return $this->belongsToMany(Group::class, 'user_group')
//->withPivot('valid_before'); <-- Remove this
}
}
and create a scope in your Group
model:
class Group extends Model
{
protected $table = 'group';
public $timestamps = false;
public function user()
{
return $this->belongsToMany(User::class, 'user_group');
}
/**
* This scope gets as input the date you want to query and returns the users collection
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @param string $date
* @return \Illuminate\Database\Eloquent\Builder
*/
public function scopeUsersValidBefore($query, $date)
{
return $query->users()->wherePivot('valid_before', '<', $date);
}
}
Now, I imagine you have a GroupController
that somewhere creates a query to retrieve the valid before users. Something like:
// [...]
$users = Group::usersValidBefore($yourDate)->get();
// [...]
If you want to create the query from the other side, I mean you want to use the User model and list all the Users that has a pivot relation with valid_before
populated, than the right approach is creating a UserGroup
intermediate model that can be easily used to create a query.
valid_before
field belong touser
table? If yes, you don't need pivot here. It will be likeselect * from users where valid_before < some_date
– Tarasovych