How to select data with $lookup and filter from related collection (like field)

Hi all,

i have 2 collections :

1. users
   { _id: 1, username: ‘mark’ },
   { _id: 2, username: ‘leon’ },
   { _id: 3, username: ‘leontin’ },

2. data
   {
   _id: ObjectId(‘6675309f82bdfbe3b00febfa’),
   user: 1,
   message: ‘94451 Laos Sweden Iran’,
   }
   {
   _id: ObjectId(‘6675309f82bdfbe3b00febfa’),
   user: 2,
   message: ‘message 22222’,
   },
   {
   _id: ObjectId(‘6675309f82bdfbe3b00febfa’),
   user: 3,
   message: ‘message 3333’,
   }

if i search :

$results = $collectiondata->aggregate([[‘$lookup’ => [“from” =>“users”, “localField” => “user”, “foreignField” => “_id”, “as” => “user_info”]], [‘$match’ => [‘user_info.username’ => ‘leontin’]]])->toArray();

is working good.

But i need to get all result where username like ‘^leo’ .

Any help, thx in advance.

Regards I.

users

db.users.insert({ _id: 1, username: 'mark' });
db.users.insert({ _id: 2, username: 'leon' });
db.users.insert({ _id: 3, username: 'leontin'});

data

db.data.insert(
{
  _id: ObjectId('6675309f82bdfbe3b00febfa'),
  user: 1,
  message: '94451 Laos Sweden Iran',
});
db.data.insert(
{
  _id: ObjectId('6675309f82bdfbe3b00febfb'),
  user: 2,
  message: 'message  22222',
});
db.data.insert( 
{
  _id: ObjectId('6675309f82bdfbe3b00febfc'),
  user: 3,
  message: 'message  3333',
});

if i search :

db.data.aggregate([{‘$lookup’ : {“from” :“users”, “localField” : “user”, “foreignField” : “_id”, “as” : “user_info”}}, {‘$match’ : {‘user_info.username’ : ‘leon’}}]);

is working good.

But i need to get all result where username like ‘^leo’

Any help, thanks in advance.

Regards I.