Datastructure:

Document:
{
  "projects": {
    "projectName" : String,
    "employees": [String]
  }
}

Now i want to find a document which has a project with name "project1" and an employee "employee1".

When i try to query by only one property from the nested projects object, it seems to be no problem. But as soon as i want also to access the nested array. Queries start to fail.

db.documents.find({'projects': { $elemMatch: { name: "project1", $elemMatch: { employees: 'employee1' } } })

I work with meteor collections, so it looks like this:

Documents.findOne({'projects': { $elemMatch: { name: "project1", $elemMatch: { employees: 'employee1' } } })

I also tried this simple approach:

db.collection.find({
  "projects.projectName": "project1",
  "projects.employees": "employee1"
})

but it didn't work.

EDIT: As J.F. suggested. This Query is correct. But i had a Schema Error. After correcting it, everything worked fine.