Mongo shell: forEach method to iterate over a cursor

‘forEach’ method is used to iterate over a cursor and apply a function to each document from the cursor.

 

Example

db.countryCapitals.find().forEach((doc) => {printjson(doc)})

> db.countryCapitals.find().forEach((doc) => {printjson(doc)})
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed2"),
    "country" : "Afghanistan",
    "city" : "Kabul"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed3"),
    "country" : "Albania",
    "city" : "Tirana"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed4"),
    "country" : "Algeria",
    "city" : "Alger"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed5"),
    "country" : "American Samoa",
    "city" : "Fagatogo"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed6"),
    "country" : "Andorra",
    "city" : "Andorra la Vella"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed7"),
    "country" : "Angola",
    "city" : "Luanda"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed8"),
    "country" : "Anguilla",
    "city" : "The Valley"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ed9"),
    "country" : "Antarctica",
    "city" : null
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3eda"),
    "country" : "Antigua and Barbuda",
    "city" : "Saint John's"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3edb"),
    "country" : "Argentina",
    "city" : "Buenos Aires"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3edc"),
    "country" : "Armenia",
    "city" : "Yerevan"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3edd"),
    "country" : "Aruba",
    "city" : "Oranjestad"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ede"),
    "country" : "Australia",
    "city" : "Canberra"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3edf"),
    "country" : "Austria",
    "city" : "Wien"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee0"),
    "country" : "Azerbaijan",
    "city" : "Baku"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee1"),
    "country" : "Bahamas",
    "city" : "Nassau"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee2"),
    "country" : "Bahrain",
    "city" : "al-Manama"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee3"),
    "country" : "Bangladesh",
    "city" : "Dhaka"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee4"),
    "country" : "Barbados",
    "city" : "Bridgetown"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee5"),
    "country" : "Belarus",
    "city" : "Minsk"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee6"),
    "country" : "Belgium",
    "city" : "Bruxelles [Brussel]"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee7"),
    "country" : "Belize",
    "city" : "Belmopan"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee8"),
    "country" : "Benin",
    "city" : "Porto-Novo"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3ee9"),
    "country" : "Bermuda",
    "city" : "Hamilton"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3eea"),
    "country" : "Bhutan",
    "city" : "Thimphu"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3eeb"),
    "country" : "Bolivia",
    "city" : "La Paz"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3eec"),
    "country" : "Bosnia and Herzegovina",
    "city" : "Sarajevo"
}
{
    "_id" : ObjectId("60bbadbe8251689f64fb3eed"),
    "country" : "Botswana",
    "city" : "Gaborone"
}

 

 

 

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