MongoDB: cursor.forEach() method
cursor.forEach
The cursor.forEach() method is used to apply a JavaScript function for each document in a cursor.
The forEach() method has the following prototype form:
db.collection.find().forEach(<function>)
Syntax:
cursor.forEach(function)
Parameters:
Name | Description | Required / Optional |
Type |
---|---|---|---|
function | A JavaScript function to apply to each document from the cursor. The <function> signature includes a single argument that is passed the current document to process. | Required | JavaScript |
Sample document in the restaurants collection:
{
"address": {
"building": "1007",
"coord": [ -73.856077, 40.848447 ],
"street": "Morris Park Ave",
"zipcode": "10462"
},
"borough": "Bronx",
"cuisine": "Bakery",
"grades": [
{ "date": { "$date": 1393804800000 }, "grade": "A", "score": 2 },
{ "date": { "$date": 1378857600000 }, "grade": "A", "score": 6 },
{ "date": { "$date": 1358985600000 }, "grade": "A", "score": 10 },
{ "date": { "$date": 1322006400000 }, "grade": "A", "score": 9 },
{ "date": { "$date": 1299715200000 }, "grade": "B", "score": 14 }
],
"name": "Morris Park Bake Shop",
"restaurant_id": "30075445"
}
.....
Example: MongoDB: cursor.forEach() method
The following example invokes theforEach()method on the cursor returned byfind()to print the name of each restaurant in the collection.
db.restaurants.find().forEach( function(myDoc) { print( "name: " + myDoc.name ); } );
Output:
..... name: Hang # 16 name: Lowkey Lounge Inc. name: Cannelle Lic name: Matcha Cafe Wabi name: New King Work Ny Inc name: Teng Da name: Ocean Xi Lounge Karaoke Inc. name: Malt And Mold name: King Garden name: Vegetarian Choice Restaurant name: Jimbo'S Hamburgers name: Bombay Grill name: Curry Garden name: Asian Time Eatery name: Hollis-Pj Inc name: Hibachi Dumpling name: Sarku Japan Teriyaki And Sushi Express name: Tbaar name: Lao Ma Spicy name: Tbaars name: Tacombi At Ganesvoort Market name: Fouta Halal Food Corp. name: El Grand Chef Restaurant & Pizzeria name: Buttercup Bake Shop name: Bagatelle Kiss & Fly name: The Milton name: Bluestone Lane Coffee name: Beyond Sushi Nyc Inc name: Incredibowl name: Lui'S Sweet Tomatoes Bakery name: Ny Fortune Garden Inc name: Dunkin Donuts name: Steam It Corp name: Dou Man Jiang Bbq Restaurant name: Crustacean Nyc name: Fat Cats Pizza name: Adam Koshary & Grill name: Nueva Nitin Bakery name: Piura name: The Taco Place Inc name: A+ Chinese Restaurant name: Caffe Bean name: Hua Rong name: Lucky Vegetarian name: Lyric Theatre name: Two Boots Park Slope name: Long Wong Bakery Ii, Inc. name: Plant Love House name: Jimbo'S name: Mr. Tony Pizzeria name: Jimbo'S Hamburger name: Columbia University Medical Center Bookstore Cafe name: The Waylon name: Juquila Mexican Cuisine name: Culture 36 name: Bubble Panda name: Joy Burger Bar name: Montague St Bagels name: Papa Johns Pizza/Lawrence Fried Chicken name: Almando Restaurant Inc name: Lola Lola Restaurant & Bar name: Berti Restaurant & Lounge name: Rose Pizza name: Juice Press name: San Gennaro name: Wibar name: Comfort Diner name: Kabirs Bakery name: Bocca Bliss name: Kababish name: China Green Dim Sum Restaurant name: Subway name: New Mombar Inc name: Forcella Pizza Napoli .....
Retrieve the restaurants data from here
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cursor.hasNext() method
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