mongodbHow to use MongoDB push?

MongoDB push is a method used to add new elements to an array field in a MongoDB document. It is used to add elements to the end of an array.

Example code

db.collection.update(
   { _id: 1 },
   { $push: { array_field: "new_element" } }
)

Output example

WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

Code explanation

• db.collection.update: This is the MongoDB command used to update a document in a collection.
• { _id: 1 }: This is the filter used to identify the document to be updated.
• { $push: { array_field: "new_element" } }: This is the update operator used to add a new element to the end of an array field.
• WriteResult: This is the output of the command, indicating that the document was successfully updated.

Helpful links

• MongoDB Documentation - $push

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