Python MongoDBInsert Document
Adocument in MongoDB is the same as arecord in SQL databases.
Insert Into Collection
To insert a record, ordocument as it is called in MongoDB, into a collection, we use theinsert_one() method.
The first parameter of theinsert_one() method is a dictionary containing the name(s) and value(s) of each field in the document you want to insert.
Example
Insert a record in the "customers" collection:
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
mydict = { "name": "John", "address": "Highway 37" }
x = mycol.insert_one(mydict)
Return the _id Field
Theinsert_one() method returns a InsertOneResult object, which has a property,inserted_id, that holds the id of the inserted document.
Example
Insert another record in the "customers" collection, and return the value of the_id field:
x = mycol.insert_one(mydict)
print(x.inserted_id)
If you do not specify an_id field, then MongoDB will add one for you and assign a unique id for each document.
In the example above no_id field was specified, so MongoDB assigned a unique _id for the record (document).
Insert Multiple Documents
To insert multiple documents into a collection in MongoDB, we use theinsert_many() method.
The first parameter of theinsert_many() method is a list containing dictionaries with the data you want to insert:
Example
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
mylist = [
{ "name": "Amy", "address": "Apple st 652"},
{ "name": "Hannah", "address": "Mountain 21"},
{ "name": "Michael", "address": "Valley 345"},
{ "name": "Sandy", "address": "Ocean blvd 2"},
{ "name": "Betty", "address": "Green Grass 1"},
{ "name": "Richard", "address": "Sky st 331"},
{ "name": "Susan", "address": "One way 98"},
{ "name": "Vicky", "address": "Yellow Garden 2"},
{ "name": "Ben", "address": "Park Lane 38"},
{ "name": "William", "address": "Central st 954"},
{ "name": "Chuck", "address": "Main Road 989"},
{ "name": "Viola", "address": "Sideway 1633"}
]
x = mycol.insert_many(mylist)
#print list of the _id values of the inserted documents:
print(x.inserted_ids)
Theinsert_many() method returns a InsertManyResult object, which has a property,inserted_ids, that holds the ids of the inserted documents.
Insert Multiple Documents, with Specified IDs
If you do not want MongoDB to assign unique ids for your document, you can specify the _id field when you insert the document(s).
Remember that the values has to be unique. Two documents cannot have the same _id.
Example
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]
mylist = [
{ "_id": 1, "name": "John", "address": "Highway 37"},
{ "_id": 2, "name": "Peter", "address": "Lowstreet 27"},
{ "_id": 3, "name": "Amy", "address": "Apple st 652"},
{ "_id": 4, "name": "Hannah", "address": "Mountain 21"},
{ "_id": 5, "name": "Michael", "address": "Valley 345"},
{ "_id": 6, "name": "Sandy", "address": "Ocean blvd 2"},
{ "_id": 7, "name": "Betty", "address": "Green Grass 1"},
{ "_id": 8, "name": "Richard", "address": "Sky st 331"},
{ "_id": 9, "name": "Susan", "address": "One way 98"},
{ "_id": 10, "name": "Vicky", "address": "Yellow Garden 2"},
{ "_id": 11, "name": "Ben", "address": "Park Lane 38"},
{ "_id": 12, "name": "William", "address": "Central st 954"},
{ "_id": 13, "name": "Chuck", "address": "Main Road 989"},
{ "_id": 14, "name": "Viola", "address": "Sideway 1633"}
]
x = mycol.insert_many(mylist)
#print list of the _id values of the inserted documents:
print(x.inserted_ids)
