Flash cards
Review the key moves
What is the main idea behind Python MongoDB Insert Document?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
Which statement best captures the main point of this lesson?
Complete the missing token from the example code.
___ pymongoPut the learning moves in the order that makes the concept easiest to apply.
A document in MongoDB is the same as a record in SQL databases.
Insert Into Collection
To insert a record, or document as it is called in MongoDB, into a collection, we use the insert_one() method.
The first parameter of the insert_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:
import pymongo
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
The insert_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:
mydict = { "name": "Peter", "address": "Lowstreet 27" }
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 the insert_many() method.
The first parameter of the insert_many() method is a list containing dictionaries with the data you want to insert:
Example
import pymongo
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)The insert_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
import pymongo
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)