Modify Documents

1
// Update a document
2
3
import { MongoClient } from "mongodb";
4
5
// Replace the uri string with your MongoDB deployment's connection string
6
const uri = "<connection string uri>";
7
8
const client = new MongoClient(uri);
9
10
async function run() {
11
  try {
12
    const database = client.db("sample_mflix");
13
    const movies = database.collection("movies");
14
15
    // Create a filter for movies with the title "Random Harvest"
16
    const filter = { title: "Random Harvest" };
17
18
    /* Set the upsert option to insert a document if no documents match
19
    the filter */
20
    const options = { upsert: true };
21
22
    // Specify the update to set a value for the plot field
23
    const updateDoc = {
24
      $set: {
25
        plot: `A harvest of random numbers, such as: ${Math.random()}`
26
      },
27
    };
28
29
    // Update the first document that matches the filter
30
    const result = await movies.updateOne(filter, updateDoc, options);
31
    
32
    // Print the number of matching and modified documents
33
    console.log(
34
      `${result.matchedCount} document(s) matched the filter, updated ${result.modifiedCount} document(s)`,
35
    );
36
  } finally {
37
    // Close the connection after the operation completes
38
    await client.close();
39
  }
40
}
41
// Run the program and print any thrown errors
42
run().catch(console.dir);

1
// Update a document
2
3
import { MongoClient } from "mongodb";
4
5
// Replace the uri string with your MongoDB deployment's connection string
6
const uri = "<connection string uri>";
7
8
const client = new MongoClient(uri);
9
10
// Define the Movie interface
11
interface Movie {
12
  plot: string;
13
  title: string;
14
}
15
16
async function run() {
17
  try {
18
    const database = client.db("sample_mflix");
19
    const movies = database.collection<Movie>("movies");
20
21
    /* Update a document that has the title "Random Harvest" to have a
22
    plot field with the specified value */
23
    const result = await movies.updateOne(
24
      { title: "Random Harvest" },
25
      {
26
        $set: {
27
          plot: `A harvest of random numbers, such as: ${Math.random()}`,
28
        },
29
      },
30
      /* Set the upsert option to insert a document if no documents
31
      match the filter */
32
      { upsert: true }
33
    );
34
35
    // Print the number of matching and modified documents
36
    console.log(
37
      `${result.matchedCount} document(s) matched the filter, updated ${result.modifiedCount} document(s)`
38
    );
39
  } finally {
40
    // Close the connection after the operation completes
41
    await client.close();
42
  }
43
}
44
// Run the program and print any thrown errors
45
run().catch(console.dir);

1
/* Update multiple documents */
2
3
import { MongoClient } from "mongodb";
4
5
// Replace the uri string with your MongoDB deployment's connection string
6
const uri = "<connection string uri>";
7
8
const client = new MongoClient(uri);
9
10
async function run() {
11
  try {
12
    // Get the "movies" collection in the "sample_mflix" database
13
    const database = client.db("sample_mflix");
14
    const movies = database.collection("movies");
15
16
    // Create a filter to update all movies with a 'G' rating
17
    const filter = { rated: "G" };
18
19
    // Create an update document specifying the change to make
20
    const updateDoc = {
21
      $set: {
22
        random_review: `After viewing I am ${
23
          100 * Math.random()
24
        }% more satisfied with life.`,
25
      },
26
    };
27
    // Update the documents that match the specified filter
28
    const result = await movies.updateMany(filter, updateDoc);
29
    console.log(`Updated ${result.modifiedCount} documents`);
30
  } finally {
31
    // Close the database connection on completion or error
32
    await client.close();
33
  }
34
}
35
run().catch(console.dir);

1
/* Update multiple documents */
2
3
import { MongoClient } from "mongodb";
4
5
// Replace the uri string with your MongoDB deployment's connection string.
6
const uri = "<connection string uri>";
7
8
const client = new MongoClient(uri);
9
10
enum Rating {
11
  G = "G",
12
  PG = "PG",
13
  PG_13 = "PG-13",
14
  R = "R",
15
  NR = "NOT RATED",
16
}
17
18
// Create a Movie interface
19
interface Movie {
20
  rated: Rating;
21
  random_review?: string;
22
}
23
24
async function run() {
25
  try {
26
    // Get the "movies" collection in the "sample_mflix" database
27
    const database = client.db("sample_mflix");
28
    const movies = database.collection<Movie>("movies");
29
30
    // Update all documents that match the specified filter
31
    const result = await movies.updateMany(
32
      { rated: Rating.G },
33
      {
34
        $set: {
35
          random_review: `After viewing I am ${
36
            100 * Math.random()
37
          }% more satisfied with life.`,
38
        },
39
      }
40
    );
41
    console.log(`Updated ${result.modifiedCount} documents`);
42
  } finally {
43
    // Close the database connection on completion or error
44
    await client.close();
45
  }
46
}
47
run().catch(console.dir);