ドキュメントの変更

1// Update a document2
3import { MongoClient } from "mongodb";4
5// Replace the uri string with your MongoDB deployment's connection string6const uri = "<connection string uri>";7
8const client = new MongoClient(uri);9
10async 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 match19    the filter */20    const options = { upsert: true };21
22    // Specify the update to set a value for the plot field23    const updateDoc = {24      $set: {25        plot: `A harvest of random numbers, such as: ${Math.random()}`26      },27    };28
29    // Update the first document that matches the filter30    const result = await movies.updateOne(filter, updateDoc, options);31    32    // Print the number of matching and modified documents33    console.log(34      `${result.matchedCount} document(s) matched the filter, updated ${result.modifiedCount} document(s)`,35    );36  } finally {37    // Close the connection after the operation completes38    await client.close();39  }40}41// Run the program and print any thrown errors42run().catch(console.dir);

1// Update a document2
3import { MongoClient } from "mongodb";4
5// Replace the uri string with your MongoDB deployment's connection string6const uri = "<connection string uri>";7
8const client = new MongoClient(uri);9
10// Define the Movie interface11interface Movie {12  plot: string;13  title: string;14}15
16async 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 a22    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: ${Math.random()}`,28        },29      },30      /* Set the upsert option to insert a document if no documents31      match the filter */32      { upsert: true }33    );34
35    // Print the number of matching and modified documents36    console.log(37      `${result.matchedCount} document(s) matched the filter, updated ${result.modifiedCount} document(s)`38    );39  } finally {40    // Close the connection after the operation completes41    await client.close();42  }43}44// Run the program and print any thrown errors45run().catch(console.dir);

1/* Update multiple documents */2
3import { MongoClient } from "mongodb";4
5// Replace the uri string with your MongoDB deployment's connection string6const uri = "<connection string uri>";7
8const client = new MongoClient(uri);9
10async function run() {11  try {12    // Get the "movies" collection in the "sample_mflix" database13    const database = client.db("sample_mflix");14    const movies = database.collection("movies");15
16    // Create a filter to update all movies with a 'G' rating17    const filter = { rated: "G" };18
19    // Create an update document specifying the change to make20    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 filter28    const result = await movies.updateMany(filter, updateDoc);29    console.log(`Updated ${result.modifiedCount} documents`);30  } finally {31    // Close the database connection on completion or error32    await client.close();33  }34}35run().catch(console.dir);

1/* Update multiple documents */2
3import { MongoClient } from "mongodb";4
5// Replace the uri string with your MongoDB deployment's connection string.6const uri = "<connection string uri>";7
8const client = new MongoClient(uri);9
10enum 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 interface19interface Movie {20  rated: Rating;21  random_review?: string;22}23
24async function run() {25  try {26    // Get the "movies" collection in the "sample_mflix" database27    const database = client.db("sample_mflix");28    const movies = database.collection<Movie>("movies");29
30    // Update all documents that match the specified filter31    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 error44    await client.close();45  }46}47run().catch(console.dir);