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- Tutorials
- Text Search
Text Search
Use the $text operator to perform text searches on fields which have a text index.
To create a text index on a collection, pass a document containing
the name of the field to be indexed with the value ‘text’ to the
createIndex()
method.
function createTextIndex(db, callback) {
// Get the restaurants collection
const collection = db.collection('restaurants');
// Create the index
collection.createIndex(
{ name : "text" }, function(err, result) {
console.log(result);
callback(result);
});
};
const MongoClient = require('mongodb').MongoClient;
const assert = require('assert');
// Connection URL
const url = 'mongodb://localhost:27017';
// Database Name
const dbName = 'myproject';
// Create a new MongoClient
const client = new MongoClient(url);
// Use connect method to connect to the Server
client.connect(function(err, client) {
assert.equal(null, err);
console.log("Connected correctly to server");
const db = client.db(dbName);
createTextIndex(db, function() {
client.close();
});
});
The following example assumes that a database called test
has a
collection called restaurants
, with a text index on the name
field.
A sample dataset
is available for download.
function findDocuments(db, callback) {
// Get the documents collection
const collection = db.collection('restaurants');
// Find some documents
collection.find({ '$text': {'$search' : 'Garden' } } ).toArray(function(err, docs) {
assert.equal(err, null);
console.log("Found the following records");
console.log(docs);
callback(docs);
});
}
// use the findDocuments() function
const MongoClient = require('mongodb').MongoClient;
const assert = require('assert');
// Connection URL
const url = 'mongodb://localhost:27017';
// Database Name
const dbName = 'myproject';
const client = new MongoClient(url);
// Use connect method to connect to the Server
client.connect(function(err, client) {
assert.equal(null, err);
console.log("Connected correctly to server");
const db = client.db(dbName);
findDocuments(db, function() {
client.close();
});
});
For more information about the $text
operator and its options, see the
manual entry.
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