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Showing content from https://www.mongodb.com/docs/ruby-driver/current/write/ below:

Write Data to MongoDB - Ruby Driver

On this page, you can see copyable code examples that show common methods you can use to write data to MongoDB by using the Ruby driver.

To learn more about any of the methods shown on this page, see the link provided in each section.

To use an example from this page, copy the code example into the sample application or your own application. Be sure to replace all placeholders in the code examples, such as <connection string>, with the relevant values for your MongoDB deployment.

You can use the following sample application to test the code examples on this page. To use the sample application, perform the following steps:

1. Ensure you have the Ruby driver installed in your Ruby project.

2. Copy the following code and paste it into a new .rb file.

3. Copy a code example from this page and paste it on the specified lines in the file.

1require 'bundler/inline'2gemfile do3  source 'https://rubygems.org'4  gem 'mongo'5end67uri = "<connection string>"89Mongo::Client.new(uri) do |client|10  database = client.use('<database name>')11  collection = database[:<collection name>]1213  1415  16end

The following code shows how to insert a single document into a collection:

document = { field_name: '<field value>' }collection.insert_one(document)

To learn more about the insert_one method, see the Insert Documents guide.

The following code shows how to insert multiple documents into a collection:

documents = [  { field_name: '<field value 1>' },  { field_name: '<field value 2>' }]collection.insert_many(documents)

To learn more about the insert_many method, see the Insert Documents guide.

The following code shows how to update a single document in a collection by creating or editing a field:

filter = { field_name: '<field value>' }update = { <update definition> }collection.update_one(filter, update)

To learn more about the update_one method, see the Update Documents guide.

The following code shows how to update multiple documents in a collection by creating or editing a field:

filter = { field_name: '<field value>' }update = { <update definition> }collection.update_many(filter, update)

To learn more about the update_many method, see the Update Documents guide.

The following code shows how to replace a single document in a collection with a new document:

filter = { field_name: '<field value>' }new_document = { field_name: '<field value>' }collection.replace_one(filter, new_document)

To learn more about the replace_one method, see the Replace Documents guide.

The following code shows how to delete a single document in a collection:

filter = { field_name: '<field value>' }collection.delete_one(filter)

To learn more about the delete_one method, see the Delete Documents guide.

The following code shows how to delete multiple documents in a collection:

filter = { field_name: '<field value>' }collection.delete_many(filter)

To learn more about the delete_many method, see the Delete Documents guide.

The following code shows how to perform multiple write operations in a single bulk operation:

operations = [  { <bulk operation 1> },  { <bulk operation 2> },  { <bulk operation 3> },]collection.bulk_write(operations)

To learn more about the bulk_write method, see the Bulk Write Operations guide.

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