View MongoDB Data

Create a data model

Run the following command from your project root to create a Restaurant model with name, cuisine, and borough fields:

bin/rails g scaffold Restaurant name:string cuisine:string borough:string

This command also creates the controller and view files for the Restaurant model. You can find the directories that contain these files in the app directory of your application.

Retrieve specific documents

The app/controllers/restaurants_controller.rb file contains methods that specify how your app handles different requests. Replace the index method body with the following code:

def index
  @restaurants = Restaurant
      .where(name: /earth/i)
end

This controller method retrieves Restaurant documents in which the value of the name field contains the string "earth". The results are rendered at the /restaurants route by default.

Start your Rails application

Run the following command from the application root directory to start your Ruby web server:

bin/rails s

After the server starts, it outputs the following message indicating that the application is running on port 3000:

=> Booting Puma
=> Rails 8.0.1 application starting in development
=> Run `bin/rails server --help` for more startup options
Puma starting in single mode...
* Puma version: 6.4.3 (ruby 3.2.5-p208) ("The Eagle of Durango")
*  Min threads: 3
*  Max threads: 3
*  Environment: development
*          PID: 66973
* Listening on http://127.0.0.1:3000
* Listening on http://[::1]:3000
* Listening on http://127.0.2.2:3000
* Listening on http://127.0.2.3:3000
Use Ctrl-C to stop

View the restaurant data

Open the URL http://127.0.2.2:3000/restaurants in your web browser. The page shows a list of restaurants and details about each of them:

Rails provides a default interface that allows you to view, edit, and delete models. In the next section, you can learn how to use the interface to interact with MongoDB data.

Note

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