访问controller的权限通过配置控制:

gem 'cancancan'

机密数据安全通过:

gem 'bcrypt'

接口访问频率
Preventing API abuse and attacks

One essential aspect of building a secure API in Ruby on Rails is taking measures to prevent potential abuse and attacks. One common method to achieve this is by implementing rate limiting. By setting limits on the number of requests a user or an IP address can make within a specific time frame, we can minimize the risk of brute force attacks or overwhelming the server with excessive traffic. Here's a snippet of code that demonstrates how rate limiting can be implemented in Ruby on Rails using the 'rack-attack' gem:

# config/initializers/rack_attack.rb

Rack::Attack.throttle('requests per IP', limit: 100, period: 1.minute) do |request|
  request.ip
end

In the example above, we define a throttle rule named 'requests per IP.' It restricts the number of requests an IP address can make to 100 requests per minute. This simple measure helps protect our API by preventing potential abuse from individual IP addresses.

跨域问题
Setting up CORS policy with rack-cors

Here are the steps to establish a CORS policy that follows the principle of least privilege using the rack-cors gem:

Install rack-cors Gem

First, you need to include the rack-cors gem in your Rails project's Gemfile and run bundle install to install it:

gem 'rack-cors'

Configure CORS in config/application.rb

In your Rails application, you can define CORS policies in the config/application.rb file. Open this file and locate the Rails.application.configure do block. Add the following configuration to set up a basic CORS policy:

config.middleware.insert_before 0, Rack::Cors do
  allow do
    origins 'https://your-allowed-domain.com' # Replace with your production domain
    resource '*', headers: :any, methods: [:get, :post, :put, :patch, :delete]
  end
end