咨询：创建Rails关系ERD图所使用的工具是什么？

Hey there! The tool you're looking for — the one commonly referenced in Rails documentation to generate those clean relationship ERD diagrams — is rails-erd, a dedicated Ruby gem built specifically for Rails applications.

Here's a quick breakdown of how you'd use it, just like the docs demonstrate:

• Add the gem to your Gemfile (typically in the development group):

  group :development do
    gem 'rails-erd'
  end
  

• Run bundle install to install the gem
• Generate the ERD with this command:

  rails erd
  

By default, it creates a PDF of your database schema, but you can adjust options to output SVG, PNG, or other formats if you prefer. It automatically pulls in all your model associations, table structures, and relationships to build that clear visual you're aiming for.

内容的提问来源于stack exchange，提问作者Ian McAteer