Rails Copilot-AI-powered assistant for Rails developers

Example

When you start typing a method in a Rails model, Rails Copilot can suggest the complete method definition, including proper naming conventions and potential ActiveRecord queries.

Scenario

A developer is creating a new model and needs to write several similar scopes. Instead of writing each from scratch, Rails Copilot autocompletes common patterns, such as querying the database or defining validations.

Example

Rails Copilot can detect common mistakes such as incorrect syntax in routes, missing migrations, or undefined variables in a controller method.

Scenario

While working on a new feature, a developer forgets to run a database migration. Rails Copilot flags this error and provides a suggestion to run `rails db:migrate`, preventing runtime errors.

Example

When identifying code smells, like deeply nested conditionals or duplicated logic, Rails Copilot suggests better approaches, such as moving logic to service objects or refactoring complex methods.

Scenario

A developer notices that a controller method has grown large with multiple conditionals. Rails Copilot suggests extracting a private method or service object, and provides a sample refactor.

Example

Rails Copilot can generate RSpec or Minitest test cases for existing code, ensuring that test coverage is maintained as new features are developed.

Scenario

After implementing a new feature in a controller, the developer runs Rails Copilot, which automatically generates tests for happy path scenarios and potential edge cases, saving time in writing tests manually.

Example

Rails Copilot suggests in-line comments or documentation for methods and classes that lack them, based on the function and parameters used.

Scenario

A developer writes a custom validation in a model without adding a comment. Rails Copilot suggests a comment template describing the purpose and logic behind the validation.