What Ruby and Rails Developers Ought To Know?

Question

What should know the Entry Level, Mid-level, Senior Developer? Theoretical knowledge, development tools, gems and more. What issues are usually at the interview?

Answer 1

How to setup and deploy Rails apps to production environment

Answer 2

Senior

• Analyse and profile an application for performance and memory issues
• Analyses and profile an application for security issues
• Understand database modeling and query analysis
• Tune a production deployment (Passenger, Thin, Apache etc)
• Understand and use Ruby metaprogramming
• Mentoring skills
• Communication skills
• Planning and Estimation

Mid-level

• Setup and deploy a Rails App for production
• Understand the Rails stack - callbacks, filters, plugins, engines, gems, rack
• Understand and use Active Record associations
• Understand and use scopes to define model abstractions
• Define tests using Cucumber and rSpec
• Understand and use Object Orientation
• Understand and use Design Patterns (explain what they are, know some basic patterns)

Entry Level

• Create and setup a Rails environment
• Use generators to create models, controllers and migrations
• Create and use a migration to manage the database
• Create a unit test using rspec/etc
• Create a model and basic validations
• Handle a GET request using a Controller, Model, and View
• Handle a POST request using a Controller, Model, and View
• Basic HTML, CSS and JavaScript
• Basic GIT - clone, commit, push

Answer 3

Understand ruby blocks and iterators for traversing and manipulating datasets.