What Ruby and Rails Developers Ought To Know?

Question

What should someone know as an Entry Level, Mid-level, and Senior Developer working with Rails? Across the board: theoretical knowledge, development tools, gems and more. What issues usually are at the interview?

Are you only interested in criteria for rails developers, or are you also interested in developers using plain old ruby objects? — Andrew Grimm, Apr 05 '10 at 23:39
Is that a joke or did `subjective` actually used to be a tag? — temporary_user_name, Aug 28 '13 at 06:02

Toby Hede · Accepted Answer · 2010-04-03T09:57:07.773

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

This is a very good list, I would add model validation to the Entry Level or Mid-Level sections. I've found that writing validations first when creating a resource helps you think critically about your application and its data early in the development process. — Patrick Klingemann, Apr 03 '10 at 02:24
Thats a pretty damn good list for anyone regardless of language. Understand your application stack. Understand the build system. Understand your test tools. Understand profiling tools. Etc. However I would recommend scrapping CSS and going straight for SASS. The power of sass is so great that while its still CSS, its like assembly vs c really. — Dmitriy Likhten, May 12 '11 at 04:28

score 12 · Answer 2 · answered Jun 10 '13 at 02:52

I wrote down some questions and answers that I have experienced from my interviews and some additional logic questions that you might find useful.

Here it is: http://anilpunjabi.tumblr.com/post/25948339235/ruby-and-rails-interview-questions-and-answers

Enjoy !!!

score 1 · Answer 3 · edited Mar 06 '14 at 13:48

1

I think for the seniority level you should be able to answer most of the following questions:

Here is my blog link.

edited Mar 06 '14 at 13:48

AnkitG

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answered Feb 28 '12 at 13:37

hosam ebrahim

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score 0 · Answer 4 · answered Apr 02 '10 at 23:14

0

How to setup and deploy Rails apps to production environment

answered Apr 02 '10 at 23:14

Joshua Partogi

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score 0 · Answer 5 · answered Apr 03 '10 at 18:52

0

Understand ruby blocks and iterators for traversing and manipulating datasets.

answered Apr 03 '10 at 18:52

scaney

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What Ruby and Rails Developers Ought To Know?

5 Answers5

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