Rails development environment talk
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Reuven Lerner is a web developer and consultant who primarily works with Ruby on Rails and PostgreSQL. He teaches Rails courses and uses various tools like iTerm2, RVM, IRB gems, Emacs, Firefox plugins, Growl, and Pow in his development environment. Emacs is his editor of choice, which he has highly customized over the years using Lisp functions and key bindings.
Rails development environment talk
- 1. My Ruby (and Rails) environment Reuven M. Lerner • [email protected] Rails Underground, Israel • July 13th, 2011
- 2. Who am I? • Web developer, software architect, consultant, lecturer/trainer • Linux Journal columnist since 1996 • Mostly Ruby on Rails + PostgreSQL, but also Python, PHP, jQuery, and lots more...
- 3. Want to learn Rails? • I’m teaching a course at Hi-Tech College • Not very far from here! • August 14 - 18 , 2011 th th • (I can do private training as well...)
- 4. Also: • I’m swamped with Ruby work! • Want to help me out? • (I need to sleep!) • Come speak with me after my talk...
- 6. Shell • For years, I used bash • GNU Bourne-Again Shell • I recently switched to zsh • I use the plugin, “oh my zsh” • Did it change my life? No. • But some things are easier
- 7. Better things • Easy-to-customize prompt • Saner history (across terminal tabs) • Automatic updates of oh-my-zsh • One configuration file (.zshrc)
- 8. Things I use often • C-z (suspend) and fg • Emacs keybinding • C-r (reverse search • Customized prompt
- 9. iTerm2 • The OS X terminal is OK • iTerm used to be much better • Recently rewritten as iTerm2 • I use very few of the features • Lots of tabs, though! • My favorites: Search, movie playback
- 10. rvm • Don’t develop in Ruby without rvm • Really, it’s amazing • I use 1.8.7, 1.9.2, and JRuby day to day • Learn about updates! • .rvmrc for each project I work on • Gemsets vs. bundles — bundles are winning
- 11. irb • I use irb (or the Rails console) every day • If you’re programming in Ruby, then you should probably have IRB open always! • Every piece of code I write, more or less, is tried in IRB first • Debugging largely happens for me in IRB
- 12. Gems for IRB! • There has been an explosion of IRB- enhancing gems • I’ll present some of them • Most or all of these are from the “irbtools” gem, which packages them together
- 13. ap • “Awesome print” — and it is! • Data structures look nicer, in color
- 14. Sorted methods! • How often do you write foo.methods.sort • Now you can just write foo.methods
- 15. every_day_irb • Puts shell commands in IRB! ls cat pwd
- 16. ;nil after long evals • Cute trick: If you’re reading a lot of data, add ;nil • to the end of your command, so that IRB won’t print it all.
- 17. hirb • Shows data in a table • Sort of like ap, but for to_s • Better with ActiveRecord output • If you want to disable it (I do by default), just set Hirb::View.disable, or Hirb::View.enable
- 18. methodfinder • Methodfinder.find • Object#find_method "abc".find_method("ABC")
- 19. sketch • Anonymous edits • Named edits • Great with emacsclient (for Emacs users) sketch sketch :foo
- 20. GNU Emacs • One True Editor • I’ve used it since 1988 (yes, 1988!) • More operating system than editor • Configure it in Emacs Lisp • Full, Turing-complete language with oodles of functions for text, files, networks, and psychoanalysis
- 22. Required anti-vi joke Subject: Re: HELP: music for cl, vi, vlc, pi Date: 14 May 1996 10:35:43 +0200 Alan> vi doesn't play music. David> Sure it does. In fact, vi has a special mode just for music. If you are not in insert mode, you are in `beep' mode: whatever you press produces a beep. In the best tradition of vi, there is of course just one note (you know: small is beautiful) but this is just one of those reasons why vi hackers love vi.
- 23. How Emacs works
- 24. How Emacs works Lisp function
- 25. How Emacs works Lisp Key binding function
- 26. How Emacs works Lisp Keystroke Key binding function
- 27. Sounds crazy? • It’s great. • Define functions. Or install packages. • Set bindings (global or modal). • Use control-alt-shift-meta-cokebottle
- 28. Function, binding (defun indent-buffer (&optional which-buffer) "Indents a buffer (default is current)." (interactive "bBuffer to indent: ") (indent-region (point-min) (point-max) nil) (beep) (message "Done indenting")) (global-set-key "ei" 'indent-buffer)
- 29. (add-hook 'ruby-mode-hook '(lambda () (interactive) (inf-ruby-keys) (rainbow-delimiters-mode t) (turn-on-font-lock) (ruby-electric-mode t) (rvm-activate-corresponding-ruby) (if (and (not (null buffer-file-name)) (file-writable-p buffer-file-name) (not (string-match "jruby" rvm-- current-ruby-binary-path))) (flymake-mode)) ))
- 30. Snippets • TextMate fans, rejoice — Emacs has snippets, too! • It has had “abbrevs” forever • Even import TextMate snippets • I don’t use these that much, to be honest
- 31. Intellisense? • Everyone in Israel asks about it! • Emacs has a few options that come close • I’ve used it on a few occasions, but never really liked it
- 32. Flymake • Check your syntax (with a background Ruby process) as you type! • Errors? The line appears in red
- 33. Ruby electric mode • Inserts extra quotes, braces, • Also inserts “end” after class, module, if, etc.
- 34. Rainbow delimiters • Fancy braces! • Each set of parens/braces gets its own color • Lovely when you have a hash
- 35. Rinari • Rinari Is Not A Rails IDE • Keyboard shortcuts to jump to related parts of the code • Tries to be minimal • There’s also emacs-rails — more functionality, but updated less frequently
- 36. ERb and Haml • Handles colorizing, indenting • Flymake works inside of ERb, also!
- 37. Switching buffers • From controllers (C-c ‘ f c) — functional tests (C-c ‘ f t) • Models (C-c ‘ f m) — unit tests (or C-c ‘ f t) • Switch to the log (C-c ‘ f o)
- 38. Tags • Index of names in your files • Jump to the right file/line • Even search/replace • I go back and forth on using tags ... they work really well, but I’m often too lazy, and end up using “git grep”
- 39. Emacs server • If you’re starting Emacs more than once a day, then you’re doing something wrong • Open buffers • Connect from outside • e.g., sketch (from before, in IRB)
- 40. Magit • Use Git from within Emacs! • Stage, Commit, Stash • Branch, Merge • Push, pull • Fully integrated, and works really nicely
- 42. Macros • Record a macro • Replay any number of times • Super-duper useful, especially when converting files
- 43. Firefox plugins • I use Firefox as my main browser • Not the fastest (for now!) • Not updated like Chrome (for now!) • But it has excellent plugins
- 44. Firebug • Everyone’s favorite JavaScript/Ajax debugger • Console • Execute JavaScript • Modify CSS in real time • Truly an amazing piece of software
- 45. Web developer • “View Generated HTML” — my favorite! • Also:View HTTP request, response headers • Mark items with boxes
- 46. Growl • Notification system under OS X • Autotest + Growl gives me nice output for red/green • Just require “autotest/growl” in your ~/.autotest file
- 47. Pow • Finally, I have to run things locally • 37signals recently released Pow for OS X • (There’s talk of doing it for Linux, too) • Super-duper easy: • symlink from ~/.pow/foo to project foo • Now go to http://foo.dev !
- 48. Thanks! (Any questions?) [email protected] http://www.lerner.co.il/ 054-496-8405 “reuvenlerner” on Skype/AIM
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