Rails Inflections

Learn a bit about the Inflector in ActiveSupport, and how much of a mess it is.

Unfortunately, the animation that shows all of the pluralization and singularization rules doesn't appear, but you can view them here: https://gist.github.com/3137677

Transcript

1. Rails Singularization Saturday, September 1, 12
2. Pluralization Rails Saturday, September 1, 12
3. Inflections Rails Saturday, September 1, 12
4. Inflections ARE MAGIC Saturday, September 1, 12
5. Inflections ARE MAGIC Saturday, September 1, 12
6. Inflections ARE MAGIC Saturday, September 1, 12
7. ActiveSupport::Inflector Saturday, September 1, 12
8. handles IZATION TITLE ‘2001: a space odyssey’.titleize # => “2001: A Space Odyssey” ActiveSupport::Inflector Saturday, September 1, 12
9. HUMAN ‘shopping_cart_id’.humanize # => “Shopping cart” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
10. ORDINAL 2001.ordinalize # => “2001st” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
11. PARAMETER ‘Só ëxòtîc! Fjørds!’.parameterize # => “so-exotic-fjords” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
12. TABLE ‘KnickKnack’.tableize # => “knick_knacks” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
13. DEMODULE ‘ActiveSupport::Inflector::Inflections’.demodulize # => “Inflections” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
14. DECONSTANT ‘Deeply::Nested::Model’.deconstantize # => “Deeply::Nested” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
15. CONSTANT ‘ActiveSupport’.constantize # => ActiveSupport handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
16. SINGULAR ‘hard drives’.singularize # => “hard drife” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
17. PLURAL ‘cow’.pluralize # => “kine” handles IZATION ActiveSupport::Inflector Saturday, September 1, 12
18. WHY IS THIS HAPPENING WHY DO BAD THINGS HAPPEN TO GOOD PEOPLE Saturday, September 1, 12
19. Saturday, September 1, 12
20. Saturday, September 1, 12
21. IZATION PLURAL isn’t really that hard Saturday, September 1, 12
22. MOST WORDS Add -s internet → internets Saturday, September 1, 12
23. SIBILANT SOUNDS Add -es to words ending in a consonant sibilant sound (-s, -x, -z, -ch, -sh) precious → preciouses Saturday, September 1, 12
24. THE OES RULE Add -es if the word ends in -o preceded by a consonant tomato → tomatoes Saturday, September 1, 12
25. THE IES RULE berry → berries Saturday, September 1, 12
26. Change -y to -ies if the -y is THE IES RULE berry → berries Saturday, September 1, 12
27. Change -y to -ies if the -y is preceded by a consonant THE IES RULE berry → berries Saturday, September 1, 12
28. require 'active_support/inflector/inflections' module ActiveSupport Inflector.inflections do |inflect| inflect.plural(/$/, 's') inflect.plural(/([sxz]|[cs]h)$/i, '\1es') inflect.plural(/([^aeiouy]o)$/i, '\1es') inflect.plural(/([^aeiouy])y$/i, '\1ies') inflect.singular(/s$/i, '') inflect.singular(/(ss)$/i, '\1') inflect.singular(/([sxz]|[cs]h)es$/i, '\1') inflect.singular(/([^aeiouy]o)es$/i, '\1') inflect.singular(/([^aeiouy])ies$/i, '\1y') inflect.irregular('person', 'people') inflect.irregular('child', 'children') inflect.irregular('self', 'selves') inflect.uncountable(%w(series)) end end Saturday, September 1, 12
29. WE GO FROM TO TO Saturday, September 1, 12
30. WE GO FROM TO 21 PLURALIZATION RULES 4 27 SINGULARIZATION RULES 5 7 IRREGULARITIES 3 10 UNCOUNTABLES 1 TO Saturday, September 1, 12
31. WE GO FROM TO 21 PLURALIZATION RULES 4 27 SINGULARIZATION RULES 5 7 IRREGULARITIES 3 10 UNCOUNTABLES 1 TO Saturday, September 1, 12
32. WE GO FROM TO 21 PLURALIZATION RULES 4 27 SINGULARIZATION RULES 5 7 IRREGULARITIES 3 10 UNCOUNTABLES 1 TO Saturday, September 1, 12
33. WE GO FROM TO 21 PLURALIZATION RULES 4 27 SINGULARIZATION RULES 5 7 IRREGULARITIES 3 10 UNCOUNTABLES 1 TO Saturday, September 1, 12
34. Rails Inflections A Cautionary Tale Saturday, September 1, 12
35. davidcelis/ Inflections Saturday, September 1, 12
36. That’s it? Saturday, September 1, 12
37. That’s it? NO Saturday, September 1, 12
38. COMING SOON TO EDGE RAILS Saturday, September 1, 12
39. ActiveSupport::Inflector GOES GLOBAL Saturday, September 1, 12
40. module ActiveSupport Inflector.inflections(:en) do |inflect| # english rules go here end end module ActiveSupport Inflector.inflections(:es) do |inflect| # spanish rules go here end end >> 'person'.pluralize(:en) => “people” >> 'avión'.pluralize(:es) => “aviones” >> 'avión'.pluralize(:en) => “avións” Saturday, September 1, 12
41. davidcelis/ Inflections Saturday, September 1, 12
42. davidcelis/ Inflections Saturday, September 1, 12
43. Currently Supported: Saturday, September 1, 12
44. Currently Supported: • English Saturday, September 1, 12
45. Currently Supported: • English • Spanish Saturday, September 1, 12
46. Currently Supported: • English • Spanish • YEP Saturday, September 1, 12
47. YOUR LANGUAGES GIVE THEM TO ME Saturday, September 1, 12
48. @davidcelis Saturday, September 1, 12