Tricks That Rails Didn't Tell You About
summary
Shows concrete Rails features and exact code outcomes: reversible migrations instead of verbose change_column, merging model scopes to avoid duplicated where clauses, where.not for clear negation, choosing includes vs preload vs joins to control queries, using pluck/distinct for lightweight selects, to_param slugging and its truncation, present vs exists to avoid extra queries, ActiveModel::Model for form objects, mailer i18n helpers for subjects, content_tag :for and partial locals hash, console helpers and sandbox, and rails:update to diff and install new config files.
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chapters (14)
- 0:00Start
- 8:43migrations: change column null
- 9:54migrations: change column default
- 14:16eager load strategies
- 20:54benchmark
- 22:56ActiveModel:Model
- 26:47content_tag_for
- 27:44render empty collections
- 28:33partial locals
- 31:47exceptions handling
- 33:30application console helpers
- 34:05console sandbox
- 34:59custom annotations
- 35:35rails update
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