Perusing the Rails Source Code - A Beginners Guide
summary
Clones the Rails repo, runs its tests and tiny example scripts, and uses method.source_location and byebug to step into runtime paths; shows that find_by is just where.first and that define_method_attribute= creates a temporary aliased method to bypass Ruby name limits; uses git: git log -S and blame -w plus GitHub’s reblame to trace 2011–2016 commits, follows reproduction scripts, attempts fixes, and notes a system tests feature taking six months and reproduction script driven debugging.
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chapters (21)
- 0:00Start
- 1:31Side Effects of Perusing a Real Source Code
- 2:22Magic in Rails
- 3:31Rails Modules
- 4:08Rails Request
- 6:11Guides
- 10:40Introspection Methods
- 12:57Validations
- 13:09Persistence
- 13:33Super Method
- 14:17The Active Record Master Script
- 15:22Active Record Configuration
- 17:23Heisenbugs Debugging Uncertainty Principle
- 17:55Lazy Query
- 19:53Generated Attribute Methods
- 23:48Git Log
- 26:03Vim Fugitive
- 33:27Milestones
- 35:59Resources
- 36:37Pull Request for System Tests
- 37:43Crafting Rails for Applications
