Practical SOLID with Rails

Ruby Meditation s.1, e.1, Kiev

1. Practical SOLID with Rails Andrey Savchenko CTO @ Aejis Tuesday, March 19, 13
2. Let’s start the our new, awesome project! Tuesday, March 19, 13
3. class < ActiveRecord::Base belongs_to :company has_many :products has_many :warehouses validates_presence_of :name end Tuesday, March 19, 13
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5. 10 months later... Tuesday, March 19, 13
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8. SOLID Tuesday, March 19, 13
9. SOLID • Single responsibility principle • Open-Closed principle • Liskov substitution principle • Interface segregation principle • Dependency inversion principle Tuesday, March 19, 13
10. SRP • Easy to read • Easy to change • Easy to reuse No god objects Tuesday, March 19, 13
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21. PROFIT!? Tuesday, March 19, 13
22. So much objects? NO! Tuesday, March 19, 13
23. YES! • https://github.com/drapergem/draper • https://github.com/mbj/aequitas • https://github.com/Ptico/resourced • https://github.com/bogdan/datagrid Tuesday, March 19, 13
24. OCP Tuesday, March 19, 13
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27. LSP Tuesday, March 19, 13
28. ISP Tuesday, March 19, 13
29. DI Tuesday, March 19, 13
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32. Picture with cat Because everyone loves cats <3 Tuesday, March 19, 13
33. Questions? • Twitter: @ptico • Github: @ptico Tuesday, March 19, 13