Tweet
Tweet

Slide 1

Slide 1 text

Practical SOLID with Rails Andrey Savchenko CTO @ Aejis Tuesday, March 19, 13

Slide 2

Slide 2 text

Let’s start the our new, awesome project! Tuesday, March 19, 13

Slide 3

Slide 3 text

class < ActiveRecord::Base belongs_to :company has_many :products has_many :warehouses validates_presence_of :name end Tuesday, March 19, 13

Slide 4

Slide 4 text

Tuesday, March 19, 13

Slide 5

Slide 5 text

10 months later... Tuesday, March 19, 13

Slide 6

Slide 6 text

Tuesday, March 19, 13

Slide 7

Slide 7 text

Tuesday, March 19, 13

Slide 8

Slide 8 text

SOLID Tuesday, March 19, 13

Slide 9

Slide 9 text

SOLID • Single responsibility principle • Open-Closed principle • Liskov substitution principle • Interface segregation principle • Dependency inversion principle Tuesday, March 19, 13

Slide 10

Slide 10 text

SRP • Easy to read • Easy to change • Easy to reuse No god objects Tuesday, March 19, 13

Slide 11

Slide 11 text

Tuesday, March 19, 13

Slide 12

Slide 12 text

Tuesday, March 19, 13

Slide 13

Slide 13 text

Tuesday, March 19, 13

Slide 14

Slide 14 text

Tuesday, March 19, 13

Slide 15

Slide 15 text

Tuesday, March 19, 13

Slide 16

Slide 16 text

Tuesday, March 19, 13

Slide 17

Slide 17 text

Tuesday, March 19, 13

Slide 18

Slide 18 text

Tuesday, March 19, 13

Slide 19

Slide 19 text

Tuesday, March 19, 13

Slide 20

Slide 20 text

Tuesday, March 19, 13

Slide 21

Slide 21 text

PROFIT!? Tuesday, March 19, 13

Slide 22

Slide 22 text

So much objects? NO! Tuesday, March 19, 13

Slide 23

Slide 23 text

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

Slide 24

Slide 24 text

OCP Tuesday, March 19, 13

Slide 25

Slide 25 text

Tuesday, March 19, 13

Slide 26

Slide 26 text

Tuesday, March 19, 13

Slide 27

Slide 27 text

LSP Tuesday, March 19, 13

Slide 28

Slide 28 text

ISP Tuesday, March 19, 13

Slide 29

Slide 29 text

DI Tuesday, March 19, 13

Slide 30

Slide 30 text

Tuesday, March 19, 13

Slide 31

Slide 31 text

Tuesday, March 19, 13

Slide 32

Slide 32 text

Picture with cat Because everyone loves cats <3 Tuesday, March 19, 13

Slide 33

Slide 33 text

Questions? • Twitter: @ptico • Github: @ptico Tuesday, March 19, 13