Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
rom 4.0 is coming
Search
Piotr Solnica
July 09, 2017
Programming
3
860
rom 4.0 is coming
Piotr Solnica
July 09, 2017
Tweet
Share
More Decks by Piotr Solnica
See All by Piotr Solnica
[KRUG] Architecture. The reclaimed years.
solnic
2
500
rom-rb 4.0 - Moscow, RailsClub 2017
solnic
3
1.3k
Blending Functional and OO programming in Ruby
solnic
22
2.4k
Deep Dive Into ROM
solnic
7
1.2k
Clean Code Cowboy
solnic
4
1k
Convenience vs Simplicity
solnic
4
1.8k
Micro Libraries FTW
solnic
2
590
DataMapper 2 - an object mapping toolkit
solnic
6
1.1k
Beyond the ORM - RuLu Conf 2012
solnic
1
1.5k
Other Decks in Programming
See All in Programming
CDK引数設計道場100本ノック
badmintoncryer
2
530
Rails Frontend Evolution: It Was a Setup All Along
skryukov
0
310
知って得する@cloudflare_vite-pluginのあれこれ
chimame
1
110
Vibe Codingの幻想を超えて-生成AIを現場で使えるようにするまでの泥臭い話.ai
fumiyakume
18
9k
AWS Summit Japan 2024と2025の比較/はじめてのKiro、今あなたは岐路に立つ
satoshi256kbyte
1
230
副作用と戦う PHP リファクタリング ─ ドメインイベントでビジネスロジックを解きほぐす
kajitack
2
420
NEWT Backend Evolution
xpromx
1
140
MCPで実現できる、Webサービス利用体験について
syumai
4
1.1k
可変変数との向き合い方 $$変数名が踊り出す$$ / php conference Variable variables
gunji
0
220
Startups on Rails in Past, Present and Future–Irina Nazarova, RailsConf 2025
irinanazarova
0
280
なぜあなたのオブザーバビリティ導入は頓挫するのか
ryota_hnk
0
330
11年かかって やっとVibe Codingに 時代が追いつきましたね
yimajo
0
140
Featured
See All Featured
StorybookのUI Testing Handbookを読んだ
zakiyama
30
5.9k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
30
2.2k
Distributed Sagas: A Protocol for Coordinating Microservices
caitiem20
331
22k
Testing 201, or: Great Expectations
jmmastey
43
7.6k
Code Reviewing Like a Champion
maltzj
524
40k
How to Ace a Technical Interview
jacobian
278
23k
We Have a Design System, Now What?
morganepeng
53
7.7k
Being A Developer After 40
akosma
90
590k
Building an army of robots
kneath
306
45k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
Java REST API Framework Comparison - PWX 2021
mraible
31
8.7k
Transcript
ROM-RB 4.0 IS COMING PIOTR SOLNICA >> BRIGHTON RUBY 2017
1
PIOTR SOLNICA > ! Cracow, Poland > github.com/solnic > @_solnic_
> solnic.eu 2
TECH LEAD AT ICELAB 3
WHAT'S ROM-RB? 4
an open-source persistence and mapping toolkit for Ruby built for
speed and simplicity 5
DATABASE-AGNOSTIC, FLEXIBLE, EXTENDIBLE, FAST, SIMPLE 6
FOR REAL ! 7
SOUNDS LIKE SOME CRAZY OBJECT RELATIONAL MAPPER, EH? 8
ROM IS NOT AN ORM 9
WHY DOES IT EVEN EXIST? 10
A TRUE ALTERNATIVE TO ACTIVE RECORD 11
ROM-RB PROVIDES A WAY TO SEPARATE PERSISTENCE CONCERNS FROM APPLICATION
DOMAIN 12
WHAT'S THE DEAL WITH 4.0? 13
RUBYISTS LOVE MAGIC ˾(✿˙ᗜ˙)੭ʓ̤ꚍ.*ꙓꙏꚍ 14
MAGIC AKA: IMPLICIT CODE AKA: EASY TO USE ABSTRACTIONS 15
ACTIVERECORD POSSIBLY THE MOST MAGICAL GEM IN THE UNIVERSE 16
NO BOILERPLATE class User < ActiveRecord::Base end 17
PERSISTENCE, SO SIMPLE user = User.create(name: "Jane") 18
QUERIES, SO SIMPLE User.where(name: "Jane").first 19
MAKING CHANGES, SO SIMPLE User.where(name: "Jane").update_all(name: "Jane Doe") 20
EASE OF USE > Little code to write to get
started > A lot of functionality OOTB > No boilerplate 21
THIS IS A REAL CHALLENGE FOR ROM-RB! 22
> Dynamic query interface > Explicit representation of data structures
> Mapping to struct objects decoupled from the database > No concept of lazy-loadable associations 23
THIS IS FINE 24
WE MADE IT (⊃ꙏ•́‿•̀ꙏ)⊃━☆ꚍ.*ꙓꙏꚍ 25
RELATIONS AND STRUCTS 26
class Users < ROM::Relation[:sql] schema(infer: true) end 27
✅ NO BOILERPLATE 28
users.changeset(:create, name: "Jane").commit # => #<ROM::Struct::User id=1 name="Jane"> 29
✅ PERSISTENCE, SO SIMPLE 30
users.where(name: "Jane").first # => #<ROM::Struct::User id=1 name="Jane"> 31
✅ QUERIES, SO SIMPLE 32
users.where(name: "Jane").changeset(:update, name: "Jane Doe").commit # => #<ROM::Struct::User id=1 name="Jane
Doe"> 33
✅ MAKING CHANGES, SO SIMPLE 34
BUT... 35
users.first # => #<ROM::Struct::User id=1 name="Jane"> users.select(:name).first # => #<ROM::Struct::User
name="Jane"> 36
PEOPLE WANT THEIR OWN METHODS, OBVIOUSLY 37
class User < ActiveRecord::Base def first_name name.split(' ').first end def
last_name name.split(' ').last end end 38
ROM-RB: CUSTOM STRUCT NAMESPACE 39
class Users < ROM::Relation[:sql] struct_namespace Entities schema(infer: true) end 40
class Users < ROM::Relation[:sql] struct_namespace Entities schema(infer: true) end 41
module Entities class User < ROM::Struct def first_name name.split(' ').first
end def last_name name.split(' ').last end end end 42
module Entities class User < ROM::Struct def first_name name.split(' ').first
end def last_name name.split(' ').last end end end 43
user = users.first => #<Entities::User id=1 name="Jane Doe"> user.first_name #
"Jane" user.last_name # "Doe" 44
user = users.select(:name).first => #<Entities::User name="Jane Doe"> user.first_name # "Jane"
user.last_name # "Doe" 45
WHAT DOES THIS MEAN, REALLY? ! 46
THE TRUTH ABOUT MAGIC 47
EXCITEMENT ABOUT MAGIC (AKA HAPPINESS) 48
ROM-RB DOESN'T ENFORCE MAGIC! 49
AT ANY POINT IN TIME YOU CAN DEFINE STRUCTS WITH
EXPLICIT ATTRIBUTES AND ASK ROM-RB TO LOAD THEM 50
require "entities/address" module Entities class UserProfile < ROM::Struct attribute :email,
Types::Strict::String attribute :name, Types::Strict::String attribute :age, Types::Strict::Integer attribute :address, Address end end 51
users.combine(:address).as(:user_profile).first 52
HOWEVER...THIS REQUIRES TIME, AND GOOD UNDERSTANDING OF THE APPLICATION DOMAIN!
53
IT'S A PROCESS, AND ROM-RB FULLY SUPPORTS IT 54
4.0.0.BETA WAS RELEASED A COUPLE WEEKS AGO ! (JUST SAYING!)
55
THANK YOU ! ! GITHUB.COM/ROM-RB/ROM 56