Ember 2.0 in Practice

A brief tour of some of the new ideas in Ember 2.0, and how you can start adopting them today.

1. I N P R A C T I C E E M B E R 2 . 0
2. W H AT ’ S N E W ?
3. The thinnest, lightest, most powerful Ember ever.
4. S I M P L I F I E D R E F I N E D M O R E P O W E R F U L
5. M A N Y F E AT U R E S AVA I L A B L E T O D AY
6. S TA B I L I T Y W I T H O U T S TA G N AT I O N
7. 1.8 2.0 1.9 1.10 1.11 1.12 … All new features developed on master. No big-bang rewrite. Perhaps counterintuitively, 2.0 doesn't add new features; it simply removes long-deprecated ones.
8. Stable Beta Canary
9. O N E TA K E A WAY
10. – T O M D A L E “Use Ember CLI today.”
11. • Many new features will require Ember CLI • Brings convention over configuration to the ecosystem
13. N O T J U S T J AVA S C R I P T • Enhance builds (ESNext, linters, CSS preprocessors) • Add deployment targets (Parse, Firebase, Divshot) • CSS (Bootstrap, Foundation, Pure)
14. N E W I D E A S
15. S TA R T A D O P T I N G T O D AY N O T O N LY W I L L Y O U R A P P B E F U T U R E - P R O O F, I T W I L L B E B E T T E R A R C H I T E C T E D
16. D ATA D O W N , A C T I O N S U P
17. I T ’ S A Q U E S T I O N O F M U TA B I L I T Y
18. {{user-profile avatar=user.avatarUrl}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar}} {{user-admin-panel avatarUrl=avatar}}
19. {{user-profile avatar=user.avatarUrl}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar}} {{user-admin-panel avatarUrl=avatar}} Pop Quiz Which of these subcomponents can modify user.avatarUrl?
20. {{user-profile avatar=model.avatarUrl}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar}} {{user-admin-panel avatarUrl=avatar}} All of them!
21. I N S T E A D O F R E LY I N G O N 2 - WAY D ATA B I N D I N G , E M I T A C T I O N S
22. export default Ember.Component.extend({ actions: { setAvatar: function(value) { this.set('model.avatarUrl', value); } } });
23. {{user-profile avatar=user.avatarUrl setAvatar="setAvatar"}}
24. {{user-profile avatar=user.avatarUrl setAvatar="setAvatar"}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar setAvatar="setAvatar"}} {{user-admin-panel avatarUrl=avatar}} Ember 1.x
25. <user-profile avatar={{user.avatarUrl}} setAvatar={{action "setAvatar"}}> <user-avatar src={{avatar}}> <user-avatar-editor src={{avatar}} setAvatar={{action "setAvatar"}}> <user-admin-panel avatarUrl={{avatar}}> Ember 2.0
26. <user-profile avatar={{mut user.avatarUrl}}> <user-avatar src={{avatar}}> <user-avatar-editor src={{mut avatar}}> <user-admin-panel avatarUrl={{avatar}}> Ember 2.0
27. T H E R E I S N O V I E W. T H E R E I S O N LY C O M P O N E N T
28. • Components are isolated • Components are reusable • Components can be reasoned about
29. {{view 'user-profile'}} Pop Quiz What properties does the user-profile view access?
30. {{view 'user-profile'}} Literally anything!
31. {{user-profile}} Pop Quiz What properties does the user-profile component access?
32. {{user-profile}} Literally none.
33. N O M O R E O B J E C T C O N T R O L L E R O R A R R AY C O N T R O L L E R
34. var controller = Ember.ObjectController.create(); var wycats = store.find('user', 'wycats'); controller.set('model', wycats); controller.get('firstName'); // "Yehuda"
36. P R O X Y I N G C O N F U S E S T H E H E L L O U T O F P E O P L E
37. export default Ember.ObjectController.extend({ fullName: function() { return this.get('firstName') + " " + this.get('lastName'); }.property('firstName', 'lastName') });
38. export default Ember.Controller.extend({ fullName: function() { return this.get('model.firstName') + " " + this.get('model.lastName'); }.property('model.firstName', 'model.lastName') });
39. export default Ember.Controller.extend({ firstName: alias('model.firstName'), lastName: alias('model.lastName'), fullName: function() { return this.get('firstName') + " " + this.get('lastName'); }.property('firstName', 'lastName') });
40. U S E E X P L I C I T W I T H / E A C H
41. Hello, {{user.firstName}}! {{#with user}} Hello, {{firstName}}. {{/with}}
42. Hello, {{user.firstName}}! {{#with user as u}} Hello, {{u.firstName}}. {{/with}} Ember 1.x
43. Hello, {{user.firstName}}! {{#with user as |u|}} Hello, {{u.firstName}}. {{/with}} Ember 2.0
44. – T O M D A L E “Use Ember CLI today.”
45. T H A N K Y O U