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Ember 2.0 in Practice
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tomdale
December 02, 2014
Programming
28
7.3k
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.
tomdale
December 02, 2014
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Transcript
I N P R A C T I C E
E M B E R 2 . 0
W H AT ’ S N E W ?
The thinnest, lightest, most powerful Ember ever.
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
M A N Y F E AT U R E
S AVA I L A B L E T O D AY
S TA B I L I T Y W I
T H O U T S TA G N AT I O N
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.
Stable Beta Canary
O N E TA K E A WAY
– T O M D A L E “Use Ember
CLI today.”
• Many new features will require Ember CLI • Brings
convention over configuration to the ecosystem
None
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)
N E W I D E A S
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
D ATA D O W N , A C T
I O N S U P
I T ’ S A Q U E S T
I O N O F M U TA B I L I T Y
{{user-profile avatar=user.avatarUrl}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar}} {{user-admin-panel avatarUrl=avatar}}
{{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?
{{user-profile avatar=model.avatarUrl}} {{user-avatar src=avatar}} {{user-avatar-editor src=avatar}} {{user-admin-panel avatarUrl=avatar}} All of
them!
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
export default Ember.Component.extend({ actions: { setAvatar: function(value) { this.set('model.avatarUrl', value);
} } });
{{user-profile avatar=user.avatarUrl setAvatar="setAvatar"}}
{{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
<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
<user-profile avatar={{mut user.avatarUrl}}> <user-avatar src={{avatar}}> <user-avatar-editor src={{mut avatar}}> <user-admin-panel avatarUrl={{avatar}}>
Ember 2.0
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
• Components are isolated • Components are reusable • Components
can be reasoned about
{{view 'user-profile'}} Pop Quiz What properties does the user-profile view
access?
{{view 'user-profile'}} Literally anything!
{{user-profile}} Pop Quiz What properties does the user-profile component access?
{{user-profile}} Literally none.
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
var controller = Ember.ObjectController.create(); var wycats = store.find('user', 'wycats'); controller.set('model',
wycats); controller.get('firstName'); // "Yehuda"
None
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
export default Ember.ObjectController.extend({ fullName: function() { return this.get('firstName') + "
" + this.get('lastName'); }.property('firstName', 'lastName') });
export default Ember.Controller.extend({ fullName: function() { return this.get('model.firstName') + "
" + this.get('model.lastName'); }.property('model.firstName', 'model.lastName') });
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') });
U S E E X P L I C I
T W I T H / E A C H
Hello, {{user.firstName}}! {{#with user}} Hello, {{firstName}}. {{/with}}
Hello, {{user.firstName}}! {{#with user as u}} Hello, {{u.firstName}}. {{/with}} Ember
1.x
Hello, {{user.firstName}}! {{#with user as |u|}} Hello, {{u.firstName}}. {{/with}} Ember
2.0
– T O M D A L E “Use Ember
CLI today.”
T H A N K Y O U