Ember & Firebase - Speaker Deck

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Ember Firebase Matthew Rudy Jacobs Wednesday 13th November 2013 @ EmberLondon

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Meteor

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Meteor is great

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but it’s all or nothing

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me playing on my phone

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What can we steal?

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Meteor • Pure Javascript • Live page updates • Clean, powerful data synchronisation • Latency compensation • Hot Code Pushes • Sensitive code runs in a privileged environment • Fully self-contained application bundles • Interoperability • Smart Packages

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Clean, powerful data synchronisation

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㟬తᢋ኷ඒ create data here

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㟬తᢋ኷ඒ create data here 㟬తᢋ኷ඒ synchronise it here

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㟬తᢋ኷ඒ create data here 㟬తᢋ኷ඒ synchronise it here 㟬తᢋ኷ඒ here

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㟬తᢋ኷ඒ create data here 㟬తᢋ኷ඒ synchronise it here 㟬తᢋ኷ඒ 㟬తᢋ኷ඒ here and here

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Firebase

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“a hosted JSON object store with built for data synchronisation”

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https://ember-meteor-leaderboard.ﬁrebaseio.com

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https://ember-meteor-leaderboard.ﬁrebaseio.com/players

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https://ember-meteor-leaderboard.ﬁrebaseio.com/players/- J8362Vcevu362WAYmYI

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https://ember-meteor-leaderboard.ﬁrebaseio.com/players/- J8362Vcevu362WAYmYI/name

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uri = “https://example.firebaseio.com/players” ref = new Firebase uri ! keys = []; players = [] ! ref.on ‘child_added’, (snapshot) -> keys.push snapshot.name() players.push snapshot.val()

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Ada ada = ref.child(‘- J8362Vcevu362WAYmYI’)

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Ada ada = ref.child ‘- J8362Vcevu362WAYmYI’ ! ada.set name: “Augusta Ada Byron”

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Ada ada = ref.child ‘- J8362Vcevu362WAYmYI’ ! ada.set name: “Augusta Ada Byron”

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Ada ada = ref.child ‘- J8362Vcevu362WAYmYI’

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Ada ada = ref.child ‘- J8362Vcevu362WAYmYI’ ! ada.update score: 100

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Ada ada = ref.child ‘- J8362Vcevu362WAYmYI’ ! ada.update score: 100

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Albert ref.push name: “Albert Einstein” score: 0

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Albert ref.push name: “Albert Einstein” score: 0

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Albert ref.push name: “Albert Einstein” score: 0

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Albert ref.push name: “Albert Einstein” score: 0 ! # ref.on ‘child_added’, # (snapshot) -> # keys.push snapshot.name() # players.push snapshot.val()

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Albert albert = players[6] ! # Object {_type: "object", name: "Albert Einstein", score: 0}

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Firebase also does more stuff;

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Authentication

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Permissions

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Ranges

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Ordering

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…

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EmberFire

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https://github.com/ﬁrebase/ emberFire

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EmberFire.Object EmberFire.Object = Ember.ObjectProxy.extend init: -> @set ‘content’, {} @ref.on ‘value’, (snapshot) -> @set ‘content’, snapshot.val() , @ ! setUnknownProperty: (key, value) -> @ref.child(key).set(value)

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EmberFire.ObjectArray EmberFire.Ember.ArrayProxy.extend init: -> @set ‘content’, Ember.A([]) @set ‘keys’, Ember.A([]) ! @ref.on “child_added”, (snapshot) -> object = EmberFire.Object.create ref: snapshot.ref() @get(‘content’).pushObject object @get(‘keys’).pushObject snapshot.name() ! @ref.on “child_removed”, (snapshot) -> idx = @get(‘keys’).indexOf(snapshot.name()) @get(‘content’).removeAt idx @get(‘keys’).removeAt idx

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Use it uri = “https://example.firebaseio.com/players” ! playerList = EmberFire.ObjectArray.create ref: new Firebase uri ! playerList.mapProperty(‘name') ! # ["Claude Shannon”, "Nikola Tesla", # "Carl Friedrich Gauss”, ”Marie Curie”, # ”Grace Hopper", "Ada Lovelace"]

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Use it ada = playerList.get ‘lastObject’ ada.incrementProperty ‘score’, 10 ! playerList.pushObject name: “Albert Einstein” score: 0

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Take each Meteor example

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and make it all Ember!

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Meteor Players = new Meteor.Collection “players” ! if Meteor.isClient Template.leaderboard.players = -> Players.find {}, sort: score: -1 name: 1 !

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ember-meteor App.LeaderboardRoute = Ember.Route.extend model: -> @get(‘store’).find('player') ! App.LeaderboardController = Ember.ArrayController.extend playerSorting: ["score:desc", "name:asc"] players: Ember.computed.sort('content', ‘playerSorting') !

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ember-meteor + emberﬁre App.PlayerList = EmberFire.ObjectArray.extend firebaseURI: "https://ember-meteor-leaderboard.firebaseio.com/players" ! init: -> firebase = new Firebase @get(‘firebaseURI’) @set ‘ref', firebase @_super() ! App.LeaderboardRoute = Ember.Route.extend model: -> App.PlayerList.create() ! App.LeaderboardController = Ember.ArrayController.extend players: (-> Ember.ArrayProxy.createWithMixins Ember.SortableMixin, content: @get(‘content') sortProperties: ['score'] sortAscending: false ).property(‘content’) !