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Firebase Database Rules How To Deal With - Olek...
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GDG Ternopil
January 21, 2017
Programming
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Firebase Database Rules How To Deal With - Oleksandr Pidlisnyi
Firebase Database Rules How To Deal With - Oleksandr Pidlisnyi
GDG Ternopil
January 21, 2017
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Transcript
Firebase Database Rules How To Deal With Oleksandr Pidlisnyi Senior
Software Engineer @ Perfectial LLC GDG Lviv
Firebase Realtime Database
WHAT IF I TELL YOU IT IS NOT DATABASE
None
Database? SQL NoSQL JSON
Realtime
None
Offline
Accessible from Client Devices Android iOS Web SDK for Node.js,
C++, JAVA, Unity
Rules .read .write .validate .indexOn
now root newData data auth $ variables Predefined variables
provider uid token auth
.validate { "rules": { "foo": { ".validate": "newData.isString() && newData.val().length
< 100" } } }
.indexOn – orderByChild { "lambeosaurus": { "height": 2.1, "length": 12.5,
"weight": 5000 }, "stegosaurus": { "height": 4, "length": 9, "weight": 2500 } }
.indexOn – orderByChild { "rules": { "dinosaurs": { ".indexOn": ["height",
"length"] } } }
.indexOn – orderByValue { "scores": { "bruhathkayosaurus": 55, "lambeosaurus": 21,
"linhenykus": 80, "pterodactyl": 93, "stegosaurus": 5, "triceratops": 22 } }
.indexOn – orderByValue { "rules": { "scores": { ".indexOn": ".value"
} } }
.read && .write { "rules": { "foo": { ".read": true,
".write": false } } }
.read && .write { "rules": { "users": { "$uid": {
".write": "$uid === auth.uid" } } } }
Magic { "users": { "John Doe": { "rules": { "blog":
true } }, "John Snow": { "rules": { "blog": false } } }
Magic "blog": { "1": { "title": "Blog Post 1" },
"2": { "title": "Blog Post 2" } } }
Magic "blog": { ".read": true, ".write": "root.child('users').child(auth.uid).child('rules').child('blog').val() === true" }
Magic "$collection": { ".read": true, ".write": "root.child('users').child(auth.uid).child('rules').child($collection).val() === true" }
Magic { "users": { "John Doe": { "rules": { "blog":
{ "read": true, "write": false } } } } }
Magic "$collection": { ".read": "root.child('users').child(auth.uid).child('rules').child($collection).child ('read').val() === true", ".write": "root.child('users').child(auth.uid).child('rules').child($collection).child
('write').val() === true" }
+OleksandrPidlisnyi @opidlisnyi fb.me/opidlisnyi Questions? Thank you!