Firebase Database Rules How To Deal With - Oleksandr Pidlisnyi

Firebase Database Rules How To Deal With - Oleksandr Pidlisnyi

Transcript

1. Firebase Database Rules How To Deal With Oleksandr Pidlisnyi Senior Software Engineer @ Perfectial LLC GDG Lviv
2. Firebase Realtime Database
3. WHAT IF I TELL YOU IT IS NOT DATABASE
5. Database? SQL NoSQL JSON
6. Realtime
8. Offline
9. Accessible from Client Devices Android iOS Web SDK for Node.js, C++, JAVA, Unity
10. Rules .read .write .validate .indexOn
11. now root newData data auth $ variables Predefined variables
12. provider uid token auth
13. .validate { "rules": { "foo": { ".validate": "newData.isString() && newData.val().length < 100" } } }
14. .indexOn – orderByChild { "lambeosaurus": { "height": 2.1, "length": 12.5, "weight": 5000 }, "stegosaurus": { "height": 4, "length": 9, "weight": 2500 } }
15. .indexOn – orderByChild { "rules": { "dinosaurs": { ".indexOn": ["height", "length"] } } }
16. .indexOn – orderByValue { "scores": { "bruhathkayosaurus": 55, "lambeosaurus": 21, "linhenykus": 80, "pterodactyl": 93, "stegosaurus": 5, "triceratops": 22 } }
17. .indexOn – orderByValue { "rules": { "scores": { ".indexOn": ".value" } } }
18. .read && .write { "rules": { "foo": { ".read": true, ".write": false } } }
19. .read && .write { "rules": { "users": { "$uid": { ".write": "$uid === auth.uid" } } } }
20. Magic { "users": { "John Doe": { "rules": { "blog": true } }, "John Snow": { "rules": { "blog": false } } }
21. Magic "blog": { "1": { "title": "Blog Post 1" }, "2": { "title": "Blog Post 2" } } }
22. Magic "blog": { ".read": true, ".write": "root.child('users').child(auth.uid).child('rules').child('blog').val() === true" }
23. Magic "$collection": { ".read": true, ".write": "root.child('users').child(auth.uid).child('rules').child($collection).val() === true" }
24. Magic { "users": { "John Doe": { "rules": { "blog": { "read": true, "write": false } } } } }
25. 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" }
26. +OleksandrPidlisnyi @opidlisnyi fb.me/opidlisnyi Questions? Thank you!