Sails.js Model / ORM introduce

1. Sails.js Model / ORM introduce

2. http://sailsjs.org/

3. sails 0.10 beta
• sails-0.10.0-reference
• .done() vs. .exec()
• Model Associations
• sails console
• promises in core

4. sails upgrade 0.10 beta
• npm i sails@beta -g
• npm i sails@beta -save
• npm i sails-mysql@beta -save
• npm i sails-mongo@beta -save

5. • config/connections.js • addconfig/models.js
DB Setting

7. Why you need ORM ?

8. How Create Table?
traditional way

9. SHOW CREATE TABLE `post`;
!
ALTER TABLE `post` ADD `title`VARCHAR(100) NULL DEFAULT NULL AFTER `id`;
!
ALTER TABLE `post` ADD `content` TEXT DEFAULT NULL AFTER `title`;
MySQL

10. MySQL

11. SELECT * FROM `post` WHERE `id` = '1' LIMIT 1;
MySQL

12. MySQL

13. Terrible happened
• DB schema modify
• Multi tables join
• Migrate Table or Database
• Change adapter
• more ...

14. Can we controller
Model from Code???

15. ORM
Objective Orient Model

16. Object Orented

17. adpters

18. one of best practices

19. Sql & Nosql

20. SQL vs. MongoDB

21. Waterline
Sails.js ORM module

22. Model
• file path -> api/models
• Capital naming
• Set schema and rule.
• ORM like
• you can use multi-adapter

23. Model Associations
• sails 0.10 new Feature
• Many-to-Many
• One-to-Many
• One-to-One

24. Disk database (default)

25. Adapter support
• MySQL
• MongoDB
• Redis
• ...
• http://sailsjs.org/#!documentation/models

26. Adapter config

27. • config/connections.js • addconfig/models.js
DB Setting

28. Attribute type
• string
• text
• integer
• float
• date
• time
• datetime
• boolean
• binary
• array
• json

29. Custom Defined
Instance Methods

30. example, api/models/Post.js

31. example, api/models/Post.js
generate a table and column

32. Auto migration

33. example2, api/models/Post.js
insert a attribute in Post model

34. Before and After

35. Lifecycle Callbacks
sails model

37. define Model
Associations

38. One to One

39. One to Many

40. Controller and Model

41. example, controller call Post model

42. example, controller call Post model
model name

43. example, controller call Post model
model
behavior

44. example, controller call Post model
new data

45. example, controller call Post model
success
callback
&
response

46. Model document
http://sailsjs.org/#!documentation/models

47. • User.create({name:"smlsun"}).exec(console.log);
• Post.create({title:"post", content:"body", user:
1}).exec(console.log);
• Post.create({title:"post another", content:"body", user:
1}).exec(console.log);
• Post.find().exec(console.log);
• Post.find().populate("user").exec(console.log);
• User.find().populate("posts").exec(console.log);
• Profile.create({email: "smlsun@gmail.com", user:
1}).exec(console.log)
• Profile.find().populate("user").exec(console.log);