15. Origin of Sql
SQL
From Wikipedia, the free encyclopedia
SQL (...), is a database computer language
designed for managing data in relational
database management systems (RDBMS)
16. Origin of Sql
SQL
From Wikipedia, the free encyclopedia
SQL (...), is a database computer language
designed for managing data in relational
database management systems (RDBMS)
24. Persistence
class User
include MongoMapper::Document
end
user = User.create({
:username => "giordano",
:password => "123"
})
user.save
25. Persistence
class User
include MongoMapper::Document
end
user = User.create({
:username => "giordano",
:password => "123"
})
user.save
puts User.all.last.to_mongo
35. Embedded Documents
class Task
include MongoMapper::EmbeddedDocument
key :description, String
key :pomodori, Integer
key :is_done, Boolean
end
36. Embedded Documents
class User
include MongoMapper::Document
key :username, String
key :password , String
key :email, DowncasedString
many :tasks
end
44. Validations & Callbacks
class User
include MongoMapper::Document
key :username, String,
validates_presence_of :username
key :password, String
validates_presence_of :password
end
45. Validations & Callbacks
class User
include MongoMapper::Document
key :username, String, :required => true
key :password, String, :required => true
end