Slide 19
Slide 19 text
3JMTͱ%KBOHPͷൺֱɿσʔλϕʔεݺͼग़͠
Ruby on Rails Django
全件取得 Author.all Author.objects.all()
ID指定ロード Author.find(123) Author.objects.get(id=123)
where Author.where(name: ‘hoge’)
Author.where(“age >= ?”, 20)
Author.where(age: 20..30)
Author.where(age: nil)
Author.objects.filter(name=‘hoge’)
Author.objects.filter(age__gte=20)
Author.objects.filter(age__range=(20, 30))
Author.objects.filter(age__isnull=True)
関連呼び出し author.published_books author.publishedbook_set.all()
- name: string
- age: int, null: true
authors
- author_id: int
- title: string
published_books