0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 3 years have passed since last update.

【Rails】配列をキーでsortしたい

Posted at

配列をpriceの昇順でsortしたいとき

array = [
 {'id'=> 1, 'price'=> 300}, 
 {'id'=> 2, 'price'=> 100}
]

なんとなくキーを指定したらsortできたようなーと思ったけどできなかった。

array.sort(:price)
#=>ArgumentError (wrong number of arguments (given 1, expected 0))

sort_byでブロックの中でキーを指定する。

array.sort_by { |a| a['price'] }
#=> [{"id"=>2, "price"=>100}, {"id"=>1, "price"=>300}]

##参考

0
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
0
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?