compact_blank

compact_blankを使うと配列やハッシュからblankな値を取り除くことができる

code:ruby

array = [nil, "", "hello", [], {}, " ", false, true, 42]

result = array.compact_blank

code:ruby

hash = { a: nil, b: "", c: "ruby", d: [], e: {}, f: false, g: true }

result = hash.compact_blank

# > {:c=>"ruby", :g=>true}

Railsの内部実装

code:ruby

def compact_blank

reject(&:blank?)

end

instance method Enumerable#reject