1
user.rb組功能軌
enum gender: [:Male, :Female]
belongs_to :qualification
qualification.rb
has_many :users
當我查詢
User.all.group(:gender).count.map { |k, v| [User.genders.key(k), v] }.to_h
它給了我
{"Male"=>18, "Female"=>1}
但是我不知道做同樣的資格,因爲協會涉及它。我該怎麼做?
User.all.group(:qualification_id).count.map { ??? }
謝謝工程:) –