Lab3/student_collection.rb - Lab5 - Evorunner/ruby_labs

Lab3/student_collection.rb
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Иван
lab-03: ООП, классы Student и StudentCollection
31 май 2026, 17:08
31 май 2026, 17:084ab2cb6
require_relative "student"

class StudentCollection
  VALID_SKILL_LEVELS = Student::VALID_SKILL_LEVELS

  def initialize
    @students = []
  end

  def add(student)
    @students << student
  end

  # Запрашивает данные с консоли, валидирует каждое поле повторно
  def create_from_input(index)
    puts "\n--- Студент #{index} ---"

    name   = prompt_until_valid("Имя: ")                { |v| !v.strip.empty? }
    age    = prompt_until_valid("Возраст: ", :integer)  { |v| v > 0 }
    gender = prompt_until_valid("Пол (male/female): ")  { |v| Student::VALID_GENDERS.include?(v.downcase) }
    group  = prompt_until_valid("Группа: ")             { |v| !v.strip.empty? }
    email  = prompt_until_valid("Email: ")              { |v| v.match?(Student::EMAIL_REGEX) }

    skills = {}
    skills_count = prompt_until_valid("Сколько навыков? ", :integer) { |v| v > 0 }
    skills_count.times do
      skill_name  = prompt_until_valid("  Название навыка: ") { |v| !v.strip.empty? }.to_sym
      skill_level = prompt_until_valid(
        "  Уровень (#{VALID_SKILL_LEVELS.join('/')}): "
      ) { |v| VALID_SKILL_LEVELS.include?(v.downcase) }
      skills[skill_name] = skill_level
    end

    Student.new(name: name, age: age, gender: gender.downcase,
                group: group, email: email, skills: skills)
  end

  def print_all
    puts "\nСписок студентов"
    grouped = @students.group_by(&:group)
    grouped.each do |group, members|
      puts "\n[#{group}]"
      members.each_with_index do |student, idx|
        puts "#{idx + 1}. #{student}"
      end
    end
  end

  private

  def prompt_until_valid(prompt, type = :string, &block)
    loop do
      print prompt
      raw = gets.chomp.strip
      value = type == :integer ? (Integer(raw) rescue nil) : raw
      if value && block.call(value)
        return value
      else
        puts "Ошибка: введите корректное значение!"
      end
    end
  end
end