json.user_certification @user_certification  #用户的认证，1为认证通过，0为未认证/认证未通过
json.exercises_count @public_exercises_count
if @public_exercises_count > 0
  json.public_exercises do
    json.array! @public_exercises do |exercise|
      json.exercise_name exercise.name
      json.exercise_description exercise.description
      json.exercise_id exercise.container_id
      json.exercise_user_id exercise.user_id
      json.exercise_user_name exercise.user.real_name
    end
  end
else
  json.public_exercises []
end