66 lines
1.8 KiB
Ruby
66 lines
1.8 KiB
Ruby
class Exercise < ActiveRecord::Base
|
|
include Context
|
|
include Creation
|
|
include DefaultValues
|
|
|
|
after_initialize :generate_token
|
|
after_initialize :set_default_values
|
|
|
|
belongs_to :execution_environment
|
|
has_many :submissions
|
|
belongs_to :team
|
|
has_many :users, source_type: ExternalUser, through: :submissions
|
|
|
|
scope :with_submissions, -> { where('id IN (SELECT exercise_id FROM submissions)') }
|
|
|
|
validate :valid_main_file?
|
|
validates :description, presence: true
|
|
validates :execution_environment_id, presence: true
|
|
validates :public, inclusion: {in: [true, false]}
|
|
validates :title, presence: true
|
|
validates :token, presence: true, uniqueness: true
|
|
|
|
def average_percentage
|
|
(average_score / maximum_score * 100).round if average_score
|
|
end
|
|
|
|
def average_score
|
|
if submissions.exists?(cause: 'submit')
|
|
maximum_scores_query = submissions.select('MAX(score) AS maximum_score').where(cause: 'submit').group(:user_id).to_sql.sub('$1', id.to_s)
|
|
self.class.connection.execute("SELECT AVG(maximum_score) AS average_score FROM (#{maximum_scores_query}) AS maximum_scores").first['average_score'].to_f
|
|
end
|
|
end
|
|
|
|
def duplicate(attributes = {})
|
|
exercise = dup
|
|
exercise.attributes = attributes
|
|
files.each { |file| exercise.files << file.dup }
|
|
exercise
|
|
end
|
|
|
|
def generate_token
|
|
self.token ||= SecureRandom.hex(4)
|
|
end
|
|
private :generate_token
|
|
|
|
def maximum_score
|
|
files.teacher_defined_tests.sum(:weight)
|
|
end
|
|
|
|
def set_default_values
|
|
set_default_values_if_present(public: false)
|
|
end
|
|
private :set_default_values
|
|
|
|
def to_s
|
|
title
|
|
end
|
|
|
|
def valid_main_file?
|
|
if files.main_files.count > 1
|
|
errors.add(:files, I18n.t('activerecord.errors.models.exercise.at_most_one_main_file'))
|
|
end
|
|
end
|
|
private :valid_main_file?
|
|
end
|