35 lines
986 B
Ruby
35 lines
986 B
Ruby
# frozen_string_literal: true
|
|
|
|
class ExerciseCollection < ApplicationRecord
|
|
include TimeHelper
|
|
|
|
has_many :exercise_collection_items, dependent: :delete_all
|
|
alias items exercise_collection_items
|
|
has_many :exercises, through: :exercise_collection_items, inverse_of: :exercise_collections
|
|
belongs_to :user, polymorphic: true
|
|
|
|
def collection_statistics
|
|
statistics = {}
|
|
exercise_collection_items.each do |item|
|
|
statistics[item.position] =
|
|
{exercise_id: item.exercise.id, exercise_title: item.exercise.title,
|
|
working_time: time_to_f(item.exercise.average_working_time)}
|
|
end
|
|
statistics
|
|
end
|
|
|
|
def average_working_time
|
|
if exercises.empty?
|
|
0
|
|
else
|
|
values = collection_statistics.values.reject {|o| o[:working_time].nil? }
|
|
sum = values.reduce(0) {|sum, item| sum + item[:working_time] }
|
|
sum / values.size
|
|
end
|
|
end
|
|
|
|
def to_s
|
|
"#{I18n.t('activerecord.models.exercise_collection.one')}: #{name} (#{id})"
|
|
end
|
|
end
|