Files
codeocean/app/models/tag.rb
Thomas Hille 0db11884bc Extended Exercises by worktime, difficulty and tags, added ProxyExercises as prework for recommendations
Tags can be added to exercises in the edit view. Tags can monitored under /tags.
Added the concept of ProxyExercises which are a collection of Exercises. They can be found under /proxy_exercises
Added Interventions as prework to show interventions later to the user.
Added exercise/[:id]/working_time to return the working time of the user in this exercise and the average working time of all users in this exercise
2017-03-21 10:31:32 +01:00

22 lines
288 B
Ruby

class Tag < ActiveRecord::Base
has_many :exercise_tags
has_many :exercises, through: :exercise_tags
validates_uniqueness_of :name
def destroy
if (can_be_destroyed?)
super
end
end
def can_be_destroyed?
!exercises.any?
end
def to_s
name
end
end