implementation of import wip

app/models/code_harbor_link.rb

@@ -1,13 +0,0 @@
-class CodeHarborLink < ApplicationRecord
-  validates :oauth2token, presence: true
-  validates :user_id, presence: true
-
-  belongs_to :internal_user, foreign_key: :user_id
-  alias_method :user, :internal_user
-  alias_method :user=, :internal_user=
-
-  def to_s
-    oauth2token
-  end
-
-end

app/models/codeharbor_link.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class CodeharborLink < ApplicationRecord
+  validates :oauth2token, presence: true
+  validates :user_id, presence: true
+
+  belongs_to :user, foreign_key: :user_id, class_name: 'InternalUser'
+
+  def to_s
+    oauth2token
+  end
+end

app/models/exercise.rb

@@ -31,7 +31,7 @@ class Exercise < ApplicationRecord
 
   validate :valid_main_file?
   validates :description, presence: true
-  validates :execution_environment_id, presence: true
+  # validates :execution_environment_id, presence: true # TODO make this conditional - but based on what?
   validates :public, boolean_presence: true
   validates :title, presence: true
   validates :token, presence: true, uniqueness: true
@@ -49,7 +49,7 @@ class Exercise < ApplicationRecord
       0
     end
   end
-  
+
   def finishers_percentage
     if users.distinct.count != 0
       (100.0 / users.distinct.count * finishers.count).round(2)