Adapt 'show' view for open questions without options

- Prevent creating options for open questions
- Skip rendering the options table when none exist

app/models/abilities/administrator.rb

@@ -101,7 +101,7 @@ module Abilities
       end
       can [:read, :order_options], Poll::Question::Option
       can [:create, :update, :destroy], Poll::Question::Option do |option|
-        can?(:update, option.question)
+        can?(:update, option.question) && option.question.accepts_options?
       end
       can :read, Poll::Question::Option::Video
       can [:create, :update, :destroy], Poll::Question::Option::Video do |video|

app/models/poll/question.rb

@@ -61,6 +61,10 @@ class Poll::Question < ApplicationRecord
     votation_type.nil? || votation_type.unique?
   end
 
+  def accepts_options?
+    votation_type.nil? || votation_type.accepts_options?
+  end
+
   def max_votes
     if multiple?
       votation_type.max_votes

app/models/votation_type.rb

@@ -9,6 +9,10 @@ class VotationType < ApplicationRecord
   validates :questionable_type, inclusion: { in: ->(*) { QUESTIONABLE_TYPES }}
   validates :max_votes, presence: true, if: :max_votes_required?
 
+  def accepts_options?
+    !open?
+  end
+
   private
 
     def max_votes_required?