FEATURE: add site setting leader_links_no_follow to control whether users with trust level 3 or higher have nofollow on their links

app/models/post.rb

@@ -140,7 +140,7 @@ class Post < ActiveRecord::Base
     return raw if cook_method == Post.cook_methods[:raw_html]
 
     # Default is to cook posts
-    cooked = if !self.user || !self.user.has_trust_level?(:leader)
+    cooked = if !self.user || SiteSetting.leader_links_no_follow || !self.user.has_trust_level?(:leader)
       post_analyzer.cook(*args)
     else
       # At trust level 3, we don't apply nofollow to links

app/models/user_profile.rb

@@ -48,7 +48,7 @@ class UserProfile < ActiveRecord::Base
 
   def cook
     if self.bio_raw.present?
-      self.bio_cooked = PrettyText.cook(self.bio_raw, omit_nofollow: user.has_trust_level?(:leader)) if bio_raw_changed?
+      self.bio_cooked = PrettyText.cook(self.bio_raw, omit_nofollow: user.has_trust_level?(:leader) && !SiteSetting.leader_links_no_follow) if bio_raw_changed?
     else
       self.bio_cooked = nil
     end

config/locales/server.en.yml

@@ -841,6 +841,7 @@ en:
     leader_requires_posts_read_all_time: "The minimum total number of posts a user must have read to qualify for leader (3) trust level."
     leader_requires_max_flagged: "User must not have had more than x posts flagged by x different users in the last 100 days to qualify for promotion to leader (3) trust level, where x is this setting's value. (0 or higher)"
     leader_promotion_min_duration: "The minimum number of days that a promotion to leader lasts before a user can be demoted."
+    leader_links_no_follow: "Whether links from leaders have the nofollow attribute."
 
     min_trust_to_create_topic: "The minimum trust level required to create a new topic."
 

config/site_settings.yml

@@ -491,6 +491,7 @@ trust:
   leader_promotion_min_duration:
     default: 14
     min: 0
+  leader_links_no_follow: false
 
 security:
   use_https: false

spec/models/post_spec.rb

@@ -763,11 +763,19 @@ describe Post do
       post.cooked.should =~ /nofollow/
     end
 
-    it "should not add nofollow for trust level 3 and higher" do
+    it "when leader_links_no_follow is false, should not add nofollow for trust level 3 and higher" do
+      SiteSetting.stubs(:leader_links_no_follow).returns(false)
       post.user.trust_level = 3
       post.save
       (post.cooked =~ /nofollow/).should be_false
     end
+
+    it "when leader_links_no_follow is true, should add nofollow for trust level 3 and higher" do
+      SiteSetting.stubs(:leader_links_no_follow).returns(true)
+      post.user.trust_level = 3
+      post.save
+      (post.cooked =~ /nofollow/).should be_true
+    end
   end
 
   describe "calculate_avg_time" do

spec/models/user_profile_spec.rb

@@ -84,6 +84,9 @@ describe UserProfile do
         expect(user_profile.bio_processed).to eq("<p>im sissy and i love http://ponycorns.com</p>")
       end
 
+      context 'leader_links_no_follow is false' do
+        before { SiteSetting.stubs(:leader_links_no_follow).returns(false) }
+
         it 'includes the link without nofollow if the user is trust level 3 or higher' do
           user.trust_level = TrustLevel.levels[:leader]
           user_profile.send(:cook)
@@ -105,5 +108,17 @@ describe UserProfile do
           expect(created_user.user_profile.bio_processed).to eq("<p>im sissy and i love <a href=\"http://ponycorns.com\" rel=\"nofollow\">http://ponycorns.com</a></p>")
         end
       end
+
+      context 'leader_links_no_follow is true' do
+        before { SiteSetting.stubs(:leader_links_no_follow).returns(true) }
+
+        it 'includes the link with nofollow if the user is trust level 3 or higher' do
+          user.trust_level = TrustLevel.levels[:leader]
+          user_profile.send(:cook)
+          expect(user_profile.bio_excerpt).to eq("im sissy and i love <a href='http://ponycorns.com' rel='nofollow'>http://ponycorns.com</a>")
+          expect(user_profile.bio_processed).to eq("<p>im sissy and i love <a href=\"http://ponycorns.com\" rel=\"nofollow\">http://ponycorns.com</a></p>")
+        end
+      end
+    end
   end
 end