Fix most rubocop issues (#2165)

* Run rubocop --autocorrect on app/, config/ and lib/, also manually fix some remaining style issues

* Run rubocop --autocorrect-all on db/

* Run rubocop --autocorrect-all on `spec/` and fix remaining issues

lib/sanitize_ext/sanitize_config.rb

@@ -48,9 +48,9 @@ class Sanitize
         node.content = "[🖼  #{node['alt']}]"
       else
         url = node['href']
-        prefix = url.match(/\Ahttps?:\/\/(www\.)?/).to_s
+        prefix = url.match(%r{\Ahttps?://(www\.)?}).to_s
         text   = url[prefix.length, 30]
-        text   = text + "…" if url[prefix.length..-1].length > 30
+        text += '…' if url.length - prefix.length > 30
         node.content = "[🖼  #{text}]"
       end
     end
@@ -88,7 +88,7 @@ class Sanitize
       },
 
       protocols: {
-        'a'          => { 'href' => LINK_PROTOCOLS },
+        'a' => { 'href' => LINK_PROTOCOLS },
         'blockquote' => { 'cite' => LINK_PROTOCOLS },
       },
 
@@ -126,7 +126,7 @@ class Sanitize
 
       node = env[:node]
 
-      rel = (node['rel'] || '').split(' ') & ['tag']
+      rel = (node['rel'] || '').split & ['tag']
       rel += ['nofollow', 'noopener', 'noreferrer'] unless TagManager.instance.local_url?(node['href'])
 
       if rel.empty?

lib/tasks/assets.rake

@@ -3,14 +3,14 @@
 namespace :assets do
   desc 'Generate static pages'
   task generate_static_pages: :environment do
-    class StaticApplicationController < ApplicationController
-      def current_user
-        nil
-      end
-    end
-
     def render_static_page(action, dest:, **opts)
-      html = StaticApplicationController.render(action, opts)
+      renderer = Class.new(ApplicationController) do
+        def current_user
+          nil
+        end
+      end
+
+      html = renderer.render(action, opts)
       File.write(dest, html)
     end
 

lib/tasks/glitchsoc.rake

@@ -1,8 +1,12 @@
+# frozen_string_literal: true
+
 namespace :glitchsoc do
   desc 'Backfill local-only flag on statuses table'
   task backfill_local_only: :environment do
-    Status.local.where(local_only: nil).find_each do |st|
-      ActiveRecord::Base.logger.silence { st.update_attribute(:local_only, st.marked_local_only?) }
+    Status.local.where(local_only: nil).find_each do |status|
+      ActiveRecord::Base.logger.silence do
+        status.update_attribute(:local_only, status.marked_local_only?) # rubocop:disable Rails/SkipsModelValidations
+      end
     end
   end
 end