Use updated dtext and deferred posts

Gemfile

@@ -32,7 +32,7 @@ gem 'twitter'
 gem 'aws-sdk', '~> 2'
 gem 'responders'
 gem 'highline'
-gem 'dtext_rb', :git => "https://github.com/r888888888/dtext_rb.git", :require => "dtext"
+gem 'dtext_rb', :git => "https://github.com/zwagoth/dtext_rb.git", :require => "dtext"
 gem 'google-api-client'
 gem 'cityhash'
 gem 'bigquery', :git => "https://github.com/abronte/BigQuery.git", :ref => "b92b4e0b54574e3fde7ad910f39a67538ed387ad"

Gemfile.lock

@@ -7,13 +7,6 @@ GIT
       google-api-client (~> 0.9.3)
       googleauth (~> 0.5.0)
 
-GIT
-  remote: https://github.com/r888888888/dtext_rb.git
-  revision: 073b369bf90217ab86fdef3d0f88a96e10343d37
-  specs:
-    dtext_rb (1.9.2)
-      nokogiri (~> 1.8)
-
 GIT
   remote: https://github.com/r888888888/ruby-imagespec.git
   revision: 2dab9811f4abb4fbaeea66feb42e388ba545b2d8
@@ -21,6 +14,13 @@ GIT
   specs:
     ruby-imagespec (0.3.1)
 
+GIT
+  remote: https://github.com/zwagoth/dtext_rb.git
+  revision: 197f3d66d11ebdf4876b6e15817d4f8aa6fca5da
+  specs:
+    dtext_rb (1.10.0)
+      nokogiri (~> 1.8)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -265,9 +265,9 @@ GEM
     net-ssh (4.2.0)
     newrelic_rpm (5.0.0.342)
     nio4r (2.3.1)
-    nokogiri (1.10.1)
+    nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
-    nokogiri (1.10.1-x64-mingw32)
+    nokogiri (1.10.3-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     nokogumbo (1.5.0)
       nokogiri

app/controllers/application_controller.rb

@@ -15,6 +15,9 @@ class ApplicationController < ActionController::Base
   helper_method :show_moderation_notice?
   before_action :enable_cors
 
+  include DeferredPosts
+  helper_method :deferred_post_ids, :deferred_posts
+
   rescue_from Exception, :with => :rescue_exception
   rescue_from User::PrivilegeError, :with => :access_denied
   rescue_from SessionLoader::AuthenticationFailure, :with => :authentication_failed

app/controllers/concerns/deferred_posts.rb

@@ -0,0 +1,14 @@
+module DeferredPosts
+  extend ActiveSupport::Concern
+
+  def deferred_post_ids
+    @post_ids_set ||= Set.new
+  end
+
+  def deferred_posts
+    Post.where(id: deferred_post_ids.to_a).find_each.reduce({}) do |post_hash, p|
+      post_hash[p.id] = p.minimal_attributes
+      post_hash
+    end
+  end
+end

app/helpers/application_helper.rb

@@ -77,7 +77,10 @@ module ApplicationHelper
   end
 
   def format_text(text, **options)
-    raw DTextRagel.parse(text, **options)
+    parsed = DTextRagel.parse(text, **options)
+    return raw "" if parsed.nil?
+    deferred_post_ids.merge(parsed[1])
+    raw parsed[0]
   rescue DTextRagel::Error => e
     raw ""
   end
@@ -244,7 +247,7 @@ module ApplicationHelper
     return "" if user.nil?
     post_id = user.avatar_id
     return "" unless post_id
-    DeferredPosts.add(post_id)
+    deferred_post_ids.add(post_id)
     tag.div class: 'post-thumb placeholder', id: "tp-#{post_id}", 'data-id': post_id do
       tag.img class: 'thumb-img placeholder', src: '/images/thumb-preview.png', height: 100, width: 100
     end

app/logical/deferred_posts.rb

@@ -1,31 +0,0 @@
-class DeferredPosts
-  KEY = :deferred_posts
-
-  def self.add(post_id)
-    raise ArgumentError.new "post id must be a number" if post_id.nil? || !post_id.respond_to?(:to_i)
-    posts = RequestStore[KEY] || []
-    posts << post_id.to_i
-    RequestStore[KEY] = posts
-  end
-
-  def self.remove(post_id)
-    posts = RequestStore[KEY] || []
-    RequestStore[KEY] = posts - [post_id]
-  end
-
-  def self.clear
-    RequestStore[KEY] = []
-  end
-
-  def self.dump
-    post_ids = RequestStore[KEY] || []
-    post_ids.uniq!
-    return {} if post_ids.size == 0
-    post_hash = {}
-    posts = Post.where(id: post_ids)
-    posts.find_each do |p|
-      post_hash[p.id] = p.minimal_attributes
-    end
-    post_hash
-  end
-end

app/views/static/_deferred_posts.html.erb

@@ -1,3 +1,3 @@
 <script>
-  window.___deferred_posts = <%= raw DeferredPosts.dump.to_json %>;
+  window.___deferred_posts = <%= raw deferred_posts.to_json %>;
 </script>