diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 26a4a0b59..7c010de1d 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -217,21 +217,8 @@ module ApplicationHelper
     tag.div(text, class: "prose", **options)
   end
 
-  def dtext_field(object, name, options = {})
-    options[:name] ||= name.capitalize
-    options[:input_id] ||= "#{object}_#{name}"
-    options[:input_name] ||= "#{object}[#{name}]"
-    options[:value] ||= instance_variable_get("@#{object}").try(name)
-    options[:preview_id] ||= "dtext-preview"
-    options[:classes] ||= ""
-    options[:hint] ||= ""
-    options[:type] ||= "text"
-
-    render "dtext/form", options
-  end
-
-  def dtext_preview_button(object, name, input_id: "#{object}_#{name}", preview_id: "dtext-preview")
-    tag.input value: "Preview", type: "button", class: "dtext-preview-button", "data-input-id": input_id, "data-preview-id": preview_id
+  def dtext_preview_button(preview_field)
+    tag.input value: "Preview", type: "button", class: "dtext-preview-button", "data-preview-field": preview_field
   end
 
   def quick_search_form_for(attribute, url, name, autocomplete: nil, redirect: false, &block)
diff --git a/app/javascript/src/javascripts/autocomplete.js.erb b/app/javascript/src/javascripts/autocomplete.js.erb
index 49e9abee4..afe3a854a 100644
--- a/app/javascript/src/javascripts/autocomplete.js.erb
+++ b/app/javascript/src/javascripts/autocomplete.js.erb
@@ -38,7 +38,7 @@ Autocomplete.initialize_all = function() {
     });
 
     this.initialize_tag_autocomplete();
-    this.initialize_mention_autocomplete($(".autocomplete-mentions textarea"));
+    this.initialize_mention_autocomplete($("form div.input.dtext textarea"));
     this.initialize_fields($('[data-autocomplete="tag"]'), Autocomplete.tag_source);
     this.initialize_fields($('[data-autocomplete="artist"]'), Autocomplete.artist_source);
     this.initialize_fields($('[data-autocomplete="pool"]'), Autocomplete.pool_source);
diff --git a/app/javascript/src/javascripts/dtext.js b/app/javascript/src/javascripts/dtext.js
index 94d708f79..8b9edbb60 100644
--- a/app/javascript/src/javascripts/dtext.js
+++ b/app/javascript/src/javascripts/dtext.js
@@ -39,8 +39,11 @@ Dtext.call_edit = function(e, $button, $input, $preview) {
 
 Dtext.click_button = function(e) {
   var $button = $(e.target);
-  var $input = $("#" + $button.data("input-id"));
-  var $preview = $("#" + $button.data("preview-id"));
+  var $form = $button.parents("form");
+  var fieldName = $button.data("preview-field");
+  var $inputContainer = $form.find(`div.input.${fieldName} .dtext-previewable`);
+  var $input = $inputContainer.find("> input, > textarea");
+  var $preview = $inputContainer.find("div.dtext-preview");
 
   if ($button.val().match(/preview/i)) {
     Dtext.call_preview(e, $button, $input, $preview);
diff --git a/app/javascript/src/styles/common/simple_form.scss b/app/javascript/src/styles/common/simple_form.scss
index 9d39c3a05..2b1706df4 100644
--- a/app/javascript/src/styles/common/simple_form.scss
+++ b/app/javascript/src/styles/common/simple_form.scss
@@ -39,7 +39,7 @@ form.simple_form {
       padding-left: 1em;
     }
 
-    &.text {
+    &.text, &.dtext {
       .hint {
         padding-left: 0;
         display: block;
diff --git a/app/logical/dtext_input.rb b/app/logical/dtext_input.rb
new file mode 100644
index 000000000..a1910e933
--- /dev/null
+++ b/app/logical/dtext_input.rb
@@ -0,0 +1,30 @@
+# A custom SimpleForm input for DText fields.
+#
+# Usage:
+#
+#   <%= f.input :body, as: :dtext %>
+#   <%= f.input :reason, as: :dtext, inline: true %>
+#
+# https://github.com/heartcombo/simple_form/wiki/Custom-inputs-examples
+# https://github.com/heartcombo/simple_form/blob/master/lib/simple_form/inputs/string_input.rb
+# https://github.com/heartcombo/simple_form/blob/master/lib/simple_form/inputs/text_input.rb
+
+class DtextInput < SimpleForm::Inputs::Base
+  enable :placeholder, :maxlength, :minlength
+
+  def input(wrapper_options)
+    t = template
+    merged_input_options = merge_wrapper_options(input_html_options, wrapper_options)
+
+    t.tag.div(class: "dtext-previewable") do
+      if options[:inline]
+        t.concat @builder.text_field(attribute_name, merged_input_options)
+      else
+        t.concat @builder.text_area(attribute_name, { rows: 20, cols: 30 }.merge(merged_input_options))
+      end
+
+      t.concat t.tag.div(id: "dtext-preview", class: "dtext-preview prose")
+      t.concat t.tag.span(t.link_to("Formatting help", t.dtext_help_path, remote: true, method: :get), class: "hint dtext-hint")
+    end
+  end
+end
diff --git a/app/views/bulk_update_requests/_form.html.erb b/app/views/bulk_update_requests/_form.html.erb
index 8d48d16ea..acf886b59 100644
--- a/app/views/bulk_update_requests/_form.html.erb
+++ b/app/views/bulk_update_requests/_form.html.erb
@@ -24,7 +24,7 @@
 
   <% if @bulk_update_request.new_record? %>
     <div class="input">
-      <%= dtext_field "bulk_update_request", "reason", :name => "Reason" %>
+      <%= f.input :reason, as: :dtext %>
     </div>
   <% end %>
 
@@ -44,5 +44,5 @@
   <% end %>
 
   <%= f.submit value: "Submit" %>
-  <%= dtext_preview_button "bulk_update_request", "reason" %>
+  <%= dtext_preview_button "bulk_update_request_reason" %>
 <% end %>
diff --git a/app/views/comments/_form.html.erb b/app/views/comments/_form.html.erb
index fbf255f5e..72f6185a6 100644
--- a/app/views/comments/_form.html.erb
+++ b/app/views/comments/_form.html.erb
@@ -4,9 +4,9 @@
   <% if comment.new_record? %>
     <%= f.hidden_field :post_id %>
   <% end %>
-  <%= dtext_field "comment", "body", classes: "autocomplete-mentions", value: comment.body, input_id: "comment_body_for_#{comment.id}", preview_id: "dtext-preview-for-#{comment.id}", hint: link_to_wiki("Comment rules", "howto:comment").html_safe %>
+  <%= f.input :body, as: :dtext %>
   <%= f.button :submit, "Submit" %>
-  <%= dtext_preview_button "comment", "body", :input_id => "comment_body_for_#{comment.id}", :preview_id => "dtext-preview-for-#{comment.id}" %>
+  <%= dtext_preview_button "comment_body" %>
   <% if comment.new_record? %>
     <%= f.input :do_not_bump_post, :label => "No bump" %>
   <% end %>
diff --git a/app/views/dmails/_form.html.erb b/app/views/dmails/_form.html.erb
index f3efb498c..2a5b2925d 100644
--- a/app/views/dmails/_form.html.erb
+++ b/app/views/dmails/_form.html.erb
@@ -1,7 +1,7 @@
 <%= edit_form_for(dmail) do |f| %>
   <%= f.input :to_name, :label => "To", :input_html => { value: dmail.to.try(:name), data: { autocomplete: "user" } } %>
   <%= f.input :title, :as => :string %>
-  <%= dtext_field "dmail", "body" %>
+  <%= f.input :body, as: :dtext %>
   <%= f.button :submit, "Send", :data => { :disable_with => "Sending..." } %>
-  <%= dtext_preview_button "dmail", "body" %>
+  <%= dtext_preview_button "dmail_body" %>
 <% end %>
diff --git a/app/views/dtext/_form.html.erb b/app/views/dtext/_form.html.erb
deleted file mode 100644
index ef79e084e..000000000
--- a/app/views/dtext/_form.html.erb
+++ /dev/null
@@ -1,19 +0,0 @@
-<%# name, input_id, input_name, preview_id, value, type %>
-<div class="input text optional <%= classes %>">
-  <label class="text optional" for="<%= input_id %>"><%= name %></label>
-
-  <div class="dtext-previewable">
-    <% if type == "text" %>
-      <textarea id="<%= input_id %>" class="text optional" rows="20" name="<%= input_name %>" cols="30"><%= value %></textarea>
-    <% else %>
-      <input type="text" id="<%= input_id %>" class="text optional" name="<%= input_name %>" value="<%= value %>">
-    <% end %>
-    <div id="<%= preview_id %>" class="dtext-preview prose"></div>
-  </div>
-  <span class="hint">
-    <%= link_to "Formatting help", dtext_help_path, remote: true, method: :get %>.
-    <% if hint.present? %>
-      <%= hint %>.
-    <% end %>
-  </span>
-</div>
diff --git a/app/views/forum_posts/partials/edit/_form.html.erb b/app/views/forum_posts/partials/edit/_form.html.erb
index 617219d23..3a1b641d7 100644
--- a/app/views/forum_posts/partials/edit/_form.html.erb
+++ b/app/views/forum_posts/partials/edit/_form.html.erb
@@ -1,8 +1,8 @@
 <%= error_messages_for("forum_post") %>
 
 <%= edit_form_for(forum_post) do |f| %>
-  <%= dtext_field "forum_post", "body", :value => forum_post.body, :classes => "autocomplete-mentions", :input_id => "forum_post_body_for_#{forum_post.id}", :preview_id => "dtext-preview-for-#{forum_post.id}" %>
+  <%= f.input :body, as: :dtext %>
 
   <%= f.button :submit, "Submit" %>
-  <%= dtext_preview_button "forum_post", "body", :input_id => "forum_post_body_for_#{forum_post.id}", :preview_id => "dtext-preview-for-#{forum_post.id}" %>
+  <%= dtext_preview_button "forum_post_body" %>
 <% end %>
diff --git a/app/views/forum_posts/partials/new/_form.html.erb b/app/views/forum_posts/partials/new/_form.html.erb
index 622d01056..cbfa63350 100644
--- a/app/views/forum_posts/partials/new/_form.html.erb
+++ b/app/views/forum_posts/partials/new/_form.html.erb
@@ -6,8 +6,8 @@
   <% else %>
     <%= f.input :topic_id, :label => "Topic ID" %>
   <% end %>
-  <%= dtext_field "forum_post", "body", :classes => "autocomplete-mentions" %>
+  <%= f.input :body, as: :dtext %>
 
   <%= f.button :submit, "Submit" %>
-  <%= dtext_preview_button "forum_post", "body" %>
+  <%= dtext_preview_button "forum_post_body" %>
 <% end %>
diff --git a/app/views/forum_topics/_form.html.erb b/app/views/forum_topics/_form.html.erb
index f4e78c493..468befdca 100644
--- a/app/views/forum_topics/_form.html.erb
+++ b/app/views/forum_topics/_form.html.erb
@@ -10,7 +10,7 @@
     </div>
 
     <%= f.simple_fields_for :original_post do |pf| %>
-      <%= dtext_field "forum_post", "body", :classes => "autocomplete-mentions", :input_name => "forum_topic[original_post_attributes][body]", :value => forum_topic.original_post.body, :input_id => "forum_post_body_for_#{forum_topic.original_post.id}", :preview_id => "dtext-preview-for-#{forum_topic.original_post.id}" %>
+      <%= pf.input :body, as: :dtext %>
     <% end %>
 
     <% if policy(forum_topic).moderate? %>
@@ -20,6 +20,6 @@
     <% end %>
 
     <%= f.button :submit, "Submit" %>
-    <%= dtext_preview_button "forum_post", "body", :input_id => "forum_post_body_for_#{forum_topic.original_post.id}", :preview_id => "dtext-preview-for-#{forum_topic.original_post.id}" %>
+    <%= dtext_preview_button "forum_topic_original_post_body" %>
   <% end %>
 </div>
diff --git a/app/views/moderation_reports/_new.html.erb b/app/views/moderation_reports/_new.html.erb
index 0af8a497c..f433ee805 100644
--- a/app/views/moderation_reports/_new.html.erb
+++ b/app/views/moderation_reports/_new.html.erb
@@ -1,12 +1,10 @@
 <div class="report-dialog-body">
   <%= embed_wiki("help:report_notice") %>
 
-  <%# XXX dtext_field expects there to be a `moderation_report` instance variable. %>
-  <% @moderation_report = moderation_report %>
-  <%= edit_form_for(@moderation_report, format: :js, remote: true) do |f| %>
+  <%= edit_form_for(moderation_report, format: :js, remote: true) do |f| %>
     <%= f.hidden_field :model_type %>
     <%= f.hidden_field :model_id %>
-    <%= dtext_field "moderation_report", "reason", preview_id: "dtext-preview-for-moderation-report", type: "string" %>
-    <%= dtext_preview_button "moderation_report", "reason", preview_id: "dtext-preview-for-moderation-report" %>
+    <%= f.input :reason, as: :dtext, inline: true %>
+    <%= dtext_preview_button "moderation_report_reason" %>
   <% end %>
 </div>
diff --git a/app/views/pools/edit.html.erb b/app/views/pools/edit.html.erb
index 4202226de..2c2652d6a 100644
--- a/app/views/pools/edit.html.erb
+++ b/app/views/pools/edit.html.erb
@@ -6,11 +6,11 @@
       <%= error_messages_for "pool" %>
 
       <%= f.input :name, :as => :string, :input_html => { :value => @pool.pretty_name } %>
-      <%= dtext_field "pool", "description" %>
-      <%= dtext_preview_button "pool", "description" %>
+      <%= f.input :description, as: :dtext %>
       <%= f.input :post_ids_string, as: :text, label: "Posts" %>
       <%= f.input :category, :collection => ["series", "collection"], :include_blank => false %>
       <%= f.button :submit %>
+      <%= dtext_preview_button "pool_description" %>
     <% end %>
   </div>
 </div>
diff --git a/app/views/pools/new.html.erb b/app/views/pools/new.html.erb
index 165ec4497..d2f595aee 100644
--- a/app/views/pools/new.html.erb
+++ b/app/views/pools/new.html.erb
@@ -6,11 +6,11 @@
 
     <%= edit_form_for(@pool) do |f| %>
       <%= f.input :name, :as => :string, :required => true %>
-      <%= dtext_field "pool", "description" %>
+      <%= f.input :description, as: :dtext %>
       <%= f.input :post_ids_string, as: :text, label: "Posts" %>
       <%= f.input :category, :collection => ["series", "collection"], :include_blank => true, :selected => "", :required => true %>
       <%= f.button :submit, "Submit" %>
-      <%= dtext_preview_button "pool", "description" %>
+      <%= dtext_preview_button "pool_description" %>
     <% end %>
   </div>
 </div>
diff --git a/app/views/post_appeals/_new.html.erb b/app/views/post_appeals/_new.html.erb
index c418a1b8e..8cee19acc 100644
--- a/app/views/post_appeals/_new.html.erb
+++ b/app/views/post_appeals/_new.html.erb
@@ -1,11 +1,9 @@
 <div class="appeal-dialog-body">
   <%= embed_wiki("help:appeal_notice") %>
 
-  <%# XXX dtext_field expects there to be a `post_appeal` instance variable. %>
-  <% @post_appeal = post_appeal %>
-  <%= edit_form_for(@post_appeal, format: :js, remote: true) do |f| %>
+  <%= edit_form_for(post_appeal, format: :js, remote: true) do |f| %>
     <%= f.hidden_field :post_id %>
-    <%= dtext_field "post_appeal", "reason", preview_id: "dtext-preview-for-post-appeal", type: "string" %>
-    <%= dtext_preview_button "post_appeal", "reason", preview_id: "dtext-preview-for-post-appeal" %>
+    <%= f.input :reason, as: :dtext, inline: true %>
+    <%= dtext_preview_button "post_appeal_reason" %>
   <% end %>
 </div>
diff --git a/app/views/post_flags/_new.html.erb b/app/views/post_flags/_new.html.erb
index 00cc67449..1e2005ac3 100644
--- a/app/views/post_flags/_new.html.erb
+++ b/app/views/post_flags/_new.html.erb
@@ -1,11 +1,9 @@
 <div class="flag-dialog-body">
   <%= embed_wiki("help:flag_notice") %>
 
-  <%# XXX dtext_field expects there to be a `post_flag` instance variable. %>
-  <% @post_flag = post_flag %>
-  <%= edit_form_for(@post_flag, format: :js, remote: true) do |f| %>
+  <%= edit_form_for(post_flag, format: :js, remote: true) do |f| %>
     <%= f.hidden_field :post_id %>
-    <%= dtext_field "post_flag", "reason", preview_id: "dtext-preview-for-post-flag", type: "string" %>
-    <%= dtext_preview_button "post_flag", "reason", preview_id: "dtext-preview-for-post-flag" %>
+    <%= f.input :reason, as: :dtext, inline: true %>
+    <%= dtext_preview_button "post_flag_reason" %>
   <% end %>
 </div>
diff --git a/app/views/user_feedbacks/edit.html.erb b/app/views/user_feedbacks/edit.html.erb
index d7571c462..9758a573d 100644
--- a/app/views/user_feedbacks/edit.html.erb
+++ b/app/views/user_feedbacks/edit.html.erb
@@ -9,10 +9,10 @@
 
     <%= edit_form_for(@user_feedback) do |f| %>
       <%= f.input :category, :collection => ["positive", "neutral", "negative"], :include_blank => false %>
-      <%= dtext_field "user_feedback", "body" %>
+      <%= f.input :body, as: :dtext %>
       <%= f.input :is_deleted, label: "Deleted" %>
       <%= f.button :submit, "Submit" %>
-      <%= dtext_preview_button "user_feedback", "body" %>
+      <%= dtext_preview_button "user_feedback_body" %>
     <% end %>
   </div>
 </div>
diff --git a/app/views/user_feedbacks/new.html.erb b/app/views/user_feedbacks/new.html.erb
index 67a3d89d5..debad85a6 100644
--- a/app/views/user_feedbacks/new.html.erb
+++ b/app/views/user_feedbacks/new.html.erb
@@ -16,9 +16,9 @@
     <%= edit_form_for(@user_feedback) do |f| %>
       <%= f.input :user_name, :label => "User", :input_html => { value: @user_feedback.user.try(:name), data: { autocomplete: "user" } } %>
       <%= f.input :category, :collection => ["positive", "neutral", "negative"], :include_blank => false %>
-      <%= dtext_field "user_feedback", "body" %>
+      <%= f.input :body, as: :dtext %>
       <%= f.button :submit, "Submit" %>
-      <%= dtext_preview_button "user_feedback", "body" %>
+      <%= dtext_preview_button "user_feedback_body" %>
     <% end %>
   </div>
 </div>
diff --git a/app/views/wiki_pages/_form.html.erb b/app/views/wiki_pages/_form.html.erb
index bb0100e7d..8f5616dc7 100644
--- a/app/views/wiki_pages/_form.html.erb
+++ b/app/views/wiki_pages/_form.html.erb
@@ -5,7 +5,7 @@
     <%= f.input :title, error: false, input_html: { data: { autocomplete: "tag" } }, hint: "Change to rename this wiki page. Update any wikis linking to this page first." %>
     <%= f.input :other_names_string, as: :text, input_html: { size: "30x1" }, label: "Other names (#{link_to_wiki "help", "help:translated_tags"})".html_safe, hint: "Names used for this tag on other sites such as Pixiv. Separate with spaces." %>
 
-    <%= dtext_field "wiki_page", "body" %>
+    <%= f.input :body, as: :dtext %>
 
     <% if policy(@wiki_page).can_edit_locked? %>
       <%= f.input :is_locked, label: "Locked", hint: "Locked wikis can only be edited by Builders." %>
@@ -14,6 +14,6 @@
     <%= f.input :is_deleted, label: "Deleted", hint: "Check to mark this wiki page as deleted." %>
 
     <%= f.submit "Submit" %>
-    <%= dtext_preview_button "wiki_page", "body" %>
+    <%= dtext_preview_button "wiki_page_body" %>
   <% end %>
 </div>
diff --git a/app/views/wiki_pages/new.html.erb b/app/views/wiki_pages/new.html.erb
index 1449e530b..aa796d340 100644
--- a/app/views/wiki_pages/new.html.erb
+++ b/app/views/wiki_pages/new.html.erb
@@ -14,9 +14,9 @@
   <%= edit_form_for(@wiki_page) do |f| %>
     <%= f.input :title, error: false, input_html: { data: { autocomplete: "tag" } } %>
     <%= f.input :other_names_string, as: :text, input_html: { size: "30x1" }, label: "Other names (#{link_to_wiki "help", "help:translated_tags"})".html_safe, hint: "Names used for this tag on other sites such as Pixiv. Separate with spaces." %>
-    <%= dtext_field "wiki_page", "body" %>
+    <%= f.input :body, as: :dtext %>
     <%= f.submit "Submit" %>
-    <%= dtext_preview_button "wiki_page", "body" %>
+    <%= dtext_preview_button "wiki_page_body" %>
   <% end %>
 
   <%= render "tag_relationships/alias_and_implication_list", tag: @wiki_page.tag %>
diff --git a/config/initializers/simple_form.rb b/config/initializers/simple_form.rb
index 80eee625f..9fd871574 100644
--- a/config/initializers/simple_form.rb
+++ b/config/initializers/simple_form.rb
@@ -5,6 +5,9 @@
 # See https://github.com/heartcombo/simple_form#custom-components to know
 # more about custom components.
 # Dir[Rails.root.join('lib/components/**/*.rb')].each { |f| require f }
+
+require "dtext_input"
+
 #
 # Use this setup block to configure all options available in SimpleForm.
 SimpleForm.setup do |config|