fixes #2418 (includes hiding deleted dmails and allowing filtering on user name)

app/views/dmails/show.html.erb

@@ -21,6 +21,7 @@
       <p>
         <%= link_to "Respond", new_dmail_path(:respond_to_id => @dmail) %>
         | <%= link_to "Forward", new_dmail_path(:respond_to_id => @dmail, :forward => true) %>
+        | <%= link_to "Filter messages like these", edit_maintenance_user_dmail_filter_path(:dmail_id => @dmail.id) %>
       </p>
     </div>
   </div>

app/views/maintenance/user/dmail_filters/edit.html.erb

@@ -0,0 +1,37 @@
+<div id="c-users">
+  <div id="a-edit">
+    <h1>Edit Message Filters</h1>
+
+    <div>
+      <h2><%= @dmail.title %></h2>
+
+      <ul style="margin-bottom: 1em;">
+        <li><strong>Sender</strong>: <%= link_to_user @dmail.from %></li>
+        <li><strong>Recipient</strong>: <%= link_to_user @dmail.to, :raw => true %></li>
+        <li><strong>Date</strong>: <%= compact_time(@dmail.created_at) %></li>
+        <% if CurrentUser.user.is_moderator? %>
+          <li><strong>Sender IP</strong>: <%= @dmail.creator_ip_addr %></li>
+        <% end %>
+      </ul>
+
+      <h3>Body</h3>
+      <div class="prose">
+        <%= format_text(@dmail.body) %>
+      </div>
+    </div>
+
+    <%= simple_form_for @dmail_filter, :url => maintenance_user_dmail_filter_path(:dmail_id => @dmail.id), :method => :put do |f| %>
+      <div class="input text optional field_with_hint">
+        <label class="text" for="dmail_filter_words">Banned Words</label>
+        <%= text_area_tag "dmail_filter[words]", @dmail_filter.words, :id => "dmail_filter_words", :class => "text", :style => "height: 10em;" %>
+        <p class="hint">A list of banned words or users (space delimited). Any message you receive with a banned word will automatically be deleted. Make sure user names have no spaces in them (replace with underscores).</p>
+      </div>
+
+      <%= f.button :submit, "Submit" %>
+    <% end %>
+  </div>
+</div>
+
+<% content_for(:page_title) do %>
+  Edit Message Filters - <%= Danbooru.config.app_name %>
+<% end %>