Add wiki search option for whether other names are present

app/models/wiki_page.rb

@@ -63,6 +63,12 @@ class WikiPage < ActiveRecord::Base
         q = q.where("creator_id = (select _.id from users _ where lower(_.name) = ?)", params[:creator_name].tr(" ", "_").mb_chars.downcase)
       end
 
+      if params[:other_names_present] == "yes"
+        q = q.where("other_names is not null and other_names != ''")
+      elsif params[:other_names_present] == "no"
+        q = q.where("other_names is null or other_names = ''")
+      end
+
       params[:order] ||= params.delete(:sort)
       if params[:order] == "time" || params[:order] == "Date"
         q = q.order("updated_at desc")

app/views/wiki_pages/search.html.erb

@@ -6,6 +6,11 @@
       <%= search_field "body_matches", :label => "Body" %>
       <%= search_field "other_names_match", :label => "Other names" %>
 
+      <div class="input">
+        <label for="search_other_names_present">Other names present?</label>
+        <%= select "search", "other_names_present", ["yes", "no"], :include_blank => true %>
+      </div>
+
       <div class="input">
         <label for="search_order">Order</label>
         <%= select "search", "order", ["Name", "Date"] %>