way better autocomplete, ranks by popularity

app.rb

@@ -360,8 +360,8 @@ post '/tags/remove' do
   redirect request.referer
 end
 
-get '/tags/suggestions/:name.json' do |name|
-  Tag.suggestions(name).collect {|t| t.name}.to_json
+get '/tags/autocomplete/:name.json' do |name|
+  Tag.autocomplete(name).collect {|t| t[:name]}.to_json
 end
 
 get '/browse/?' do

models/tag.rb

@@ -5,21 +5,21 @@ class Tag < Sequel::Model
 
   def before_create
     super
-    values[:name].downcase!
-    values[:name].strip!
+    values[:name] = self.class.clean_name values[:name]
+  end
+
+  def self.clean_name(name)
+    name.downcase.strip
   end
 
   def self.create_unless_exists(name)
-    name = name.downcase.strip
+    name = clean_name name
     return nil if name == '' || name.nil?
     dataset.filter(name: name).first || create(name: name)
   end
 
-  def self.suggestions(name, limit=3)
-    Tag.filter(name: /^#{name}/i).
-    order(:name).
-    limit(limit).
-    all
+  def self.autocomplete(name, limit=3)
+    DB["select tags.name,count(*) as c from sites_tags inner join tags on tags.id=sites_tags.tag_id where tags.name != '' and tags.name LIKE ? group by tags.name having count(*) > 1 order by c desc LIMIT ?", name+'%', limit].all
   end
 
   def self.popular_names(limit=10)

views/layout.erb

@@ -63,7 +63,7 @@
       }, {
         name: 'tags',
         source: function(query, callback) {
-          $.get('/tags/suggestions/'+query+'.json', function(data) {
+          $.get('/tags/autocomplete/'+query+'.json', function(data) {
             console.log(data)
 
             var suggestions = JSON.parse(data)