Bind typehead to contact too

app/assets/javascripts/autocomplete.js.coffee

@@ -0,0 +1,29 @@
+class @Autocomplete
+  @bindTypeahead: (obj) ->
+    $(obj.selector).typeahead(
+      highlight: true,
+      hint: false
+    ,
+      displayKey: "display_key"
+      source: Autocomplete.constructSourceAdapter(obj.remote)
+    ).on('typeahead:selected', (e, item) ->
+      $(obj.hiddenSelector).val item.id
+
+      ok = $(obj.hiddenSelector).parent('div.has-feedback').find('.js-typeahead-ok')
+      remove = $(obj.hiddenSelector).parents('div.has-feedback').find('.js-typeahead-remove')
+
+      ok.removeClass('hidden')
+      remove.addClass('hidden')
+    )
+
+  @constructSourceAdapter: (remote) ->
+    source = new Bloodhound(
+      datumTokenizer: (d) ->
+        Bloodhound.tokenizers.whitespace d.display_key
+
+      queryTokenizer: Bloodhound.tokenizers.whitespace
+      remote: "#{remote}?q=%QUERY"
+    )
+
+    source.initialize()
+    source.ttAdapter()