implement synapse autocomplete controller function to make the results distinct. fixes #139

app/assets/javascripts/Jit/graphsettings-event-handlers.js

@@ -61,6 +61,9 @@ function nodeDoubleClickHandler(node, e) {
     
 }//doubleClickNodeHandler
 
+/*
+ * Returns a boolean saying if the node was double clicked in our understanding of the word
+ */
 function nodeWasDoubleClicked() {
    //grab the timestamp of the click 
    var storedTime = MetamapsModel.lastNodeClick;

app/controllers/synapses_controller.rb

@@ -5,7 +5,17 @@ class SynapsesController < ApplicationController
     
   respond_to :html, :js, :json
   
-  autocomplete :synapse, :desc, :full => true
+  def autocomplete_synapse_desc
+    term = params[:term]
+    if term && !term.empty?
+      items = Synapse.select('DISTINCT "desc"').
+        where('LOWER("desc") like ?', term.downcase + '%').
+        limit(10).order('"desc"')
+    else
+      items = {}
+    end
+    render :json => json_for_autocomplete(items, :desc)
+  end
   
   # GET synapses
   # or GET users/:user_id/synapses