questions in full text search + show 15 results (publiclab#2136)

* Update typeahead_service.rb

* Update typeahead_service.rb

* Update restful_typeahead.js

* Update revision.rb

app/assets/javascripts/restful_typeahead.js

@@ -9,7 +9,7 @@
 jQuery(document).ready(function() {
   var el = $('input.search-query.typeahead');
   var typeahead = el.typeahead({
-    items: 8,
+    items: 15,
     minLength: 3,
     autoSelect: false,
     source: function (query, process) {

app/models/revision.rb

@@ -6,6 +6,8 @@ class Revision < ActiveRecord::Base
 
   belongs_to :node, foreign_key: 'nid', dependent: :destroy, counter_cache: :drupal_node_revisions_count
   has_one :drupal_users, foreign_key: 'uid'
+  has_many :node_tag, foreign_key: 'nid'
+  has_many :tag, through: :node_tag
 
   validates :title,
     presence: :true,

app/services/typeahead_service.rb

@@ -198,16 +198,27 @@ def search_tags(srchString, limit = 5)
   end
 
   # Search question entries for matching text
-  def search_questions(srchString, limit = 5)
+  def search_questions(input, limit = 5)
     sresult = TagList.new
-    questions = Node.where(
-      'type = "note" AND node.status = 1 AND title LIKE ?',
-      '%' + srchString + '%'
-    )
-      .joins(:tag)
-      .where('term_data.name LIKE ?', 'question:%')
-      .order('node.nid DESC')
-      .limit(limit)
+    if ActiveRecord::Base.connection.adapter_name == 'Mysql2'
+      questions = Node.search(input)
+        .group(:nid)
+        .includes(:node)
+        .references(:node)
+        .limit(limit)
+        .where("node.type": "note", "node.status": 1)
+        .order('node.changed DESC')
+        .joins(:tag)
+        .where('term_data.name LIKE ?', 'question:%')
+    else 
+      questions = Node.where('title LIKE ?', '%' + input + '%')
+        .joins(:tag)
+        .where('term_data.name LIKE ?', 'question:%')
+        .limit(limit)
+        .group(:nid)
+        .where(type: "note", status: 1)
+        .order(changed: :desc)
+    end
     questions.each do |match|
       tval = TagResult.fromSearch(
         match.nid,