Simple search in Mongoid using mongoid_search gem

Question

I'm trying to implement search in one of my models. I'm using the gem "mongoid_search" and I'm mixing it with the railscast #240 on search. It seems to be returning an empty array and I can't figure out why. Can anyone point me in the right direction?

My model looks like this:

include Mongoid::Search 

attr_accessible :twitterUsername, :twitterName, :twitterLocation, :twitterDescription, :projects

def self.search(search)
    if search
        search_in :twitterUsername, :twitterName, :twitterLocation, :twitterDescription, :projects
    else
        scoped
    end
end

My controller:

def index
    @users = User.search(params[:search])

    respond_to do |format|
        format.html # index.html.erb
        format.json { render json: @users }
    end
end

And my view:

<%= form_tag users_path, :method => 'get', :id => "users_search" do %>
    <p>
        <%= text_field_tag :search, params[:search] %>
        <%= submit_tag "Search", :name => nil %>
    </p>
<% end %>

UPDATE

I define the twitterUsername (sorry for the bad naming convention) in the model as well:

field :provider, :type => String
field :uid, :type => String
field :twitterName, :type => String
field :twitterUsername, :type => String
field :twitterAvatar, :type => String
field :twitterUrl, :type => String
field :twitterPortfolioUrl, :type => String
field :twitterLocation, :type => String
field :twitterDescription, :type => String
field :email, :type => String
field :description, :type => String
field :portfolioUrl, :type => String
field :watchers, :type => Integer
field :inspirations, :type => Integer
field :invitees, :type => Integer
field :shot, :type => String
field :remote_image_url, :type => String
field :hireMe, :type => Boolean
field :projects, :type => Integer
key :twitterUsername


def self.create_with_omniauth(auth)
    create! do |user|
        user.provider = auth['provider']
        user.uid = auth['uid']
        if auth['info']
            user._id = auth['info']['nickname'] || ""
            user.twitterName = auth['info']['name'] || ""
            user.twitterUsername = auth['info']['nickname'] || ""
            user.twitterAvatar = auth['info']['image'] || ""
            user.twitterUrl = auth['info']['urls']['Twitter'] || ""
            user.twitterPortfolioUrl = auth['info']['urls']['Website'] || ""
            user.twitterLocation = auth['info']['location'] || ""
            user.twitterDescription = auth['info']['description'] || ""
        end
    end
end

UPDATE 2

If I count the users, it seems to be returning a single user (which is correct since I'm the only one signed up right now):

<% if @users.count > 0 %>
  <%= @users.count %>
<% end %>

if I do:

<% if @users.count > 0 %>
  <%= @users.twitterUsername %>
<% end %>

it gives me this error: undefined method `twitterUsername' for User:Class.

UPDATE 3

It gives me an error when I try to run tail log/development.log:

± % tail log/development.log                                                                                                             
22:     
app/views/users/index.html.erb:19:in `block in _app_views_users_index_html_erb__1766206529136141992_2490506940'
app/views/users/index.html.erb:18:in `each'
app/views/users/index.html.erb:18:in `_app_views_users_index_html_erb__1766206529136141992_2490506940'
app/controllers/users_controller.rb:7:in `index'


Rendered /Users/holgersindbaek/.rbenv/versions/1.9.3-p125-perf/lib/ruby/gems/1.9.1/gems/actionpack-3.2.2/lib/action_dispatch/middleware/templates/rescues/_trace.erb (5.3ms)
Rendered /Users/holgersindbaek/.rbenv/versions/1.9.3-p125-perf/lib/ruby/gems/1.9.1/gems/actionpack-3.2.2/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.2ms)
Rendered /Users/holgersindbaek/.rbenv/versions/1.9.3-p125-perf/lib/ruby/gems/1.9.1/gems/actionpack-3.2.2/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (13.9ms)

UPDATE 4

I get this in my console if when I run a search:

Started GET "/users?utf8=%E2%9C%93&search=holgersindbaek" for 127.0.0.1 at 2012-04-10     23:24:55 +0200
Processing by UsersController#index as HTML
Parameters: {"utf8"=>"✓", "search"=>"holgersindbaek"}
MONGODB (1ms) flow04_development['users'].find({:_id=>"holgersindbaek"}).limit(-1).sort([[:_id, :asc]])
Rendered users/index.html.erb within layouts/application (4.7ms)
Completed 500 Internal Server Error in 8ms

ActionView::Template::Error (undefined method `id' for User:Class):
22:         <% if current_user == user %>
23: 
24:         <% else %>
25:           <% if current_user.follower_of?(user) %>
26:             <%= link_to "Unfollow", unfollow_user_path(user), :remote => true,     :class=>'unfollow' %>
27:           <% else %>
28:             <%= link_to "Follow", follow_user_path(user), :remote => true, :class=>'follow' %>
app/views/users/index.html.erb:25:in `block in _app_views_users_index_html_erb__83132873031271873_2505118720'
app/views/users/index.html.erb:18:in `each'
app/views/users/index.html.erb:18:in `_app_views_users_index_html_erb__83132873031271873_2505118720'
app/controllers/users_controller.rb:7:in `index'

Answer 1

The problem, as I see it, is that mongoid-search adds an attribute named "_keywords" to your document when you save it. It then searches documents based on "_keywords"

So, you effectively need to reindex the collection. Try this:

Add to user model

field :reindexed, type: Boolean, default: false

run the following

User.where(reindexed: false).each {|u| u.reindexed = true; u.save}

Then when you search, it should be happy.

Answer 2

I ended up not doing the search in an if/else statement. Ended up doing:

search_in :twitterUsername, :twitterName, :twitterLocation, :twitterDescription

As simple as that. I'm using the index for search, since I'm not using that for anything else.