Using thumbs_up gem while iterating - ruby-on-rails

Question

I'm using the thumbs_up gem in my application and I'm trying to figure out the best way to save votes in my controller while iterating.
Here is my model:
class Vendor < ActiveRecord::Base
has_many :inventory_items
has_many :items, through: :inventory_items
has_many :shopping_lists, through: :inventory_items
acts_as_voteable
end
my current controller:
def vote_for_vendor
# not sure what to put in here
end
def vote_against_vendor
# not sure what to put in here
end
my current view:
<% provide(:title, 'Stores') %>
<table class="table table-condensed table-hover">
<tr>
<th>Name</th>
<th>Address</th>
<th>Favorite?</th>
</tr>
<% #vendors.each do |v| %>
<tr>
<td><%= v.name %></td>
<td><%= v.address %></td>
<td>
<% if current_user.voted_for(v) %>
<%= link_to 'unlike', vote_against_vendor_vendors_path(vendor_id: v.id), :remote => true %>
<% else %>
<%= link_to 'like', vote_for_vendor_vendors_path(vendor_id: v.id), :remote => true %>
<% end %>
</td>
</tr>
</table>
Most of the examples I've seen have used params([]) to pass the relevant information to the controller. I don't really have params because this is just my index page that shows all vendors. How can I save votes using this gem while iterating? Thanks in advance!
Updated Controller w/ help from MrYoshi
class VendorsController < ApplicationController
def index
#vendors = Vendor.all
end
def vote_for_vendor
vendor = Vendor.find(params[:vendor_id])
current_user.vote_for(vendor)
respond_to do |format|
format.js
end
end
def vote_against_vendor
vendor = Vendor.find(params[:vendor_id])
current_user.vote_against(vendor)
respond_to do |format|
format.js
end
end
end
my routes:
resources :vendors do
collection { post :vote_for_vendor }
collection { post :vote_agaist_vendor }
end
Current Server Error
Started GET "/vendors/vote_for_vendor?vendor_id=4" for 127.0.0.1 at 2013-09-06 10:07:29 -0700
AbstractController::ActionNotFound (The action 'show' could not be found for VendorsController):
...........
Rendered /Users/#Myname/.rvm/gems/ruby-2.0.0-p195/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/unknown_action.erb within rescues/layout (0.5ms)

Answer 1

I give you the start of what you want, and you will be able to do the rest by yourself I think:
View:
<% if current_user.voted_for(v) %>
<%= link_to 'unlike', vote_against_vendor_vendors_path(vendor_id: v.id), :remote => true %>
<% else %>
<%= link_to 'like', vote_for_vendor_vendors_path(vendor_id: v.id), :remote => true %>
<% end %>
Controller:
def vote_for_vendor
vendor = Vendor.find(params[:vendor_id])
current_user.vote_for(vendor)
render :nothing => true
end
And the vote_against is pretty simple to guess now that you have this one above ;)

Answer 2

For your 'current server error' (AbstractController::ActionNotFound (The action 'show' could not be found for VendorsController):), you need to add a member route to your config/routes.rb file, like this:
resources :vendors do
member do
post 'vote_for_vendor'
post 'vote_against_vendor'
end
end
You are currently using collection routes which are for resources that don't need a particular ID to work. I highly recommend reading the Rails Guide on routes:
Rails Guide Documentation on Routes