Display hydrants on the map

app/controllers/welcome_controller.rb

@@ -1,12 +1,14 @@
 class WelcomeController < ApplicationController
   def index
+    @zoom = 15
     # Default coordinates: Boston center
     @lat, @lng = 42.358431, -71.059773
-    @zoom = 15
+    @hydrants = []
     address, city, state = params[:address], params[:city], params[:state]
     if address && city && state
-      @lat, @lng = Address.find_lat_lng("#{address}, #{city}, #{state}")
       @zoom = 18
+      @lat, @lng = Address.find_lat_lng("#{address}, #{city}, #{state}")
+      @hydrants = Hydrant.find_closest(@lat, @lng)
     end
   end
 end

app/views/layouts/application.html.erb

@@ -16,6 +16,17 @@
         mapTypeId: google.maps.MapTypeId.ROADMAP
       };
       map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
+
+      var redMarker = '/images/markers/red.png';
+      var greenMarker = '/images/markers/green.png';
+<% @hydrants.each do |hydrant| %>
+      var h<%= hydrant.city_id %>LatLng = new google.maps.LatLng(<%= hydrant.lat %>, <%= hydrant.lng %>);
+      var h<%= hydrant.city_id %>Marker = new google.maps.Marker({
+          position: h<%= hydrant.city_id %>LatLng,
+          map: map,
+          icon: <%= hydrant.user_id ? "greenMarker" : "redMarker" %>
+      });
+<% end %>
     })
     </script>
     <%= csrf_meta_tag %>

app/views/welcome/index.html.erb

@@ -3,7 +3,7 @@
   <p id="tagline">
     Claim responsibility for shoveling out a fire hydrant after it snows.
   </p>
-  <%= form_tag root_path, :method => :get do %>
+  <%= form_tag do %>
     <%= label_tag "address" %>
     <%= text_field_tag "address", params[:address], :tabindex => 1 %>
     <%= label_tag "city" %>