Add custom imageURL icon for each layer

app/helpers/posts_helper.rb

@@ -1,9 +1,16 @@
 module PostsHelper
   def post_to_poi(post, subscription)
     # http://layar.com/documentation/browser/api/getpois-response/
+
+    if subscription.layer.icon_url.blank?
+      image_url = "%s%s/assets/layar-icons/tal-logo-100.png" % [ request.protocol, request.env['HTTP_HOST'] ]
+    else
+      image_url = subscription.layer.icon_url
+    end
+
     res = {
       :id => post.id,
-      :imageURL => "%s%s/assets/layar-icons/tal-logo-100.png" % [ request.protocol, request.env['HTTP_HOST'] ],
+      :imageURL => image_url,
       :anchor =>  {
         :geolocation => {
           :lat => post.lat,

app/models/layer.rb

@@ -2,7 +2,7 @@ class Layer < ActiveRecord::Base
   has_many :subscriptions
   has_many :feeds, :through => :subscriptions, :uniq => true
 
-  attr_accessible :name
+  attr_accessible :name, :icon_url
 
   # Unique name for Layar layer
   def layar_name

app/views/layers/_form.html.haml

@@ -8,6 +8,13 @@
 
   .field
     = f.label :name
+    %br
     = f.text_field :name
+  %br
+  .field
+    = f.label "Icon URL (optional)"
+    %br
+    = f.text_field :icon_url, :size => 60
+  %br
   .actions
     = f.submit 'Save'

db/migrate/20130424113732_add_icon_url_to_layers.rb

@@ -0,0 +1,5 @@
+class AddIconUrlToLayers < ActiveRecord::Migration
+  def change
+  	add_column :layers, :icon_url, :string
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20130417153542) do
+ActiveRecord::Schema.define(:version => 20130424113732) do
 
   create_table "delayed_jobs", :force => true do |t|
     t.integer  "priority",   :default => 0
@@ -45,6 +45,7 @@ ActiveRecord::Schema.define(:version => 20130417153542) do
     t.string   "name"
     t.datetime "created_at", :null => false
     t.datetime "updated_at", :null => false
+    t.string   "icon_url"
   end
 
   create_table "posts", :force => true do |t|