Remove not null constraint on project_id in services.

app/models/service.rb

@@ -5,12 +5,12 @@
 #  id         :integer          not null, primary key
 #  type       :string(255)
 #  title      :string(255)
-#  project_id :integer          not null
+#  project_id :integer
 #  created_at :datetime
 #  updated_at :datetime
 #  active     :boolean          default(FALSE), not null
 #  properties :text
-#  tempalate  :boolean          default(FALSE)
+#  template   :boolean          default(FALSE)
 
 # To add new service you should build a class inherited from Service
 # and implement a set of methods

db/migrate/20150211174341_allow_null_in_services_project_id.rb

@@ -0,0 +1,5 @@
+class AllowNullInServicesProjectId < ActiveRecord::Migration
+  def change
+    change_column :services, :project_id, :integer, null: true
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150211172122) do
+ActiveRecord::Schema.define(version: 20150211174341) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -360,7 +360,7 @@ ActiveRecord::Schema.define(version: 20150211172122) do
   create_table "services", force: true do |t|
     t.string   "type"
     t.string   "title"
-    t.integer  "project_id",                 null: false
+    t.integer  "project_id"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.boolean  "active",     default: false, null: false