make sure URL does not start with a slash (validation for #59 and #64)

app/models/monologue/posts_revision.rb

@@ -13,6 +13,7 @@ class PostsRevision < ActiveRecord::Base
     validates :title, :presence =>  true
     validates :content, :presence =>  true
     validates :url, :presence =>  true
+    validate :url_do_not_start_with_slash
     validates :user_id, :presence =>  true
 #    validates :post_id, :presence =>  true # TODO: do something about this validation on the first creation of a POST
     validates :published_at, :presence =>  true
@@ -27,6 +28,10 @@ def full_url
       "#{Monologue::Engine.routes.url_helpers.root_path}#{self.url}"
     end
 
+    def url_do_not_start_with_slash
+      errors.add(:url, I18n.t("activerecord.errors.models.monologue/posts_revision.attributes.url.start_with_slash")) if self.url.start_with?("/")
+    end
+
     private 
 
       def generate_url

config/locales/en.yml

@@ -109,4 +109,7 @@ en:
           attributes:
             published_at:
               blank:
-                "'Published at' is required"
+                "'Published at' is required"
+            url:
+              start_with_slash:
+                "URL can't start with a slash ('/')"

config/locales/fr.yml

@@ -109,4 +109,7 @@ fr:
           attributes:
             published_at:
               blank:
-                "'Publié le' est requis"
+                "'Publié le' est requis"
+            url:
+              start_with_slash:
+                "L'adresse URL ne peut débuter par un slash ('/')"

spec/models/monologue/posts_revision_spec.rb

@@ -28,9 +28,13 @@
     post.url.should == "2012/this-is-a-great-title"
   end
 
+  it "should not let you create a post with a url starting with a '/'" do
+    expect { Factory(:posts_revision,  :url => "/whatever") }.to raise_error(ActiveRecord::RecordInvalid)
+  end
+
   it { validate_presence_of(:title) }
   it { validate_presence_of(:content) }
   it { validate_presence_of(:user_id) }
   it { validate_presence_of(:published_at) }
 
-end
+end