Adding reblogs, favourites, improving atom generation

app/models/follow.rb

@@ -2,20 +2,23 @@ class Follow < ActiveRecord::Base
   belongs_to :account
   belongs_to :target_account, class_name: 'Account'
 
+  has_one :stream_entry, as: :activity
+
   validates :account, :target_account, presence: true
+  validates :account_id, uniqueness: { scope: :target_account_id }
 
   def verb
     :follow
   end
 
-  def object_type
-    :person
-  end
-
   def target
     self.target_account
   end
 
+  def object_type
+    target.object_type
+  end
+
   def content
     "#{self.account.acct} started following #{self.target_account.acct}"
   end
@@ -24,6 +27,10 @@ class Follow < ActiveRecord::Base
     content
   end
 
+  def mentions
+    []
+  end
+
   after_create do
     self.account.stream_entries.create!(activity: self)
   end