Add a button to forgot all readings

app/controllers/readings_controller.rb

@@ -18,6 +18,11 @@ def destroy
     end
   end
 
+  def destroy_all
+    Node.unread_all_by(current_account.id)
+    redirect_to readings_path
+  end
+
 protected
 
   def find_node

app/models/node.rb

@@ -92,8 +92,12 @@ def threads
 
 ### Readings ###
 
+  def self.readings_keys_of(account_id)
+    $redis.keys("readings/*/#{account_id}")
+  end
+
   def self.readings_of(account_id)
-    ids = $redis.keys("readings/*/#{account_id}").map {|x| x.scan(/\/(\d+)\//).first.first }
+    ids = readings_keys_of(account_id).map {|x| x.scan(/\/(\d+)\//).first.first }
     visible.where(:id => ids)
   end
 
@@ -106,6 +110,11 @@ def unread_by(account_id)
     $redis.del("readings/#{self.id}/#{account_id}")
   end
 
+  def self.unread_all_by(account_id)
+    keys = readings_keys_of(account_id)
+    $redis.del(*keys) if keys.present?
+  end
+
   def self.last_reading(node_id, account_id)
     time = $redis.get("readings/#{node_id}/#{account_id}")
     time && Time.at(time.to_i)

app/views/readings/index.html.haml

@@ -1,3 +1,8 @@
+- content_for :column do
+  #readings_box.box
+    %h1 Mes lectures
+    = button_to "Tout oublier", readings_path, :method => :delete, :class => "delete_button"
+
 =h1 "Les derniers contenus que j'ai lu"
 = paginated_section @nodes do
   #contents

config/routes.rb

@@ -67,6 +67,7 @@
     end
   end
   resources :readings, :only => [:index, :destroy]
+  delete "readings" => "readings#destroy_all"
   resources :tags, :only => [:index, :show] do
     collection do
       get :autocomplete