Script to delete inconsistent vizs #3286

lib/tasks/viz_maintenance.rake

@@ -0,0 +1,44 @@
+namespace :cartodb do
+  namespace :vizs do
+
+    desc "Purges broken visualizations due to bug during deletion."
+    task :delete_inconsistent, [:username] => :environment do |t, args|
+      username = args[:username]
+      raise "You should pass a username param" unless username
+      user = User[username: username]
+      collection = CartoDB::Visualization::Collection.new.fetch(user_id: user.id)
+
+      collection.each do |viz|
+        if is_inconsistent?(viz)
+          delete_with_confirmation(viz)
+        end
+      end
+    end
+
+    def is_inconsistent?(viz)
+      (viz.table? && viz.related_tables.empty?) || (viz.derived? && viz.map.nil?)
+    end
+
+    def delete_with_confirmation(viz)
+      display_info(viz)
+      if ok_to_delete?
+        viz.delete
+        STDOUT.puts "deleted!"
+      end
+    end
+
+    def display_info(viz)
+      STDOUT.puts "\nviz.name = #{viz.name}"
+      STDOUT.puts "viz.type = #{viz.type}"
+      STDOUT.puts "viz.related_tables = #{viz.related_tables.map {|t| t.name}}"
+      STDOUT.puts "viz.map_id = #{viz.map_id}"
+    end
+
+    def ok_to_delete?
+      STDOUT.puts "About to delete. Are you sure? (y/n)"
+      input = STDIN.gets.strip
+      return input == 'y'
+    end
+
+  end
+end