view app/models/watcher.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# Redmine - project management software
# Copyright (C) 2006-2011  Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

class Watcher < ActiveRecord::Base
  belongs_to :watchable, :polymorphic => true
  belongs_to :user

  validates_presence_of :user
  validates_uniqueness_of :user_id, :scope => [:watchable_type, :watchable_id]

  # Unwatch things that users are no longer allowed to view
  def self.prune(options={})
    if options.has_key?(:user)
      prune_single_user(options[:user], options)
    else
      pruned = 0
      User.find(:all, :conditions => "id IN (SELECT DISTINCT user_id FROM #{table_name})").each do |user|
        pruned += prune_single_user(user, options)
      end
      pruned
    end
  end

  protected

  def validate
    errors.add :user_id, :invalid unless user.nil? || user.active?
  end

  private

  def self.prune_single_user(user, options={})
    return unless user.is_a?(User)
    pruned = 0
    find(:all, :conditions => {:user_id => user.id}).each do |watcher|
      next if watcher.watchable.nil?

      if options.has_key?(:project)
        next unless watcher.watchable.respond_to?(:project) && watcher.watchable.project == options[:project]
      end

      if watcher.watchable.respond_to?(:visible?)
        unless watcher.watchable.visible?(user)
          watcher.destroy
          pruned += 1
        end
      end
    end
    pruned
  end
end