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87 lines
2.6 KiB
87 lines
2.6 KiB
# -*- encoding : utf-8 -*-
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# This file is part of Wiki UFC.
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# Copyright (C) 2007-2015 by Álinson Xavier <isoron@gmail.com>
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# Copyright (C) 2007-2008 by Adriano Freitas <adrianoblue@gmail.com>
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# Copyright (C) 2007-2008 by André Castro <aisushin@gmail.com>
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# Copyright (C) 2007-2008 by Rafael Barbosa <86.rafael@gmail.com>
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# Copyright (C) 2007-2008 by Henrique Bustamante <bustamante.rique@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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require 'fileutils.rb'
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class Attachment < ActiveRecord::Base
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# Plugins
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acts_as_paranoid
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# Associacoes
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belongs_to :course
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# Validacao
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validates_presence_of :file_name
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validates_numericality_of :size, :allow_nil => true, :only_integer => true
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def self.find_front_page
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Attachment.find(:all, :conditions => [ "front_page = ?", true ])
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end
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# Atributo virtual file
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def file=(new_file)
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@tmp_file = new_file
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self.size = new_file.size
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self.content_type ||= "application/octet-stream"
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end
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protected
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def sanitize(filename)
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filename = File.basename(filename)
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filename.gsub(/[^\w\.\-]/, '_')
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end
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def validate
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if @tmp_file
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errors.add("file") if @tmp_file.size == 0
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errors.add("file", I18n.t(:is_too_large)) if @tmp_file.size > App.max_upload_file_size
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else
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# Caso o objeto possua id, significa que ele já está no banco de dados.
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# Um arquivo em branco, entao, não é inválido: significa que a pessoa só quer
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# modificar a descrição, ou algo assim..
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errors.add("file", I18n.t(:is_needed)) if not self.id
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end
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errors.add("path", "muito longo") if !@path.nil? and @path.split('/').size > 10
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end
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# Salva o arquivo fisicamente no HD
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def after_save
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@file_path = "#{Rails.root}/public/upload/#{course.id}/#{self.id}"
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FileUtils.mkdir_p(File.dirname(@file_path))
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if @tmp_file
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logger.debug("Saving #{self.id}")
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File.open(@file_path, "wb") do |f|
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f.write(@tmp_file.read)
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end
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end
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end
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# Deleta o arquivo
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#def after_destroy
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# @file_path = "#{Rails.root}/public/upload/#{course.id}/#{self.id}"
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# File.delete(@file_path) if File.exists?(@file_path)
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#end
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end
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