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Rails3: replace deprecated 'before_save' method at Attachment model....
Toshi MARUYAMA -
r6636:9f5a6a29544c
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1 1 # Redmine - project management software
2 2 # Copyright (C) 2006-2011 Jean-Philippe Lang
3 3 #
4 4 # This program is free software; you can redistribute it and/or
5 5 # modify it under the terms of the GNU General Public License
6 6 # as published by the Free Software Foundation; either version 2
7 7 # of the License, or (at your option) any later version.
8 8 #
9 9 # This program is distributed in the hope that it will be useful,
10 10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 12 # GNU General Public License for more details.
13 13 #
14 14 # You should have received a copy of the GNU General Public License
15 15 # along with this program; if not, write to the Free Software
16 16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 17
18 18 require "digest/md5"
19 19
20 20 class Attachment < ActiveRecord::Base
21 21 belongs_to :container, :polymorphic => true
22 22 belongs_to :author, :class_name => "User", :foreign_key => "author_id"
23 23
24 24 validates_presence_of :container, :filename, :author
25 25 validates_length_of :filename, :maximum => 255
26 26 validates_length_of :disk_filename, :maximum => 255
27 27 validate :validate_max_file_size
28 28
29 29 acts_as_event :title => :filename,
30 30 :url => Proc.new {|o| {:controller => 'attachments', :action => 'download', :id => o.id, :filename => o.filename}}
31 31
32 32 acts_as_activity_provider :type => 'files',
33 33 :permission => :view_files,
34 34 :author_key => :author_id,
35 35 :find_options => {:select => "#{Attachment.table_name}.*",
36 36 :joins => "LEFT JOIN #{Version.table_name} ON #{Attachment.table_name}.container_type='Version' AND #{Version.table_name}.id = #{Attachment.table_name}.container_id " +
37 37 "LEFT JOIN #{Project.table_name} ON #{Version.table_name}.project_id = #{Project.table_name}.id OR ( #{Attachment.table_name}.container_type='Project' AND #{Attachment.table_name}.container_id = #{Project.table_name}.id )"}
38 38
39 39 acts_as_activity_provider :type => 'documents',
40 40 :permission => :view_documents,
41 41 :author_key => :author_id,
42 42 :find_options => {:select => "#{Attachment.table_name}.*",
43 43 :joins => "LEFT JOIN #{Document.table_name} ON #{Attachment.table_name}.container_type='Document' AND #{Document.table_name}.id = #{Attachment.table_name}.container_id " +
44 44 "LEFT JOIN #{Project.table_name} ON #{Document.table_name}.project_id = #{Project.table_name}.id"}
45 45
46 46 cattr_accessor :storage_path
47 47 @@storage_path = Redmine::Configuration['attachments_storage_path'] || "#{Rails.root}/files"
48 48
49 before_save :files_to_final_location
50
49 51 def validate_max_file_size
50 52 if self.filesize > Setting.attachment_max_size.to_i.kilobytes
51 53 errors.add(:base, :too_long, :count => Setting.attachment_max_size.to_i.kilobytes)
52 54 end
53 55 end
54 56
55 57 def file=(incoming_file)
56 58 unless incoming_file.nil?
57 59 @temp_file = incoming_file
58 60 if @temp_file.size > 0
59 61 self.filename = sanitize_filename(@temp_file.original_filename)
60 62 self.disk_filename = Attachment.disk_filename(filename)
61 63 self.content_type = @temp_file.content_type.to_s.chomp
62 64 if content_type.blank?
63 65 self.content_type = Redmine::MimeType.of(filename)
64 66 end
65 67 self.filesize = @temp_file.size
66 68 end
67 69 end
68 70 end
69 71
70 72 def file
71 73 nil
72 74 end
73 75
74 76 # Copies the temporary file to its final location
75 77 # and computes its MD5 hash
76 def before_save
78 def files_to_final_location
77 79 if @temp_file && (@temp_file.size > 0)
78 80 logger.info("Saving attachment '#{self.diskfile}' (#{@temp_file.size} bytes)")
79 81 md5 = Digest::MD5.new
80 82 File.open(diskfile, "wb") do |f|
81 83 buffer = ""
82 84 while (buffer = @temp_file.read(8192))
83 85 f.write(buffer)
84 86 md5.update(buffer)
85 87 end
86 88 end
87 89 self.digest = md5.hexdigest
88 90 end
89 91 @temp_file = nil
90 92 # Don't save the content type if it's longer than the authorized length
91 93 if self.content_type && self.content_type.length > 255
92 94 self.content_type = nil
93 95 end
94 96 end
95 97
96 98 # Deletes file on the disk
97 99 def after_destroy
98 100 File.delete(diskfile) if !filename.blank? && File.exist?(diskfile)
99 101 end
100 102
101 103 # Returns file's location on disk
102 104 def diskfile
103 105 "#{@@storage_path}/#{self.disk_filename}"
104 106 end
105 107
106 108 def increment_download
107 109 increment!(:downloads)
108 110 end
109 111
110 112 def project
111 113 container.project
112 114 end
113 115
114 116 def visible?(user=User.current)
115 117 container.attachments_visible?(user)
116 118 end
117 119
118 120 def deletable?(user=User.current)
119 121 container.attachments_deletable?(user)
120 122 end
121 123
122 124 def image?
123 125 self.filename =~ /\.(jpe?g|gif|png)$/i
124 126 end
125 127
126 128 def is_text?
127 129 Redmine::MimeType.is_type?('text', filename)
128 130 end
129 131
130 132 def is_diff?
131 133 self.filename =~ /\.(patch|diff)$/i
132 134 end
133 135
134 136 # Returns true if the file is readable
135 137 def readable?
136 138 File.readable?(diskfile)
137 139 end
138 140
139 141 # Bulk attaches a set of files to an object
140 142 #
141 143 # Returns a Hash of the results:
142 144 # :files => array of the attached files
143 145 # :unsaved => array of the files that could not be attached
144 146 def self.attach_files(obj, attachments)
145 147 attached = []
146 148 if attachments && attachments.is_a?(Hash)
147 149 attachments.each_value do |attachment|
148 150 file = attachment['file']
149 151 next unless file && file.size > 0
150 152 a = Attachment.create(:container => obj,
151 153 :file => file,
152 154 :description => attachment['description'].to_s.strip,
153 155 :author => User.current)
154 156 obj.attachments << a
155 157
156 158 if a.new_record?
157 159 obj.unsaved_attachments ||= []
158 160 obj.unsaved_attachments << a
159 161 else
160 162 attached << a
161 163 end
162 164 end
163 165 end
164 166 {:files => attached, :unsaved => obj.unsaved_attachments}
165 167 end
166 168
167 169 private
168 170 def sanitize_filename(value)
169 171 # get only the filename, not the whole path
170 172 just_filename = value.gsub(/^.*(\\|\/)/, '')
171 173 # NOTE: File.basename doesn't work right with Windows paths on Unix
172 174 # INCORRECT: just_filename = File.basename(value.gsub('\\\\', '/'))
173 175
174 176 # Finally, replace all non alphanumeric, hyphens or periods with underscore
175 177 @filename = just_filename.gsub(/[^\w\.\-]/,'_')
176 178 end
177 179
178 180 # Returns an ASCII or hashed filename
179 181 def self.disk_filename(filename)
180 182 timestamp = DateTime.now.strftime("%y%m%d%H%M%S")
181 183 ascii = ''
182 184 if filename =~ %r{^[a-zA-Z0-9_\.\-]*$}
183 185 ascii = filename
184 186 else
185 187 ascii = Digest::MD5.hexdigest(filename)
186 188 # keep the extension if any
187 189 ascii << $1 if filename =~ %r{(\.[a-zA-Z0-9]+)$}
188 190 end
189 191 while File.exist?(File.join(@@storage_path, "#{timestamp}_#{ascii}"))
190 192 timestamp.succ!
191 193 end
192 194 "#{timestamp}_#{ascii}"
193 195 end
194 196 end
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