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1 | package DBIx::Class::InflateColumn::File; |
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2 | |
3 | use strict; |
4 | use warnings; |
5 | use base 'DBIx::Class'; |
6 | use File::Path; |
7 | use File::Copy; |
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8 | use Path::Class; |
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9 | |
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10 | __PACKAGE__->load_components(qw/InflateColumn/); |
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11 | |
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12 | sub register_column { |
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13 | my ($self, $column, $info, @rest) = @_; |
14 | $self->next::method($column, $info, @rest); |
15 | return unless defined($info->{is_file_column}); |
16 | |
17 | $self->inflate_column($column => { |
18 | inflate => sub { |
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19 | my ($value, $obj) = @_; |
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20 | $obj->_inflate_file_column($column, $value); |
21 | }, |
22 | deflate => sub { |
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23 | my ($value, $obj) = @_; |
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24 | $obj->_save_file_column($column, $value); |
25 | }, |
26 | }); |
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27 | } |
28 | |
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29 | sub _file_column_file { |
30 | my ($self, $column, $filename) = @_; |
31 | |
32 | my $column_info = $self->column_info($column); |
33 | |
34 | return unless $column_info->{is_file_column}; |
35 | |
36 | my $id = $self->id || $self->throw_exception( |
37 | 'id required for filename generation' |
38 | ); |
39 | |
40 | $filename ||= $self->$column->{filename}; |
41 | return Path::Class::file( |
42 | $column_info->{file_column_path}, $id, $filename, |
43 | ); |
44 | } |
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45 | |
46 | sub delete { |
47 | my ( $self, @rest ) = @_; |
48 | |
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49 | for ( $self->columns ) { |
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50 | if ( $self->column_info($_)->{is_file_column} ) { |
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51 | rmtree( [$self->_file_column_file($_)->dir], 0, 0 ); |
52 | last; # if we've deleted one, we've deleted them all |
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53 | } |
54 | } |
55 | |
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56 | return $self->next::method(@rest); |
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57 | } |
58 | |
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59 | sub insert { |
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60 | my $self = shift; |
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61 | |
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62 | # cache our file columns so we can write them to the fs |
63 | # -after- we have a PK |
64 | my %file_column; |
65 | for ( $self->columns ) { |
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66 | if ( $self->column_info($_)->{is_file_column} ) { |
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67 | $file_column{$_} = $self->$_; |
68 | $self->store_column($_ => $self->$_->{filename}); |
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69 | } |
70 | } |
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71 | |
72 | $self->next::method(@_); |
73 | |
74 | # write the files to the fs |
75 | while ( my ($col, $file) = each %file_column ) { |
76 | $self->_save_file_column($col, $file); |
77 | } |
78 | |
79 | return $self; |
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80 | } |
81 | |
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82 | |
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83 | sub _inflate_file_column { |
84 | my ( $self, $column, $value ) = @_; |
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85 | |
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86 | my $fs_file = $self->_file_column_file($column, $value); |
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87 | |
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88 | return { handle => $fs_file->open('r'), filename => $value }; |
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89 | } |
90 | |
91 | sub _save_file_column { |
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92 | my ( $self, $column, $value ) = @_; |
93 | |
94 | return unless ref $value; |
95 | |
96 | my $fs_file = $self->_file_column_file($column, $value->{filename}); |
97 | mkpath [$fs_file->dir]; |
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98 | |
99 | # File::Copy doesn't like Path::Class (or any for that matter) objects, |
100 | # thus ->stringify (http://rt.perl.org/rt3/Public/Bug/Display.html?id=59650) |
101 | File::Copy::copy($value->{handle}, $fs_file->stringify); |
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102 | |
103 | $self->_file_column_callback($value, $self, $column); |
104 | |
105 | return $value->{filename}; |
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106 | } |
107 | |
108 | =head1 NAME |
109 | |
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110 | DBIx::Class::InflateColumn::File - DEPRECATED (superseded by DBIx::Class::InflateColumn::FS) |
111 | |
112 | =head2 Deprecation Notice |
113 | |
114 | This component has a number of architectural deficiencies and is not |
115 | recommended for further use. It will be retained for backwards |
116 | compatibility, but no new functionality patches will be accepted. |
117 | Please consider using the much more mature and actively supported |
118 | DBIx::Class::InflateColumn::FS |
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119 | |
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120 | =head1 SYNOPSIS |
121 | |
122 | In your L<DBIx::Class> table class: |
123 | |
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124 | use base 'DBIx::Class::Core'; |
125 | |
126 | __PACKAGE__->load_components(qw/InflateColumn::File/); |
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127 | |
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128 | # define your columns |
129 | __PACKAGE__->add_columns( |
130 | "id", |
131 | { |
132 | data_type => "integer", |
133 | is_auto_increment => 1, |
134 | is_nullable => 0, |
135 | size => 4, |
136 | }, |
137 | "filename", |
138 | { |
139 | data_type => "varchar", |
140 | is_file_column => 1, |
141 | file_column_path =>'/tmp/uploaded_files', |
142 | # or for a Catalyst application |
143 | # file_column_path => MyApp->path_to('root','static','files'), |
144 | default_value => undef, |
145 | is_nullable => 1, |
146 | size => 255, |
147 | }, |
148 | ); |
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149 | |
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150 | |
151 | In your L<Catalyst::Controller> class: |
152 | |
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153 | FileColumn requires a hash that contains L<IO::File> as handle and the file's |
154 | name as name. |
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155 | |
156 | my $entry = $c->model('MyAppDB::Articles')->create({ |
157 | subject => 'blah', |
158 | filename => { |
159 | handle => $c->req->upload('myupload')->fh, |
160 | filename => $c->req->upload('myupload')->basename |
161 | }, |
162 | body => '....' |
163 | }); |
164 | $c->stash->{entry}=$entry; |
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165 | |
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166 | |
167 | And Place the following in your TT template |
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168 | |
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169 | Article Subject: [% entry.subject %] |
170 | Uploaded File: |
171 | <a href="/static/files/[% entry.id %]/[% entry.filename.filename %]">File</a> |
172 | Body: [% entry.body %] |
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173 | |
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174 | The file will be stored on the filesystem for later retrieval. Calling delete |
175 | on your resultset will delete the file from the filesystem. Retrevial of the |
176 | record automatically inflates the column back to the set hash with the |
177 | IO::File handle and filename. |
178 | |
179 | =head1 DESCRIPTION |
180 | |
181 | InflateColumn::File |
182 | |
183 | =head1 METHODS |
184 | |
185 | =head2 _file_column_callback ($file,$ret,$target) |
186 | |
187 | method made to be overridden for callback purposes. |
188 | |
189 | =cut |
190 | |
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191 | sub _file_column_callback {} |
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192 | |
193 | =head1 AUTHOR |
194 | |
195 | Victor Igumnov |
196 | |
197 | =head1 LICENSE |
198 | |
199 | This library is free software, you can redistribute it and/or modify |
200 | it under the same terms as Perl itself. |
201 | |
202 | =cut |
203 | |
204 | 1; |