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Posted by Gaudeon on March 5, 2008, 1:36 pm
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A refined focus of what Catalyst::View::CSV was to be apart of. Note:
Catalyst::View::CSV will move forward, it is instead a part of this
package as Catalyst::View::Download::CSV. Also note, I intend to add
more downloadable formats besides the simple ones (CSV, Plain) I have
listed.
- Travis
=head1 NAME
Catalyst::View::Download
=head1 VERSION
Version 0.01
=head1 SYNOPSIS
# lib/MyApp/View/Download.pm
package MyApp::View::Download;
use base qw( Catalyst::View::Download );
1;
# lib/MyApp/Controller/SomeController.pm
sub example_action_1 : Local {
my ($self, $c) = @_;
my $content_type = $c->request->params-> ||
'plain'; # 'plain' or 'csv'
$c->header('Content-Type' => 'text/'.$content_type); # Set the
content type so Catalyst::View::Download can determine how to process
it.
# Array reference of array references.
my $data = [
['col 1','col 2','col ...','col N'], # row 1
['col 1','col 2','col ...','col N'], # row 2
['col 1','col 2','col ...','col N'], # row ...
['col 1','col 2','col ...','col N'] # row N
];
# If the chosen content_type is 'csv' then the render function
of Catalyst::View::Download::CSV will be called which uses the 'csv'
stash key
$c->stash-> = $data;
# For plain text in this example we just dump the example
array
# Catalyst::View::Download::Plain will use either the 'plain'
stash key or just pull from $c->response->body
use Data::Dumper;
$c->response->body( Dumper( $data ) )
# Finally forward processing to the Download View
$c->forward('MyApp::View::Download');
}
=head1 SUBROUTINES
=head2 process
This method will be called by Catalyst if it is asked to forward to a
component without a specified action.
=head2 render
Allows others to use this view for much more fine-grained content
generation.
=head1 CONFIG
=over 4
=item default
Determines which Content-Type to use by default. Default: 'text/plain'
$c->view('MyApp::View::Download')->config('default' => 'text/
plain');
=item content_type
A hash ref of hash refs. Each key in content_type is Content-Type that
is handled by this view.
$c->view('MyApp::View::Download')->config->{'text/
csv'} = {
'outfile' => 'somefile.csv',
'module' => 'My::Module'
};
The Content-Type key refers to it's own hash of parameters to
determine the actions thie view should take for that Content-Type.
'outfile' - The name and extenstion of the file that will display by
default in the download dialog box.
'module' - The name of the module that will handle data output. If
there is a plus symbol '+' at the beginning of the module name, this
will indicate that the module is a Catalyst::View module will will add
'Catalyst::View::' to the beginning of the module name.
$c->view('MyApp::View::Download')->config->{'text/
csv'} = '+Download::CSV'; # Module Loaded:
Catalyst::View::Download::CSV
$c->view('MyApp::View::Download')->config->{'text/
csv'} = 'My::Module::CSV'; # Module Loaded: My::Module::CSV
=back
=head1 Content-Type Module Requirements
Any module set as 'the' module for a certain Content-Type needs to
have a subroutine named 'render' that returns the content to output
with the following parameters handled.
=over 4
=item $c
The catalyst $c variable
=item $template
In case a template file is needed for the module. This view will pass
$c->stash-> as this value.
=item $args
A list of arguments the module will use to process the data into
content. This view will pass $c->stash as this value.
=back
=head1 CURRENT CONTENT-TYPES SUPPORTED
=head2 text/csv
Catalyst::View::Download has the following default configuration for
this Content-Type
$c->view('MyApp::View::Download')->config->{'text/
csv'} = {
'outfile' => 'data.csv',
'module' => '+Download::CSV'
};
See L<Catalyst::View::Download::CSV> for more details.
=head2 text/plain
Catalyst::View::Download has the following default configuration for
this Content-Type
$c->view('MyApp::View::Download')->config-> = 'text/
plain';
$c->view('MyApp::View::Download')->config->{'text/
csv'} = {
'outfile' => 'data.csv',
'module' => '+Download::CSV'
};
See L<Catalyst::View::Download::Plain> for more details.
=head1 AUTHOR
Travis Chase, C<< <gaudeon at cpan.org> >>
=head1 BUGS
Please report any bugs or feature requests to C<bug-catalyst-view-
download at rt.cpan.org>, or through
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?
Queue=Catalyst-View-Download>. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Catalyst::View::Download
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Catalyst-View-Download>
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Catalyst-View-Download>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Catalyst-View-Download>
=item * Search CPAN
L<http://search.cpan.org/dist/Catalyst-View-Download>
=back
=head1 SEE ALSO
L<Catalyst> L<Catalyst::View>
=head1 CONTRIBUTORS
=head1 ACKNOWLEDGEMENTS
Thanks to following people for their constructive comments and help:
=over 4
=item J. Shirley
=item Jonathan Rockway
=back
Thanks also to my company Ti4 Technologies for their financial
support. L<http://www.ti4tech.com/>
=head1 COPYRIGHT & LICENSE
Copyright 2008 Travis Chase, all rights reserved.
This program is free software; you can redistribute it and/or modify
it
under the same terms as Perl itself.
=cut
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