Dancer::Plugin::FlashMessage(3pm)			User Contributed Perl Documentation			 Dancer::Plugin::FlashMessage(3pm)

NAME

       Dancer::Plugin::FlashMessage - Dancer plugin to display temporary messages, so called "flash messages".

VERSION

       version 0.314

DESCRIPTION

       This plugin helps you display temporary messages, so called "flash messages".  It provides a "flash()" method to define the message. The
       plugin then takes care of attaching the content to the session, propagating it to the templating system, and then removing it from the
       session.

       However, it's up to you to have a place in your views or layout where the message will be displayed. But that's not too hard (see
       SYNOPSYS).

       Basically, the plugin gives you access to the 'flash' hash in your views. It can be used to display flash messages.

       By default, the plugin works using a decent configuration. However, you can change the behaviour of the plugin. See CONFIGURATION

NAME

       Dancer::Plugin::FlashMessage - A plugin to display "flash messages" : short temporary messages

SYNOPSYS

       Example with Template Toolkit

       In your configuration, make sure you have session configured. Of course you can use any session engine :

	 session: "simple"

       In your index.tt view or in your layout :

	 <% IF flash.error %>
	   <div class=error> <% flash.error %> </div>
	 <% END %>

       In your css :

	 .error { background: #CEE5F5; padding: 0.5em;
		  border: 1px solid #AACBE2; }

       In your Dancer App :

	 package MyWebService;

	 use Dancer;
	 use Dancer::Plugin::FlashMessage;

	 get '/hello' => sub {
	     flash error => 'Error message';
	     template 'index';
	 };

METHODS

   flash
	 # sets the flash message for the warning key
	 flash warning => 'some warning message';

	 # retrieves and removes the flash message for the warning key
	 my $warning_message = flash 'warning';

       This method can take 1 or 2 parameters. When called with two parameters, it sets the flash message for the given key.

       When called with one parameter, it returns the value of the flash message of the given key. The message is deleted from the flash hash in
       the session.

       In both cases, "flash" always returns the value;

IN YOUR TEMPLATE

       After having set a flash message using "flash" in your Dancer route, you can access the flash message from within your template. The plugin
       provides you with the "flash" hashref, that you can access in your template, for example like this :

	 <div class=error> <% flash.error %> </div>

       When you use it in your template, the flash message is deleted. So next time, "flash.error" will not exist.

CONFIGURATION

       With no configuration whatsoever, the plugin will work fine, thus contributing to the keep it simple motto of Dancer.

   configuration default values
       These are the default values. See below for a description of the keys

	 plugins:
	   FlashMessage:
	     token_name: flash
	     session_hash_key: _flash

   configuration description
       token_name
	   The name of the template token that will contain the hash of flash messages.  Default : "flash"

       session_hash_key
	   You probably don't need that, but this setting allows you to change the name of the session key used to store the hash of flash
	   messages. It may be useful in the unlikely case where you have key name conflicts in your session. Default : "_flash"

COPYRIGHT

       This software is copyright (c) 2011 by Damien "dams" Krotkine <dams@cpan.org>.

LICENCE

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

AUTHORS

       This module has been written by Damien "dams" Krotkine <dams@cpan.org>.

SEE ALSO

       Dancer

AUTHOR

       Damien "dams" Krotkine

COPYRIGHT AND LICENSE

       This software is copyright (c) 2011 by Damien "dams" Krotkine.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2011-11-26					 Dancer::Plugin::FlashMessage(3pm)