|  line  | 
 stmt  | 
 bran  | 
 cond  | 
 sub  | 
 pod  | 
 time  | 
 code  | 
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 package Dancer::Plugin::FlashNote;  | 
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 {  | 
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   $Dancer::Plugin::FlashNote::VERSION = '1.0.4';  | 
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 # ABSTRACT: support notifications in your Dancer web application  | 
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 use strict;  | 
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 use warnings;  | 
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 use Carp;  | 
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4101
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 use Dancer ':syntax';  | 
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393404
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33678
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 use Dancer::Plugin;  | 
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22453
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    | 
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 my $conf = plugin_setting;  | 
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 my %is_allowed_setting = map { $_ => 1 }  | 
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   qw( token_name session_hash_key queue arguments dequeue );  | 
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 if (my @extra = grep { !$is_allowed_setting{$_} } keys %$conf) {  | 
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20
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    croak __PACKAGE__ . ": invalid configuration keys (@extra)";  | 
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 }  | 
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23
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 my $token_name       = $conf->{token_name}       || 'flash';  | 
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24
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 my $session_hash_key = $conf->{session_hash_key} || '_flash';  | 
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 my $queue            = $conf->{queue}            || 'multiple';  | 
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 my $arguments        = $conf->{arguments}        || 'auto';  | 
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27
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 my $dequeue          = $conf->{dequeue}          || 'when_used';  | 
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29
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 $arguments =~ m{\A(?: single | join | auto | array )\z}mxs  | 
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30
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   or croak "invalid arguments setting '$arguments'";  | 
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31
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32
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 sub _get_parameters {  | 
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33
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42
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100
  
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313
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    if ($arguments eq 'single') { return shift }  | 
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1
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100
  
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3
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100
  
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    | 
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34
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3
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100
  
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22
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    elsif ($arguments eq 'join') { return join $, || '', @_ }  | 
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35
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3
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12
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    elsif ($arguments eq 'array') { return [@_] }  | 
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36
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35
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 50
  
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136
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    return @_ > 1 ? [@_] : shift;  | 
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 } ## end sub _get_parameters  | 
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39
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 if ($queue eq 'single') {  | 
| 
40
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    register flash => sub {  | 
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41
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14
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70018
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       my $value = _get_parameters(@_);  | 
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42
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14
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46
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       session $session_hash_key, $value;  | 
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43
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14
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59
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       return $value;  | 
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44
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    };  | 
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45
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 } ## end if ($queue eq 'single')  | 
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46
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 elsif ($queue eq 'multiple') {  | 
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47
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    register flash => sub {  | 
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48
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28
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28
  
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85501
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       my $value = _get_parameters(@_);  | 
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49
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28
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100
  
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117
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       my $flash = session($session_hash_key) || [];  | 
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50
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28
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6500
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       push @$flash, $value;  | 
| 
51
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8
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27
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       session($session_hash_key, $flash);  | 
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52
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8
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1310
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       return $value;  | 
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53
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    };  | 
| 
54
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 } ## end elsif ($queue eq 'multiple')  | 
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55
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 elsif ($queue eq 'key_single') {  | 
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56
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    register flash => sub {  | 
| 
57
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14
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3706
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       my $key   = shift;  | 
| 
58
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14
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50
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       my $value = _get_parameters(@_);  | 
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59
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14
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100
  
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1230
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       my $flash = session($session_hash_key) || {};  | 
| 
60
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6
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1214
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       $flash->{$key} = $value;  | 
| 
61
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       session($session_hash_key, $flash);  | 
| 
62
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       return $value;  | 
| 
63
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    };  | 
| 
64
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 } ## end elsif ($queue eq 'key_single')  | 
| 
65
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 elsif ($queue eq 'key_multiple') {  | 
| 
66
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    register flash => sub {  | 
| 
67
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       my $key   = shift;  | 
| 
68
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       my $value = _get_parameters(@_);  | 
| 
69
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       my $flash = session($session_hash_key) || {};  | 
| 
70
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       push @{$flash->{$key}}, $value;  | 
| 
71
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       session($session_hash_key, $flash);  | 
| 
72
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       return $value;  | 
| 
73
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    };  | 
| 
74
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 } ## end elsif ($queue eq 'key_multiple')  | 
| 
75
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 else {  | 
| 
76
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    croak "invalid queueing style '$queue'";  | 
| 
77
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 }  | 
| 
78
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    | 
| 
79
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 if ($dequeue eq 'by_key' and $queue !~ m{\Akey_}mxs) {  | 
| 
80
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    croak "dequeuing style 'by_key' only available "  | 
| 
81
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      . "with 'key_*' queueing styles";  | 
| 
82
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 }  | 
| 
83
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 if ($dequeue eq 'always') {  | 
| 
84
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    hook after => sub {  | 
| 
85
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       session $session_hash_key, undef;  | 
| 
86
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    };  | 
| 
87
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 }  | 
| 
88
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 my $template_sub = {  | 
| 
89
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    never => sub {  | 
| 
90
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       shift->{$token_name} = session $session_hash_key;  | 
| 
91
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       return;  | 
| 
92
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    },  | 
| 
93
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    always => sub {  | 
| 
94
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       shift->{$token_name} = session $session_hash_key;  | 
| 
95
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       return;  | 
| 
96
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    },  | 
| 
97
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    when_used => sub {  | 
| 
98
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       my $cache;  | 
| 
99
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       shift->{$token_name} = sub {  | 
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100
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          if (!$cache) {  | 
| 
101
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             $cache = session $session_hash_key;  | 
| 
102
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             session $session_hash_key, undef;  | 
| 
103
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          }  | 
| 
104
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          return $cache;  | 
| 
105
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       };  | 
| 
106
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       return;  | 
| 
107
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    },  | 
| 
108
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    by_key => sub {  | 
| 
109
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       my $flash = session($session_hash_key) || {};  | 
| 
110
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       shift->{$token_name} = {  | 
| 
111
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          map {  | 
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112
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             my $key = $_;  | 
| 
113
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             my $cache;  | 
| 
114
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             $key => sub {  | 
| 
115
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                if (!$cache) {  | 
| 
116
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                   $cache = delete $flash->{$key};  | 
| 
117
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                }  | 
| 
118
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                return $cache;  | 
| 
119
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             };  | 
| 
120
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            } keys %$flash,  | 
| 
121
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       };  | 
| 
122
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    },  | 
| 
123
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   }->{$dequeue}  | 
| 
124
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   or croak "invalid dequeuing style '$dequeue'";  | 
| 
125
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 hook before_template => $template_sub;  | 
| 
126
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    | 
| 
127
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 register flash_flush => sub {  | 
| 
128
 | 
2
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2
  
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 | 
2883
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    my $flash = session $session_hash_key;  | 
| 
129
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2
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 50
  
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344
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    return unless defined $flash;  | 
| 
130
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2
 | 
  
 50
  
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 33
  
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12
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    if ((ref($flash) eq 'HASH') && @_) {  | 
| 
131
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0
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0
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       my @values = map { delete $flash->{$_} } @_;  | 
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0
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0
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    | 
| 
132
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0
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  0
  
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0
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       return unless defined wantarray();  | 
| 
133
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0
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  0
  
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0
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       return $values[0] unless wantarray();  | 
| 
134
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0
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0
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       return @values;  | 
| 
135
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    } ## end if ((ref($flash) eq 'HASH'...  | 
| 
136
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    else {  | 
| 
137
 | 
2
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 | 
5
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       session $session_hash_key, undef;  | 
| 
138
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2
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 | 
283
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       return $flash;  | 
| 
139
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    }  | 
| 
140
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 register_plugin;  | 
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 =pod  | 
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 =head1 NAME  | 
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151
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    | 
| 
152
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 | 
 Dancer::Plugin::FlashNote - support notifications in your Dancer web application  | 
| 
153
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    | 
| 
154
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 | 
 =head1 VERSION  | 
| 
155
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    | 
| 
156
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 | 
 version 1.0.4  | 
| 
157
 | 
 
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    | 
| 
158
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 =head1 SYNOPSIS  | 
| 
159
 | 
 
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    | 
| 
160
 | 
 
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 | 
 
 | 
 
 | 
    # In the configuration you choose a "flash style", e.g.  | 
| 
161
 | 
 
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 | 
 
 | 
    # notifications stored in an array and automatically  | 
| 
162
 | 
 
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 | 
 
 | 
    # removed from the session when used  | 
| 
163
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
    plugins:  | 
| 
164
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
       FlashNote:  | 
| 
165
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
 
 | 
          queue:   multiple  | 
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166
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          dequeue: when_used  | 
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    # In the application you generate flash notifications  | 
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    package MyWebService;  | 
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    use Dancer;  | 
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    use Dancer::Plugin::FlashNote;  | 
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    get '/hello/:id/:who' => sub {  | 
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       flash 'A first error message'  | 
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          unless params->{id} =~ /\A\d+\z/mxs;  | 
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       flash 'A second error message'  | 
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          unless params->{who} =~ /\A(?: you | me )\z/mxs;  | 
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       # ...  | 
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       template 'index';  | 
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    };  | 
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    # Then, in the layout you consume them and they are flushed  | 
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    <% IF flash %>  | 
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       <% FOR notice = flash %>  | 
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          <% notice | html %>  | 
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       <% END %>  | 
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    <% END %>  | 
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 =head1 DESCRIPTION  | 
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 This plugin helps you display temporary messages, so called "flash messages".  | 
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 It provides a C method to define the message. The plugin then takes  | 
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 care of attaching the content to the session, propagating it to the templating  | 
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 system, and then removing it from the session. On the other hand, you still  | 
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 have to take care to find a suitable place to put the messages.  | 
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 =head2 Dancer::Plugin::FlashMessage  | 
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 This plugin originages from L by  | 
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 Damien "dams" Krotkine. While I appreciated the idea and the implementation,  | 
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 I felt that the way of use did not fit my needs and after some discussion  | 
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 we decided to go for different modules: he would retain only the one  | 
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 single behaviour that he thought was the best, and I would implement the  | 
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 different variations. I learned a lot from the discussion, so beware: the  | 
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 Dancer people can teach you a lot!  | 
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 This configuration should give you a behaviour equivalent to  | 
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 L:  | 
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   plugins:  | 
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     FlashNote:  | 
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       queue:     key_single  | 
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       arguments: single  | 
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       dequeue:   by_key  | 
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 but if you need it you can probably stick to L.  | 
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 Also note that with the configuration above the C function will  | 
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 not work in the same way as L when called  | 
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 with only one parameter: in dams' module this kind of call deletes the  | 
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 value associated to the key, in this module this just pushes an undef  | 
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 message.  | 
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    | 
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228
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 =head2 Styles  | 
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229
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    | 
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230
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 | 
 Dancer::Plugin::FlashNote lets you decide the I |