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1 | package CatalystX::HelpText::ViewRole; |
2 | use Moose::Role; |
3 | use Try::Tiny; |
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4 | use Moose::Autobox; |
5 | use namespace::autoclean; |
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6 | |
7 | requires 'expose_methods'; |
8 | |
9 | around expose_methods => sub { |
10 | my ($orig, $self, @args) = @_; |
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11 | my $m = $self->$orig(@args) || []; |
12 | [ $m->flatten, 'help_text' ]; |
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13 | }; |
14 | |
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15 | has helptext_model => ( |
16 | is => 'ro', |
17 | default => 'Help', |
18 | ); |
19 | |
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20 | sub help_text { |
21 | my ($self, $c, $key) = @_; |
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22 | my $model = try { $c->model($self->helptext_model) }; |
23 | if (!$model) { |
24 | $c->log->warn(sprintf("Cannot find the '%s' model for %s", $self->helptext_model, ref($self))) if $c->debug; |
25 | return; |
26 | } |
27 | if (!$model->can('get_help_text_for')) { |
28 | $c->log->warn(sprintf("Your '%s' model used by '%s' does not have a get_help_text_for method", $self->helptext_model, ref($self))) if $c->debug; |
29 | return; |
30 | } |
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31 | try { |
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32 | $model->get_help_text_for($key); |
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33 | } |
34 | catch { |
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35 | $c->log->warn("Error retrieving help_text key '$key' from model: $_") |
36 | if $c->debug; |
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37 | return ''; |
38 | }; |
39 | } |
40 | |
41 | 1; |
42 | |
43 | =head1 NAME |
44 | |
45 | CatalystX::HelpText::ViewRole - Role to be applied to Views |
46 | |
47 | =head1 SYNOPSIS |
48 | |
49 | package MyApp::View::HTML; |
50 | use Moose; |
51 | |
52 | extends 'Catalyst::View::TT'; |
53 | with 'CatalystX::HelpText::ViewRole'; |
54 | |
55 | ... then, in your template code ... |
56 | |
57 | [% helptext('SomeHelpTopic') %] |
58 | |
59 | =cut |
60 | |