1Text::Haml(3pm) User Contributed Perl Documentation Text::Haml(3pm)
2
6 Text::Haml - Haml Perl implementation
7
9 use Text::Haml;
10 my $haml = Text::Haml->new;
12 my $html = $haml->render('%p foo'); # <p>foo</p>
14 $html = $haml->render('= $user', user => 'friend'); # <div>friend</div>
16 # Use Haml file
18 $html = $haml->render_file('tmpl/index.haml', user => 'friend');
19
21 Text::Haml implements Haml
22 <http://haml.info/docs/yardoc/file.REFERENCE.html> specification.
23 Text::Haml passes specification tests written by Norman Clarke
25 https://github.com/haml/haml-spec and supports only cross-language Haml
26 features. Do not expect ruby or Rails specific extensions to work.
27
29 Text::Haml implements the following attributes:
30 "append"
32 Holds the string of code that is appended to the generated Perl code.
33 "code"
35 Holds the Perl code.
36 "compiled"
38 Holds compiled code.
39 "encoding"
41 $haml->encoding('utf-8');
42 Default is utf-8.
44 "escape"
46 Escape subroutine presented as string.
47 Default is
49 $haml->escape(<<'EOF');
51 my $s = shift;
52 return unless defined $s;
53 $s =~ s/&/&/g;
54 $s =~ s/</</g;
55 $s =~ s/>/>/g;
56 $s =~ s/"/"/g;
57 $s =~ s/'/'/g;
58 return $s;
59 EOF
60 "escape_html"
62 $haml->escape_html(0);
63 Switch on/off Haml output html escaping. Default is on.
65 "filters"
67 Holds filters.
68 "format"
70 $haml->format('xhtml');
71 Supported formats: xhtml, html, html5.
73 Default is xhtml.
75 "namespace"
77 Holds the namespace under which the Perl package is generated.
78 "prepend"
80 Holds the string of code that is prepended to the generated Perl code.
81 "vars"
83 Holds the variables that are passed during the rendering.
84 "vars_as_subs"
86 When options is NOT SET (by default) passed variables are normal Perl
87 variables and are used with "$" prefix.
88 $haml->render('%p $var', var => 'hello');
90 When this option is SET passed variables are Perl lvalue subroutines
92 and are used without "$" prefix.
93 $haml->render('%p var', var => 'hello');
95 But if you declare Perl variable in a block, it must be used with "$"
97 prefix.
98 $haml->render('<<EOF')
100 - my $foo;
101 %p= $foo
102 EOF
103 "helpers"
105 helpers => {
106 foo => sub {
107 my $self = shift;
108 my $string = shift;
109 $string =~ s/r/z/;
111 return $string;
113 }
114 }
115 Holds helpers subroutines. Helpers can be called in Haml text as normal
117 Perl functions. See also add_helper.
118 "helpers_arg"
120 $haml->helpers_args($my_context);
121 First argument passed to the helper (Text::Haml instance by default).
123 "error"
125 $haml->error;
126 Holds the last error.
128 "tape"
130 Holds parsed haml elements.
131 "path"
133 Holds path of Haml templates. Current directory is a default. If you
134 want to set several paths, arrayref can also be set up. This way is
135 the same as Text::Xslate.
136 "cache"
138 Holds cache level of Haml templates. 1 is a default. 0 means "Not
139 cached", 1 means "Checked template mtime" and 2 means "Used always
140 cached". This way is the same as Text::Xslate.
141 "cache_dir"
143 Holds cache directory of Haml templates. $ENV{HOME}/.text_haml_cache is
144 a default. Unless $ENV{HOME}, File::Spec->tempdir was used. This way
145 is the same as Text::Xslate.
146
148 "new"
149 my $haml = Text::Haml->new;
150 "add_helper"
152 $haml->add_helper(current_time => sub { time });
153 Adds a new helper.
155 "add_filter"
157 $haml->add_filter(compress => sub { $_[0] =~ s/\s+/ /g; $_[0]});
158 Adds a new filter.
160 "build"
162 $haml->build(@_);
163 Builds the Perl code.
165 "compile"
167 $haml->compile;
168 Compiles parsed code.
170 "interpret"
172 $haml->interpret(@_);
173 Interprets compiled code.
175 "parse"
177 $haml->parse('%p foo');
178 Parses Haml string building a tree.
180 "render"
182 my $text = $haml->render('%p foo');
183 my $text = $haml->render('%p var', var => 'hello');
185 Renders Haml string. Returns undef on error. See error attribute.
187 "render_file"
189 my $text = $haml->render_file('foo.haml', var => 'hello');
190 A helper method that loads a file and passes it to the render method.
192 Since "%____vars" is used internally, you cannot use this as parameter
193 name.
194
196 String interpolation
197 Despite of existing string interpolation in Perl, Ruby interpolation is
198 also supported.
199 $haml->render('%p Hello #{user}', user => 'foo')
201 Hash keys
203 When declaring tag attributes ":" symbol can be used.
204 $haml->render("%a{:href => 'bar'}");
206 Perl-style is supported but not recommented, since your Haml template
208 won't work with Ruby Haml implementation parser.
209 $haml->render("%a{href => 'bar'}");
211 Using with Data::Section::Simple
213 When using the Data::Section::Simple, you need to unset the variable
214 "encoding" in the constructor or using the "encoding" attribute of the
215 Text::Haml:
216 use Data::Section::Simple qw/get_data_section/;
218 my $vpath = get_data_section;
219 my $haml = Text::Haml->new(cache => 0, path => $vpath, encoding => '');
221 # or
222 #my $haml = Text::Haml->new(cache => 0, path => $vpath);
223 #$haml->encoding(''); # encoding attribute
224 my $index = $haml->render_file('index.haml');
226 say $index;
227 __DATA__
229 @@ index.haml
231 %strong XXXXX
232 see <https://metacpan.org/pod/Data::Section::Simple#utf8-pragma>
234
236 Repository
237 http://github.com/vti/text-haml
238
240 Viacheslav Tykhanovskyi, "vti@cpan.org".
241
243 In order of appearance:
244 Nick Ragouzis
246 Norman Clarke
248 rightgo09
250 Breno G. de Oliveira (garu)
252 Yuya Tanaka
254 Wanradt Koell (wanradt)
256 Keedi Kim
258 Carlos Lima
260 Jason Younker
262 TheAthlete
264 Mark Aufflick (aufflick)
266 Graham Todd (grtodd)
268
270 Copyright (C) 2009-2017, Viacheslav Tykhanovskyi.
271 This program is free software, you can redistribute it and/or modify it
273 under the terms of the Artistic License version 2.0.
274perl v5.32.0 2020-07-28 Text::Haml(3pm)