Mojo::Template(3) User Contributed Perl Documentation Mojo::Template(3)NAMEMojo::Template - Perl-ish Templates!
SYNOPSIS
use Mojo::Template;
my $mt = Mojo::Template->new;
# Simple
my $output = $mt->render(<<'EOF');
<!doctype html><html>
<head><title>Simple</title></head>
<body>Time: <%= localtime(time) %></body>
</html>
EOF
print $output;
# More complicated
my $output = $mt->render(<<'EOF', 23, 'foo bar');
%= 5 * 5
% my ($number, $text) = @_;
test 123
foo <% my $i = $number + 2; %>
% for (1 .. 23) {
* some text <%= $i++ %>
% }
EOF
print $output;
DESCRIPTIONMojo::Template is a minimalistic and very Perl-ish template engine,
designed specifically for all those small tasks that come up during big
projects. Like preprocessing a config file, generating text from
heredocs and stuff like that.
<% Perl code %>
<%= Perl expression, replaced with result %>
<%== Perl expression, replaced with XML escaped result %>
<%# Comment, useful for debugging %>
<%% Replaced with "<%", useful for generating templates %>
% Perl code line, treated as "<% line =%>"
%= Perl expression line, treated as "<%= line %>"
%== Perl expression line, treated as "<%== line %>"
%# Comment line, treated as "<%# line =%>"
%% Replaced with "%", useful for generating templates
Automatic Escaping
Escaping behavior can be reversed with the "auto_escape" attribute,
this is the default in Mojolicious ".ep" templates for example.
<%= Perl expression, replaced with XML escaped result %>
<%== Perl expression, replaced with result %>
Mojo::ByteStream objects are always excluded from automatic escaping.
<%= b('<div>excluded!</div>') %>
Trimming
Whitespace characters around tags can be trimmed with a special tag
ending.
<%= All whitespace characters around this expression will be trimmed =%>
Blocks
You can capture whole template blocks for reuse later with the "begin"
and "end" keywords.
<% my $block = begin %>
<% my $name = shift; =%>
Hello <%= $name %>.
<% end %>
<%= $block->('Baerbel') %>
<%= $block->('Wolfgang') %>
Indentation
Perl lines can also be indented freely.
% my $block = begin
% my $name = shift;
Hello <%= $name %>.
% end
%= $block->('Baerbel')
%= $block->('Wolfgang')
Arguments
Mojo::Template templates work just like Perl subs (actually they get
compiled to a Perl sub internally). That means you can access
arguments simply via @_.
% my ($foo, $bar) = @_;
% my $x = shift;
test 123 <%= $foo %>
More Escaping
You can use escaped tags and lines to generate templates.
%% my $number = <%= 20 + 3 %>;
The number is <%%= $number %>
A newline can be escaped with a backslash.
This is <%= 23 * 3 %> a\
single line
And a backslash in front of a newline can be escaped with another
backslash.
% use Data::Dumper;
This will\\
result <%= Dumper {foo => 'bar'} %>\\
in multiple lines
Exceptions
Templates get compiled to Perl code internally, this can make debugging
a bit tricky. But Mojo::Template will return Mojo::Exception objects
that stringify to error messages with context.
Bareword "xx" not allowed while "strict subs" in use at template line 4.
2: </head>
3: <body>
4: % my $i = 2; xx
5: %= $i * 2
6: </body>
Caching
Mojo::Template does not support caching by itself, but you can easily
build a wrapper around it.
# Compile and store code somewhere
my $mt = Mojo::Template->new;
$mt->parse($template);
$mt->build;
my $code = $mt->code;
# Load code and template (template for debug trace only)
$mt->template($template);
$mt->code($code);
$mt->compile;
my $output = $mt->interpret(@arguments);
ATTRIBUTESMojo::Template implements the following attributes.
"auto_escape"
my $auto_escape = $mt->auto_escape;
$mt = $mt->auto_escape(1);
Activate automatic XML escaping.
"append"
my $code = $mt->append;
$mt = $mt->append('warn "Processed template"');
Append Perl code to compiled template.
"capture_end"
my $capture_end = $mt->capture_end;
$mt = $mt->capture_end('end');
Keyword indicating the end of a capture block, defaults to "end".
<% my $block = begin %>
Some data!
<% end %>
"capture_start"
my $capture_start = $mt->capture_start;
$mt = $mt->capture_start('begin');
Keyword indicating the start of a capture block, defaults to "begin".
<% my $block = begin %>
Some data!
<% end %>
"code"
my $code = $mt->code;
$mt = $mt->code($code);
Compiled template code.
"comment_mark"
my $comment_mark = $mt->comment_mark;
$mt = $mt->comment_mark('#');
Character indicating the start of a comment, defaults to "#".
<%# This is a comment %>
"encoding"
my $encoding = $mt->encoding;
$mt = $mt->encoding('UTF-8');
Encoding used for template files.
"escape_mark"
my $escape_mark = $mt->escape_mark;
$mt = $mt->escape_mark('=');
Character indicating the start of an escaped expression, defaults to
"=".
<%== $foo %>
"expression_mark"
my $expression_mark = $mt->expression_mark;
$mt = $mt->expression_mark('=');
Character indicating the start of an expression, defaults to "=".
<%= $foo %>
"line_start"
my $line_start = $mt->line_start;
$mt = $mt->line_start('%');
Character indicating the start of a code line, defaults to "%".
% $foo = 23;
"name"
my $name = $mt->name;
$mt = $mt->name('foo.mt');
Name of template currently being processed, defaults to "template".
Note that this method is attribute and might change without warning!
"namespace"
my $namespace = $mt->namespace;
$mt = $mt->namespace('main');
Namespace used to compile templates, defaults to
"Mojo::Template::SandBox".
"prepend"
my $code = $mt->prepend;
$mt = $mt->prepend('my $self = shift;');
Prepend Perl code to compiled template.
"replace_mark"
my $replace_mark = $mt->replace_mark;
$mt = $mt->replace_mark('%');
Character used for escaping the start of a tag or line, defaults to
"%".
<%% my $foo = 23; %>
"tag_start"
my $tag_start = $mt->tag_start;
$mt = $mt->tag_start('<%');
Characters indicating the start of a tag, defaults to "<%".
<% $foo = 23; %>
"tag_end"
my $tag_end = $mt->tag_end;
$mt = $mt->tag_end('%>');
Characters indicating the end of a tag, defaults to "%>".
<%= $foo %>
"template"
my $template = $mt->template;
$mt = $mt->template($template);
Raw template.
"tree"
my $tree = $mt->tree;
$mt = $mt->tree($tree);
Parsed tree.
"trim_mark"
my $trim_mark = $mt->trim_mark;
$mt = $mt->trim_mark('-');
Character activating automatic whitespace trimming, defaults to "=".
<%= $foo =%>
METHODSMojo::Template inherits all methods from Mojo::Base and implements the
following new ones.
"new"
my $mt = Mojo::Template->new;
Construct a new Mojo::Template object.
"build"
$mt = $mt->build;
Build template.
"compile"
my $exception = $mt->compile;
Compile template.
"interpret"
my $output = $mt->interpret;
my $output = $mt->interpret(@arguments);
Interpret template.
"parse"
$mt = $mt->parse($template);
Parse template.
"render"
my $output = $mt->render($template);
my $output = $mt->render($template, @arguments);
Render template.
"render_file"
my $output = $mt->render_file($template_file);
my $output = $mt->render_file($template_file, @arguments);
Render template file.
"render_file_to_file"
my $exception = $mt->render_file_to_file($template_file, $output_file);
my $exception = $mt->render_file_to_file(
$template_file, $output_file, @arguments
);
Render template file to a specific file.
"render_to_file"
my $exception = $mt->render_to_file($template, $output_file);
my $exception = $mt->render_to_file(
$template, $output_file, @arguments
);
Render template to a specific file.
SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>.
perl v5.14.1 2011-09-07 Mojo::Template(3)
