Recipes for templates
Duncan Ferguson edited this page Apr 25, 2017
·
3 revisions
Variables of all kinds can be easily accessed from templates. It's good design to pass the data from your application to the stash and access it from the templating system.
Here is a small code snippet about passing variables to the stash.
#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => sub {
my $self = shift;
$self->stash(
name => 'Peter'
);
} => 'index';
app->start;
__DATA__
@@ index.html.ep
% layout 'default';
Hello <%= $name %>
@@ layouts/default.html.ep
<!doctype html><html>
<head><title>Scalar exercise</title></head>
<body><%== content %></body>
</html>#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => sub {
my $self = shift;
$self->stash(
names => ['Peter', 'Georg', 'Fabian']
);
} => 'index';
app->start;
__DATA__
@@ index.html.ep
% layout 'default';
<p>Hello <%= $names->[0] %></p>
<p>List of array members:
<ul>
% foreach my $person (@$names) {
<li><%= $person %></li>
% }
</ul>
</p>
@@ layouts/default.html.ep
<!doctype html><html>
<head><title>Array exercise</title></head>
<body><%== content %></body>
</html>Now to some more advanced stuff. Passing a hashref is a useful thing as this might be the result of a database query from one of the DBI modules. See selectall_hashref for more information on how to do it.
#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => sub {
my $self = shift;
my $services = {
'rabenfedern.de' => {
'admin' => 'rhaen',
'desc' => 'webserver'
},
'pkgbox.org' => {
'admin' => 'hazel',
'desc' => 'mailserver'
}
};
$self->stash(
services => $services
);
} => 'index';
app->start;
__DATA__
@@ index.html.ep
% layout 'default';
<p>Welcome to hashrefs</p>
<p>
<ul>
% foreach my $domain (keys %{$services}) {
<li><%= $domain %></li>
<ul>
<li>Admin: <%= $services->{$domain}->{admin} %></li>
</ul>
<p>That's a server for: <%= $services->{$domain}->{desc} %></p>
% }
</ul>
</p>
@@ layouts/default.html.ep
<!doctype html><html>
<head><title>Default</title></head>
<body><%== content %></body>
</html>The following code snippet completes the template code demo session. Voila, working with arrayref inside the stash.
#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => sub {
my $self = shift;
my $ref_pets = [
['isolde', 'cat'],
['oscar', 'dog']
];
$self->stash(
ref_pets => $ref_pets
);
} => 'index';
app->start;
__DATA__
@@ index.html.ep
% layout 'default';
<p>Welcome to arrayrefs</p>
<p>
<ul>
% for my $loop ( @{$ref_pets} ) {
<li>Name of the pet: <%= $loop->[0] %>, it's a <%= $loop->[1] %></li>
% }
</ul>
</p>
@@ layouts/default.html.ep
<!doctype html><html>
<head><title>Default</title></head>
<body><%== content %></body>
</html>