better helper example to demonstrate the use of state variables

mojolicious · Dec 11, 2012 · d25f32d · d25f32d
1 parent c031d93
commit d25f32d
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Showing 2 changed files with 8 additions and 3 deletions.
diff --git a/lib/Mojolicious.pm b/lib/Mojolicious.pm
@@ -417,13 +417,15 @@ Add a new helper that will be available as a method of the controller object
 and the application object, as well as a function in C<ep> templates.
 
   # Helper
-  $app->helper(add => sub { $_[1] + $_[2] });
+  $app->helper(cache => sub { state $cache = {} });
 
   # Controller/Application
-  my $result = $self->add(2, 3);
+  $self->cache->{foo} = 'bar';
+  my $result = $self->cache->{foo};
 
   # Template
-  %= add 2, 3
+  % cache->{foo} = 'bar';
+  %= cache->{foo}
 
 =head2 C<hook>
 

diff --git a/t/mojolicious/lite_app.t b/t/mojolicious/lite_app.t
@@ -27,9 +27,12 @@ app->defaults(default => 23);
 # Test helpers
 helper test_helper  => sub { shift->param(@_) };
 helper test_helper2 => sub { shift->app->controller_class };
+helper test_helper3 => sub { state $cache = {} };
 helper dead         => sub { die $_[1] || 'works!' };
 is app->test_helper('foo'), undef, 'no value yet';
 is app->test_helper2, 'Mojolicious::Controller', 'right value';
+app->test_helper3->{foo} = 'bar';
+is app->test_helper3->{foo}, 'bar', 'right result';
 
 # Test renderer
 app->renderer->add_handler(dead => sub { die 'renderer works!' });