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Mojolicious-3.40
River stage four • 987 direct dependents • 1105 total dependents
/ Mojolicious::Plugin::TagHelpers

NAME

Mojolicious::Plugin::TagHelpers - Tag helpers plugin

SYNOPSIS

# Mojolicious
$self->plugin('TagHelpers');

# Mojolicious::Lite
plugin 'TagHelpers';

DESCRIPTION

Mojolicious::Plugin::TagHelpers is a collection of HTML tag helpers for Mojolicious.

Most form helpers can automatically pick up previous input values and will show them as default. You can also use "param" in Mojolicious::Plugin::DefaultHelpers to set them manually and let necessary attributes always be generated automatically.

% param country => 'germany' unless param 'country';
<%= radio_button country => 'germany' %> Germany
<%= radio_button country => 'france'  %> France
<%= radio_button country => 'uk'      %> UK

This is a core plugin, that means it is always enabled and its code a good example for learning how to build new plugins, you're welcome to fork it.

HELPERS

Mojolicious::Plugin::TagHelpers implements the following helpers.

base_tag

%= base_tag

Generate portable base tag refering to the current base URL.

<base href="http://localhost/cgi-bin/myapp.pl" />

check_box

%= check_box employed => 1
%= check_box employed => 1, id => 'foo'

Generate checkbox input element. Previous input values will automatically get picked up and shown as default.

<input name="employed" type="checkbox" value="1" />
<input id="foo" name="employed" type="checkbox" value="1" />

file_field

%= file_field 'avatar'
%= file_field 'avatar', id => 'foo'

Generate file input element.

<input name="avatar" type="file" />
<input id="foo" name="avatar" type="file" />

form_for

%= form_for login => (method => 'POST') => begin
  %= text_field 'first_name'
  %= submit_button
% end
%= form_for login => {foo => 'bar'} => (method => 'POST') => begin
  %= text_field 'first_name'
  %= submit_button
% end
%= form_for '/login' => (method => 'POST') => begin
  %= text_field 'first_name'
  %= submit_button
% end
%= form_for 'http://kraih.com/login' => (method => 'POST') => begin
  %= text_field 'first_name'
  %= submit_button
% end

Generate portable form for route, path or URL. For routes that allow POST but not GET, a method attribute will be automatically added.

<form action="/path/to/login" method="POST">
  <input name="first_name" />
  <input value="Ok" type="submit" />
</form>
<form action="/path/to/login/bar" method="POST">
  <input name="first_name" />
  <input value="Ok" type="submit" />
</form>
<form action="/login" method="POST">
  <input name="first_name" />
  <input value="Ok" type="submit" />
</form>
<form action="http://kraih.com/login" method="POST">
  <input name="first_name" />
  <input value="Ok" type="submit" />
</form>

hidden_field

%= hidden_field foo => 'bar'
%= hidden_field foo => 'bar', id => 'bar'

Generate hidden input element.

<input name="foo" type="hidden" value="bar" />
<input id="bar" name="foo" type="hidden" value="bar" />

image

%= image '/images/foo.png'
%= image '/images/foo.png', alt => 'Foo'

Generate image tag.

<img src="/images/foo.png" />
<img alt="Foo" src="/images/foo.png" />

input_tag

%= input_tag 'first_name'
%= input_tag first_name => 'Default name'
%= input_tag 'employed', type => 'checkbox'

Generate form input element. Previous input values will automatically get picked up and shown as default.

<input name="first_name" />
<input name="first_name" value="Default name" />
<input name="employed" type="checkbox" />

javascript

%= javascript '/script.js'
%= javascript begin
  var a = 'b';
% end

Generate portable script tag for Javascript asset.

<script src="/script.js" type="text/javascript" />
<script type="text/javascript"><![CDATA[
  var a = 'b';
]]></script>
%= link_to Home => 'index'
%= link_to index => {foo => 'bar'} => (class => 'links') => begin
  Home
% end
<%= link_to index => begin %>Home<% end %>
<%= link_to '/path/to/file' => begin %>File<% end %>
<%= link_to 'http://mojolicio.us' => begin %>Mojolicious<% end %>
<%= link_to url_for->query(foo => 'bar')->to_abs => begin %>Retry<% end %>

Generate portable link to route, path or URL, defaults to using the capitalized link target as content.

<a href="/path/to/index">Home</a>
<a class="links" href="/path/to/index/bar">Home</a>
<a href="/path/to/index">Home</a>
<a href="/path/to/file">File</a>
<a href="http://mojolicio.us">Mojolicious</a>
<a href="http://127.0.0.1:3000/current/path?foo=bar">Retry</a>

password_field

%= password_field 'pass'
%= password_field 'pass', id => 'foo'

Generate password input element.

<input name="pass" type="password" />
<input id="foo" name="pass" type="password" />

radio_button

%= radio_button country => 'germany'
%= radio_button country => 'germany', id => 'foo'

Generate radio input element. Previous input values will automatically get picked up and shown as default.

<input name="country" type="radio" value="germany" />
<input id="foo" name="country" type="radio" value="germany" />

select_field

%= select_field language => [qw(de en)]
%= select_field language => [qw(de en)], id => 'lang'
%= select_field country => [[Germany => 'de'], 'en']
%= select_field country => [{Europe => [[Germany => 'de'], 'en']}]
%= select_field country => [[Germany => 'de', class => 'europe'], 'en']

Generate select, option and optgroup elements. Previous input values will automatically get picked up and shown as default.

<select name="language">
  <option value="de">de</option>
  <option value="en">en</option>
</select>
<select id="lang" name="language">
  <option value="de">de</option>
  <option value="en">en</option>
</select>
<select name="country">
  <option value="de">Germany</option>
  <option value="en">en</option>
</select>
<select id="lang" name="language">
  <optgroup label="Europe">
    <option value="de">Germany</option>
    <option value="en">en</option>
  </optgroup>
</select>
<select name="country">
  <option class="europe" value="de">Germany</option>
  <option value="en">en</option>
</select>

stylesheet

%= stylesheet '/foo.css'
%= stylesheet begin
  body {color: #000}
% end

Generate portable style or link tag for CSS asset.

<link href="/foo.css" media="screen" rel="stylesheet" type="text/css" />
<style type="text/css"><![CDATA[
  body {color: #000}
]]></style>

submit_button

%= submit_button
%= submit_button 'Ok!', id => 'foo'

Generate submit input element.

<input type="submit" value="Ok" />
<input id="foo" type="submit" value="Ok!" />

t

%=t div => 'some & content'

Alias for tag.

<div>some &amp; content</div>

tag

%= tag 'div'
%= tag 'div', id => 'foo'
%= tag div => 'some & content'
<%= tag div => begin %>some & content<% end %>

HTML tag generator.

<div />
<div id="foo" />
<div>some &amp; content</div>
<div>some & content</div>

Very useful for reuse in more specific tag helpers.

$self->tag('div');
$self->tag('div', id => 'foo');
$self->tag(div => sub { 'Content' });

Results are automatically wrapped in Mojo::ByteStream objects to prevent accidental double escaping.

text_field

%= text_field 'first_name'
%= text_field first_name => 'Default name'
%= text_field first_name => 'Default name', class => 'user'

Generate text input element. Previous input values will automatically get picked up and shown as default.

<input name="first_name" type="text" />
<input name="first_name" type="text" value="Default name" />
<input class="user" name="first_name" type="text" value="Default name" />

text_area

%= text_area 'foo'
%= text_area foo => 'Default!', cols => 40
%= text_area foo => begin
  Default!
% end

Generate textarea element. Previous input values will automatically get picked up and shown as default.

<textarea name="foo"></textarea>
<textarea cols="40" name="foo">Default!</textarea>
<textarea name="foo">
  Default!
</textarea>

METHODS

Mojolicious::Plugin::TagHelpers inherits all methods from Mojolicious::Plugin and implements the following new ones.

register

$plugin->register(Mojolicious->new);

Register helpers in Mojolicious application.

SEE ALSO

Mojolicious, Mojolicious::Guides, http://mojolicio.us.