Abhijit Menon-Sen > Mojolicious-4.26 > Mojolicious::Plugin::TagHelpers

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Source   Latest Release: Mojolicious-5.44

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.

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" />

color_field

  %= color_field 'background'
  %= color_field background => '#ffffff'
  %= color_field background => '#ffffff', id => 'foo'

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

  <input name="background" type="color" />
  <input name="background" type="color" value="#ffffff" />
  <input id="foo" name="background" type="color" value="#ffffff" />

date_field

  %= date_field 'end'
  %= date_field end => '2012-12-21'
  %= date_field end => '2012-12-21', id => 'foo'

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

  <input name="end" type="date" />
  <input name="end" type="date" value="2012-12-21" />
  <input id="foo" name="end" type="date" value="2012-12-21" />

datetime_field

  %= datetime_field 'end'
  %= datetime_field end => '2012-12-21T23:59:59Z'
  %= datetime_field end => '2012-12-21T23:59:59Z', id => 'foo'

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

  <input name="end" type="datetime" />
  <input name="end" type="datetime" value="2012-12-21T23:59:59Z" />
  <input id="foo" name="end" type="datetime" value="2012-12-21T23:59:59Z" />

email_field

  %= email_field 'notify'
  %= email_field notify => 'nospam@example.com'
  %= email_field notify => 'nospam@example.com', id => 'foo'

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

  <input name="notify" type="email" />
  <input name="notify" type="email" value="nospam@example.com" />
  <input id="foo" name="notify" type="email" value="nospam@example.com" />

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 => begin
    %= text_field 'first_name'
    %= submit_button
  % end
  %= form_for login => {format => 'txt'} => (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://example.com/login' => (method => 'POST') => begin
    %= text_field 'first_name'
    %= submit_button
  % end

Generate portable form tag 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">
    <input name="first_name" />
    <input value="Ok" type="submit" />
  </form>
  <form action="/path/to/login.txt" method="POST">
    <input name="first_name" />
    <input value="Ok" type="submit" />
  </form>
  <form action="/path/to/login" method="POST">
    <input name="first_name" />
    <input value="Ok" type="submit" />
  </form>
  <form action="http://example.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 portable img tag.

  <img src="/path/to/images/foo.png" />
  <img alt="Foo" src="/path/to/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="/path/to/script.js" />
  <script><![CDATA[
    var a = 'b';
  ]]></script>

link_to

  %= link_to Home => 'index'
  %= link_to Home => 'index' => {format => 'txt'} => (class => 'links')
  %= link_to index => {format => 'txt'} => (class => 'links') => begin
    Home
  % end
  %= link_to Contact => 'mailto:sri@example.com'
  <%= link_to index => begin %>Home<% end %>
  <%= link_to '/file.txt' => 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.txt">Home</a>
  <a class="links" href="/path/to/index.txt">
    Home
  </a>
  <a href="mailto:sri@example.com">Contact</a>
  <a href="/path/to/index">Home</a>
  <a href="/path/to/file.txt">File</a>
  <a href="http://mojolicio.us">Mojolicious</a>
  <a href="http://127.0.0.1:3000/current/path?foo=bar">Retry</a>

month_field

  %= month_field 'vacation'
  %= month_field vacation => '2012-12'
  %= month_field vacation => '2012-12', id => 'foo'

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

  <input name="vacation" type="month" />
  <input name="vacation" type="month" value="2012-12" />
  <input id="foo" name="vacation" type="month" value="2012-12" />

number_field

  %= number_field 'age'
  %= number_field age => 25
  %= number_field age => 25, id => 'foo', min => 0, max => 200

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

  <input name="age" type="number" />
  <input name="age" type="number" value="25" />
  <input id="foo" max="200" min="0" name="age" type="number" value="25" />

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" />

range_field

  %= range_field 'age'
  %= range_field age => 25
  %= range_field age => 25, id => 'foo', min => 0, max => 200

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

  <input name="age" type="range" />
  <input name="age" type="range" value="25" />
  <input id="foo" max="200" min="200" name="age" type="range" value="25" />

search_field

  %= search_field 'q'
  %= search_field q => 'perl'
  %= search_field q => 'perl', id => 'foo'

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

  <input name="q" type="search" />
  <input name="q" type="search" value="perl" />
  <input id="foo" name="q" type="search" value="perl" />

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="/path/to/foo.css" media="screen" rel="stylesheet" />
  <style><![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.

tel_field

  %= tel_field 'work'
  %= tel_field work => '123456789'
  %= tel_field work => '123456789', id => 'foo'

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

  <input name="work" type="tel" />
  <input name="work" type="tel" value="123456789" />
  <input id="foo" name="work" type="tel" value="123456789" />

text_area

  %= text_area 'foo'
  %= text_area 'foo', cols => 40
  %= text_area foo => 'Default!', cols => 40
  %= text_area foo => (cols => 40) => 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"></textarea>
  <textarea cols="40" name="foo">Default!</textarea>
  <textarea cols="40" name="foo">
    Default!
  </textarea>

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" />

time_field

  %= time_field 'start'
  %= time_field start => '23:59:59'
  %= time_field start => '23:59:59', id => 'foo'

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

  <input name="start" type="time" />
  <input name="start" type="time" value="23:59:59" />
  <input id="foo" name="start" type="time" value="23:59:59" />

url_field

  %= url_field 'address'
  %= url_field address => 'http://mojolicio.us'
  %= url_field address => 'http://mojolicio.us', id => 'foo'

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

  <input name="address" type="url" />
  <input name="address" type="url" value="http://mojolicio.us" />
  <input id="foo" name="address" type="url" value="http://mojolicio.us" />

week_field

  %= week_field 'vacation'
  %= week_field vacation => '2012-W17'
  %= week_field vacation => '2012-W17', id => 'foo'

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

  <input name="vacation" type="week" />
  <input name="vacation" type="week" value="2012-W17" />
  <input id="foo" name="vacation" type="week" value="2012-W17" />

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.

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