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

For fields that failed validation with "validation" in Mojolicious::Controller the field-with-error class will be automatically added through "tag_with_error", to make styling with CSS easier.

  <input class="field-with-error" name="age" type="text" value="250">

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.

See "PLUGINS" in Mojolicious::Plugins for a list of plugins that are available by default.

HELPERS

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

check_box

  %= check_box employed => 1
  %= check_box employed => 1, disabled => 'disabled'

Generate input tag of type checkbox. Previous input values will automatically get picked up and shown as default.

  <input name="employed" type="checkbox" value="1">
  <input disabled="disabled" name="employed" type="checkbox" value="1">

color_field

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

Generate input tag of type color. 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">

csrf_field

  %= csrf_field

Generate input tag of type hidden with "csrf_token" in Mojolicious::Plugin::DefaultHelpers.

  <input name="csrf_token" type="hidden" value="fa6a08...">

date_field

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

Generate input tag of type date. 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 input tag of type datetime. 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 input tag of type email. 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 input tag of type file.

  <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' => (enctype => 'multipart/form-data') => begin
    %= text_field 'first_name', disabled => 'disabled'
    %= submit_button
  % end
  %= form_for 'http://example.com/login' => (method => 'POST') => begin
    %= text_field 'first_name'
    %= submit_button
  % end

Generate portable form tag with "url_for" in Mojolicious::Controller. For routes that allow POST but not GET, a method attribute will be automatically added.

  <form action="/path/to/login">
    <input name="first_name" type="text">
    <input value="Ok" type="submit">
  </form>
  <form action="/path/to/login.txt" method="POST">
    <input name="first_name" type="text">
    <input value="Ok" type="submit">
  </form>
  <form action="/path/to/login" enctype="multipart/form-data">
    <input disabled="disabled" name="first_name" type="text">
    <input value="Ok" type="submit">
  </form>
  <form action="http://example.com/login" method="POST">
    <input name="first_name" type="text">
    <input value="Ok" type="submit">
  </form>

hidden_field

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

Generate input tag of type hidden.

  <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 input tag. 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>
  <script><![CDATA[
    var a = 'b';
  ]]></script>

label_for

  %= label_for first_name => 'First name'
  %= label_for first_name => 'First name', class => 'user'
  %= label_for first_name => begin
    First name
  % end
  %= label_for first_name => (class => 'user') => begin
    First name
  % end

Generate label tag.

  <label for="first_name">First name</label>
  <label class="user" for="first_name">First name</label>
  <label for="first_name">
    First name
  </label>
  <label class="user" for="first_name">
    First name
  </label>

link_to

  %= link_to Home => 'index'
  %= link_to Home => 'index' => {format => 'txt'} => (class => 'menu')
  %= link_to index => {format => 'txt'} => (class => 'menu') => 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 a tag with "url_for" in Mojolicious::Controller, defaults to using the capitalized link target as content.

  <a href="/path/to/index">Home</a>
  <a class="menu" href="/path/to/index.txt">Home</a>
  <a class="menu" 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 input tag of type month. 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 input tag of type number. 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 input tag of type password.

  <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 input tag of type radio. 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 input tag of type range. 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 input tag of type search. 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 country => [qw(de en)]
  %= select_field country => [[Germany => 'de'], 'en'], id => 'eu'
  %= select_field country => [[Germany => 'de', disabled => 'disabled'], 'en']
  %= select_field country => [c(EU => [[Germany => 'de'], 'en'], id => 'eu')]
  %= select_field country => [c(EU => [qw(de en)]), c(Asia => [qw(cn jp)])]

Generate select and option tags from array references and optgroup tags from Mojo::Collection objects. Previous input values will automatically get picked up and shown as default.

  <select name="country">
    <option value="de">de</option>
    <option value="en">en</option>
  </select>
  <select id="eu" name="country">
    <option value="de">Germany</option>
    <option value="en">en</option>
  </select>
  <select name="country">
    <option disabled="disabled" value="de">Germany</option>
    <option value="en">en</option>
  </select>
  <select name="country">
    <optgroup id="eu" label="EU">
      <option value="de">Germany</option>
      <option value="en">en</option>
    </optgroup>
  </select>
  <select name="country">
    <optgroup label="EU">
      <option value="de">de</option>
      <option value="en">en</option>
    </optgroup>
    <optgroup label="Asia">
      <option value="cn">cn</option>
      <option value="jp">jp</option>
    </optgroup>
  </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" rel="stylesheet">
  <style><![CDATA[
    body {color: #000}
  ]]></style>

submit_button

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

Generate input tag of type submit.

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

t

  %=t div => 'test & 123'

Alias for "tag".

  <div>test &amp; 123</div>

tag

  %= tag 'br'
  %= tag 'div'
  %= tag 'div', id => 'foo', hidden => undef
  %= tag div => 'test & 123'
  %= tag div => (id => 'foo') => 'test & 123'
  %= tag div => (data => {my_id => 1, Name => 'test'}) => 'test & 123'
  %= tag div => begin
    test & 123
  % end
  <%= tag div => (id => 'foo') => begin %>test & 123<% end %>

HTML tag generator, the data attribute may contain a hash reference with key/value pairs to generate attributes from.

  <br>
  <div></div>
  <div id="foo" hidden></div>
  <div>test &amp; 123</div>
  <div id="foo">test &amp; 123</div>
  <div data-my-id="1" data-name="test">test &amp; 123</div>
  <div>
    test & 123
  </div>
  <div id="foo">test & 123</div>

Very useful for reuse in more specific tag helpers.

  my $output = $c->tag('meta');
  my $output = $c->tag('meta', charset => 'UTF-8');
  my $output = $c->tag(div => '<p>This will be escaped</p>');
  my $output = $c->tag(div => sub { '<p>This will not be escaped</p>' });

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

tag_with_error

  %= tag_with_error 'input', class => 'foo'

Same as "tag", but adds the class field-with-error.

  <input class="foo field-with-error">

tel_field

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

Generate input tag of type tel. 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 tag. 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 input tag of type text. 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 input tag of type time. 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 input tag of type url. 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 input tag of type week. 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);