Module ActionView::Helpers::TagHelper
In: lib/action_view/helpers/tag_helper.rb

Use these methods to generate HTML tags programmatically when you can‘t use a Builder. By default, they output XHTML compliant tags.

Methods

Included Modules

ERB::Util

Public Instance methods

Returns a CDATA section with the given content. CDATA sections are used to escape blocks of text containing characters which would otherwise be recognized as markup. CDATA sections begin with the string <![CDATA[ and end with (and may not contain) the string ]]>.

  cdata_section("<hello world>")
   # => <![CDATA[<hello world>]]>

Returns an HTML block tag of type name surrounding the content. Add HTML attributes by passing an attributes hash to options. For attributes with no value like (disabled and readonly), give it a value of true in the options hash. You can use symbols or strings for the attribute names.

  content_tag(:p, "Hello world!")
   # => <p>Hello world!</p>
  content_tag(:div, content_tag(:p, "Hello world!"), :class => "strong")
   # => <div class="strong"><p>Hello world!</p></div>
  content_tag("select", options, :multiple => true)
   # => <select multiple="multiple">...options...</select>

Instead of passing the content as an argument, you can also use a block in which case, you pass your options as the second parameter.

  <% content_tag :div, :class => "strong" do -%>
    Hello world!
  <% end -%>
   # => <div class="strong"><p>Hello world!</p></div>

Returns the escaped html without affecting existing escaped entities.

  escape_once("1 > 2 &amp; 3")
   # => "1 &lt; 2 &amp; 3"

Returns an empty HTML tag of type name which by default is XHTML compliant. Setting open to true will create an open tag compatible with HTML 4.0 and below. Add HTML attributes by passing an attributes hash to options. For attributes with no value like (disabled and readonly), give it a value of true in the options hash. You can use symbols or strings for the attribute names.

  tag("br")
   # => <br />
  tag("br", nil, true)
   # => <br>
  tag("input", { :type => 'text', :disabled => true })
   # => <input type="text" disabled="disabled" />

[Validate]