strip_tags

  • This function’s solution will only work within the context of the Rails framework.

    Rails has a series of helpers to help sanitize output. These are all in ActionView’s ActionView::Helpers::SanitizeHelper module. We can strip tags from text in Rails using the sanitize method which takes a list of optional tags or attributes as a whitelist.

    PHP

    $content = "<strong>Test</strong> some <em>tags<em>";
$result = strip_tags($content, '<em>');
var_export($result);
// => 'Test some <em>tags<em>'

    Rails

    # in app/views/posts/index.html.erb
<% @text = "<strong>Test</strong> some <em>tags<em>" %>
<%= sanitize(@text, :tags => %w(em), :attributes => %w(style)) %>
# => "Test some <em>tags<em>"

    Rails also has helpers to sanitize_css, strip_tags, strip_links

    see also

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