method

id

v7.1.3.2 - Show latest stable - 0 notes - Class: ActionView::Helpers::FormBuilder

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What's this?

id() public

Generate an HTML id attribute value.

return the <form> element’s id attribute.

<%= form_for @post do |f| %>
  <%# ... %>

  <% content_for :sticky_footer do %>
    <%= form.button(form: f.id) %>
  <% end %>
<% end %>

In the example above, the :sticky_footer content area will exist outside of the <form> element. By declaring the form HTML attribute, we hint to the browser that the generated <button> element should be treated as the <form> element’s submit button, regardless of where it exists in the DOM.

Show source

# File actionview/lib/action_view/helpers/form_helper.rb, line 1752
      def id
        options.dig(:html, :id) || options[:id]
      end

id

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