instance method
field_id
Ruby on Rails 7.2.3
Since v7.0.10Signature
field_id(method, *suffixes, namespace: @options[:namespace], index: @options[:index])Generate an HTML id attribute value for the given field
Return the value generated by the FormBuilder for the given attribute name.
<%= form_with model: @article do |f| %>
<%= f.label :title %>
<%= f.text_field :title, aria: { describedby: f.field_id(:title, :error) } %>
<%= tag.span("is blank", id: f.field_id(:title, :error) %>
<% end %>In the example above, the <input type="text"> element built by the call to #text_field declares an aria-describedby attribute referencing the <span> element, sharing a common id root (article_title, in this case).
Parameters
-
methodreq -
suffixesrest -
namespacekey = @options[:namespace] -
indexkey = @options[:index]
Source
# File actionview/lib/action_view/helpers/form_helper.rb, line 1774
def field_id(method, *suffixes, namespace: @options[:namespace], index: @options[:index])
@template.field_id(@object_name, method, *suffixes, namespace: namespace, index: index)
end
Defined in actionview/lib/action_view/helpers/form_helper.rb line 1774
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Defined in ActionView::Helpers::FormBuilder