instance method
field_name
Ruby on Rails 8.1.2
Since v7.0.10Signature
field_name(method, *methods, multiple: false, index: @options[:index])Generate an HTML name attribute value for the given name and field combination
Return the value generated by the FormBuilder for the given attribute name.
<%= form_with model: @article do |f| %>
<%= f.text_field :title, name: f.field_name(:title, :subtitle) %>
<%# => <input type="text" name="article[title][subtitle]"> %>
<% end %>
<%= form_with model: @article do |f| %>
<%= f.text_field :tag, name: f.field_name(:tag, multiple: true) %>
<%# => <input type="text" name="article[tag][]"> %>
<% end %>Parameters
-
methodreq -
methodsrest -
multiplekey = false -
indexkey = @options[:index]
Source
# File actionview/lib/action_view/helpers/form_helper.rb, line 1797
def field_name(method, *methods, multiple: false, index: @options[:index])
object_name = @options.fetch(:as) { @object_name }
@template.field_name(object_name, method, *methods, index: index, multiple: multiple)
end
Defined in actionview/lib/action_view/helpers/form_helper.rb line 1797
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Defined in ActionView::Helpers::FormBuilder