method
fields_for_with_nested_attributes
v6.0.0 -
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Class: ActionView::Helpers::FormBuilder
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fields_for_with_nested_attributes(association_name, association, options, block)
private
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# File actionview/lib/action_view/helpers/form_helper.rb, line 2513 def fields_for_with_nested_attributes(association_name, association, options, block) name = "#{object_name}[#{association_name}_attributes]" association = convert_to_model(association) if association.respond_to?(:persisted?) association = [association] if @object.send(association_name).respond_to?(:to_ary) elsif !association.respond_to?(:to_ary) association = @object.send(association_name) end if association.respond_to?(:to_ary) explicit_child_index = options[:child_index] output = ActiveSupport::SafeBuffer.new association.each do |child| if explicit_child_index options[:child_index] = explicit_child_index.call if explicit_child_index.respond_to?(:call) else options[:child_index] = nested_child_index(name) end output << fields_for_nested_model("#{name}[#{options[:child_index]}]", child, options, block) end output elsif association fields_for_nested_model(name, association, options, block) end end