Method: ActionView::Helpers::FormBuilder#initialize

Defined in:
actionview/lib/action_view/helpers/form_helper.rb

#initialize(object_name, object, template, options) ⇒ FormBuilder

Returns a new instance of FormBuilder.



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# File 'actionview/lib/action_view/helpers/form_helper.rb', line 1720

def initialize(object_name, object, template, options)
  @nested_child_index = {}
  @object_name, @object, @template, @options = object_name, object, template, options
  @default_options = @options ? @options.slice(:index, :namespace, :skip_default_ids, :allow_method_names_outside_object) : {}
  @default_html_options = @default_options.except(:skip_default_ids, :allow_method_names_outside_object)

  convert_to_legacy_options(@options)

  if @object_name&.end_with?("[]")
    if (object ||= @template.instance_variable_get("@#{@object_name[0..-3]}")) && object.respond_to?(:to_param)
      @auto_index = object.to_param
    else
      raise ArgumentError, "object[] naming but object param and @object var don't exist or don't respond to to_param: #{object.inspect}"
    end
  end

  @multipart = nil
  @index = options[:index] || options[:child_index]
end