ruby-on-rails - 在模型中调用特定的 gem 助手

Question

我需要在项目中使用imgix-rails gem。

我需要在模型中调用一个助手，这个助手：

require "imgix"
require "imgix/rails/tag"
require "imgix/rails/image_tag"
require "imgix/rails/picture_tag"

module Imgix
  module Rails
    module ViewHelper
      include UrlHelper

      def ix_image_tag(source=nil, path, tag_options: {}, url_params: {}, srcset_options: {})
        return Imgix::Rails::ImageTag.new(path, source: source, tag_options: tag_options, url_params: url_params, srcset_options: srcset_options).render
      end

      def ix_picture_tag(source=nil, path, tag_options: {}, url_params: {}, breakpoints: {}, srcset_options: {})
        return Imgix::Rails::PictureTag.new(path, source: source, tag_options: tag_options, url_params: url_params, breakpoints: breakpoints, srcset_options: srcset_options).render
      end
    end
  end
end

我找不到打电话的方法ix_image_tag。