refile simple_form undefined methods attachment_field

Question

我正在尝试将refile连接到我的视图，我收到以下错误：

以下是我的模特：

class Job < ActiveRecord::Base
  acts_as_paranoid

  acts_as_taggable
  acts_as_taggable_on :languages

  belongs_to :company
  belongs_to :category

  validates :title,
            :location,
            :category,
            :language_list,
            :short_description,
            :description,
            :application_process,
            presence: true
end

class Company < ActiveRecord::Base
  acts_as_paranoid
  has_many :jobs

  attachment :company_logo, type: :image

  validates :name, :url, :email, presence: true
end

simple_form视图（忽略binding.pry）

= render layout: 'header' do
  = simple_form_for(@job) do |j|
    div[class='panel-heading']
      h3[class='panel-title']
        |Position Details
    div[class='panel-body']
      = j.input :title
      = j.input :location
      = j.association :category, as: :radio_buttons
      = j.input :language_list, as: :check_boxes, collection: @tags
      = j.input :short_description
      = j.input :description, input_html: { class: 'textarea-height wysihtml5' }
      = j.input :application_process
    div[class='panel-heading']
      h3[class='panel-title']
        |Company Details
    div[class='panel-body']
      = j.simple_fields_for :company do |jc|
        = jc.input :name

        = binding.pry

        = jc.input :company_logo, as: :attachment
        = jc.input :url
        = jc.input :email
    div[class='panel-heading panel-heading-info']
      h3[class='panel-title']
        |Would you like your job posting featured?
    div[class='panel-body']
      p
        |Featured posted are promoted with additional design elements to grab the
          job seeker's attention.  This additional marketing capability can be purchased
          for an additonal $#{AppConfig.product['settings']['job_base_featured_price']}.

      = j.input :is_featured

      = j.button :button, type: 'button', class: 'btn-primary' do
        = job_posting_button_step_label
        =>
        i[class='fa fa-arrow-circle-right']

虽然我一直在解析文档，但我似乎无法弄清楚为什么attachment_field未定义。

另外，我有一个初始化程序refile.rb设置如下：

require 'refile/rails'
require 'refile/simple_form'

我想知道文档是否搞砸了或者simple_form部分是否被搞砸了，因为如果我将其切换为：

= jc.input :company_logo, as: :file, direct: true, presigned: true

Answer 1

经过长时间的战斗，我就是如何找到解决这种情况的方法。首先，我发现这篇SO Styling file upload button for simple_form_for with Bootstrap in Rails 3帖子让我尝试https://github.com/jasny/bootstrap/。 Jasny有一些甜蜜的文件上传者，但所有的宝石都已过时了。 [注意，我希望通过补丁来解决这个问题，因为我本周有时间]所以我将Jasny文件下载到供应商javascripts和stylesheets文件夹中，如下所示：

我还使用https://rails-assets.org/在我的gemfile中输入holder.js：

source 'https://rails-assets.org' do
  gem 'rails-assets-holderjs'
end

接下来，我使用以下内容更新了我的application.js文件：

//= require refile
//= require holderjs
//= require jasny-bootstrap

接下来，我需要在我的sass设置中使用样式：

// External Libraries Built For Bootstrap in Vendor
@import 'awesome-bootstrap-checkbox';
@import 'jasny-bootstrap';

这为我提供了以简单形式修改文件上传器的工具：

= j.simple_fields_for :company do |jc|
  = jc.input :name
  div
    label
      = t('simple_form.labels.company.logo')
  div[class="form-group fileinput fileinput-new" data-provides="fileinput"]
    div[class="fileinput-new thumbnail" style="width: 200px; height: 200px;"]
      img[data-src="holder.js/200x200" alt="..."]
    div[class="fileinput-preview fileinput-exists thumbnail" style="max-width: 200px; max-height: 200px;"]
    div
      span[class="btn btn-default btn-file"]
        span[class="fileinput-new"]
          |Select image
        span[class="fileinput-exists"]
          |Change
        = jc.input_field :logo, direct: true, presigned: true
      a[href="#" class="btn btn-default fileinput-exists" data-dismiss="fileinput"]
        |Remove
    p[class="help-block"]
      = t('simple_form.hints.company.logo')      
  = jc.input :url
  = jc.input :email

这导致了漂亮的上传者！

我想将此重构为部分，但我会等到我有另一个文件上传表单来解决这个问题。另外，如果您查看上面的代码，我遵循simple_form使用的语言环境约定。不漂亮，但它的工作原理。