Rails DirectUploadsController：覆盖#create 方法以添加自定义标头值答案

【问题标题】：Rails DirectUploadsController: override #create method to add custom headers valuesRails DirectUploadsController：覆盖#create 方法以添加自定义标头值
【发布时间】：2020-01-30 15:22:58
【问题描述】：

我想知道是否可以覆盖 DirectUploadsController#create 方法 calls 私有 direct_upload_json 方法：

class ActiveStorage::DirectUploadsController < ActiveStorage::BaseController
  def create
    blob = ActiveStorage::Blob.create_before_direct_upload!(blob_args)
    render json: direct_upload_json(blob)
  end

private
...
def direct_upload_json(blob)
  blob.as_json(root: false, methods: :signed_id).merge(direct_upload: {
    url: blob.service_url_for_direct_upload,
    headers: blob.service_headers_for_direct_upload
  })
end

我需要它为请求标头设置一个Authorization Bearer <token> 以及另一个键/值。任何的想法？谢谢。

【问题讨论】：

标签： ruby-on-rails-5 rails-activestorage

【解决方案1】：

#config/routes.rb

Rails.application.routes.draw do
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
  post '/rails/active_storage/direct_uploads', to: 'image_uploads#create'
end

覆盖您的DirectUploadsController

#app/controllerss/image_uploads_controler.rb  
class ImageUploadsController < ActiveStorage::DirectUploadsController

  def create
    super
  end

  private

  def direct_upload_json(blob)
    headers = blob.service_headers_for_direct_upload
    headers[:custom_header] = "TEST HEADER"
    blob.as_json(root: false, methods: :signed_id).merge(direct_upload: {
      url: blob.service_url_for_direct_upload,
      headers: headers
    })
  end
end

【讨论】：