试图将其发布到Rails API端点，并希望将图像对象发布到actionText字段。这是我尝试过的：

require 'rest_client'
require 'base64'
image_data = Base64.encode64(File.open("lastsnap.jpg","rb").read)
  url = "http://localhost:3000/apiv1/sensors"
  data = { sensor: { image: { content_type: "image/jpeg",filename: "lastsnap.jpg",payload: image_data}}}
  header = {content_type: "json",accept: "json"}
  RestClient.post( url,data,header)

调用此脚本并发布到端点会导致以下错误：

Unpermitted parameter: :image
   (0.1ms)  begin transaction
  ↳ app/controllers/apiv1/sensors_controller.rb:27:in `create'
  Sensor Create (1.2ms)  INSERT INTO "sensors" ("created_at","updated_at") VALUES (?,?)  [["created_at","2019-11-08 23:15:09.698765"],["updated_at","2019-11-08 23:15:09.698765"]]
  ↳ app/controllers/apiv1/sensors_controller.rb:27:in `create'
   (1.0ms)  commit transaction
  ↳ app/controllers/apiv1/sensors_controller.rb:27:in `create'
Completed 200 OK in 9ms (activeRecord: 2.3ms | Allocations: 2346)

所以如果我们需要以这种格式发布：

@message.image.attach(params[:images])

根据我们的模型

has_many_attached :images

和我们的控制器

params.require(:message).permit(:title,:content,images: []

我应该如何构造POST API调用？自创建对象以来，我传递的json似乎没有在对象上击中属性。

感谢您的帮助