Rails Carrierwave Unpermitted 参数

Question

这很简单，至少应该是简单的假冒我！ 我正在尝试向用户添加上传多张照片，但每次都达到 Unpermitted 参数

所以用户是一个带有设计的简单用户模型，照片模型属于用户

我只想用carrierwave上传多张照片到照片模型。

但是每次出现这个 Unpermitted 参数图像时，你可以看到图像参数是允许的，所以我不知道为什么 rails 仍然抱怨这个参数 那么有人可以澄清一下吗？

Started POST "/photos" for ::1 at 2021-09-25 19:28:15 -0300
Processing by PhotosController#create as HTML
  Parameters: {"authenticity_token"=>"[FILTERED]", "photo"=>{"image"=>[#<ActionDispatch::Http::UploadedFile:0x00007facf81dc278 @tempfile=#<Tempfile:/tmp/RackMultipart20210925-7943-117n8yk.jpg>, @original_filename="3.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"photo[image][]\"; filename=\"3.jpg\"\r\nContent-Type: image/jpeg\r\n">]}, "commit"=>"Criar Photo"}
Unpermitted parameter: :image
  User Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? ORDER BY "users"."id" ASC LIMIT ?  [["id", 2], ["LIMIT", 1]]
  ↳ app/controllers/photos_controller.rb:19:in `create'

这是代码！

class Photo < ApplicationRecord
  belongs_to :user
  mount_uploader :image, ImageUploader
end

class PhotosController < ApplicationController
  before_action :authenticate_user!, only: %i[new create edit update destroy]
  before_action :set_photo, only: %i[show edit update destroy]


  def index
    @photos = current_user.photos
  end


  def new
    #@photo = current_user.photos.build
    @photo = Photo.new
  end

  def create

    @photo = Photo.new(photo_params)
    @photo.user_id = current_user.id

    respond_to do |format |
      if @photo.save


        format.html {
          redirect_to photos_path, notice: "asset was successfully created."
        }

      else
        format.html {
          render :new,
          status: unprocessable_entity
        }

      end
    end

  end

  private

  def set_photo
    @photo = Photo.friendly.find(params[:id])
  end


  def photo_params
    params.require(:photo).permit(:image,:user_id,:id,)

  end

  def pagy_get_vars(collection, vars) {
      count: collection.count,
      page: params['page'],
      items: vars[:items] || 25
    }
  end
end

Answer 1

Strong 参数只接受标量类型（字符串、符号、NilClass 等...）。

您传递了一个数组类型 (Parameters: {"authenticity_token"=>"[FILTERED]", "photo"=>{"image"=>[#<...)，因此将许可参数更改为 array of scalar。

def photo_params
  params.require(:photo).permit(:image => [],:user_id,:id,)
end