编辑：

Question

我无法使用Rails 5 API和carrierwave-base64将图像保存到数据库中。我已经阅读了堆栈和文档，无法找到解决方案。我将图像作为base64字符串从angular传递给Rails API。图像肯定是编码的，因为我从终端的角度和轨道获得控制台日志。图像将保存为字符串，位于“媒体表中的图像”列中。

但是，当我点击“保存”时，rails会返回404，并显示消息：

ActiveRecord :: RecordNotFound（找不到'id'= =的媒体）：

任何帮助都会非常感激，因为我完全难过。提前致谢。代码：

image_uploader.rb：

class ImageUploader < CarrierWave::Uploader::Base
  storage :file
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  def extension_whitelist
    %w(jpg jpeg gif png)
  end
end

media_controller.rb

class MediaController < ApplicationController
before_action :set_medium, only: [:show, :create, :update, :destroy]
# skip_before_action :authenticate_user!

# GET /media
def index
  @media = Medium.all

  render json: @media
end

# GET /media/1
def show
  render json: @medium
end

# POST /media
def create

# @medium = Medium.new(Uploader.upload(medium_params))
  if @medium.save


    render json: @medium, status: :created, location: @medium
  else
    render json: @medium.errors, status: :unprocessable_entity
  end
end

# PATCH/PUT /media/1
def update
if @medium.update(medium_params)
  render json: @medium
else
  render json: @medium.errors, status: :unprocessable_entity
end
end

# DELETE /media/1
def destroy
  @medium.destroy
end

private
# Use callbacks to share common setup or constraints between actions.
def set_medium
  @medium = Medium.find(params[:id])
end

# Only allow a trusted parameter "white list" through.
def medium_params
  params.require(:medium).permit(:title, :body, :image)
end
end

模型/ medium.rb：

class Medium < ApplicationRecord

 has_and_belongs_to_many :projects, class_name: "Project", join_table: 
 "media_projects"
 has_and_belongs_to_many :pages, class_name: "Page", join_table: 
 "media_pages"
 mount_base64_uploader :image, ImageUploader

end

串行器/ medium_serializer.rb：

class MediumSerializer < ActiveModel::Serializer
  attributes :id, :title, :body, :image
  has_many :projects
  has_many :pages
end

感谢您的帮助！抱歉华夫饼，我是新手，这是我的第一篇文章。

编辑：

我通过从用户模型中的before_action中删除：create然后编辑create函数来修复此问题，如下所示：

def create

uploader = ImageUploader.new


@medium = Medium.new((medium_params))


if @medium.save
  uploader.store!(@medium)

  render json: @medium, status: :created, location: @medium
else
  render json: @medium.errors, status: :unprocessable_entity
end
end

欢呼声

Answer 1

从:create

中删除before_action :set_medium

Rails 5 API图像上传器，带有carrierwave-base 64错误

编辑：

1 个答案: