Question

我正在构建一个论坛应用程序。简而言之，该应用程序允许您询问所有用户都可以访问的主题（没有任何问题）并且所有用户都可以回复帖子文字和与回复相关联的图片。并与回复中的图像关联有任何破损。我使用载波来构建功能。

在终端上，我已经收到了：

    NoMethodError - undefined method `reimage_will_change!' for #
<Reply:0x000055cb9f2abc30>
    Did you mean?  Reimage_will_change!:
      app/controllers/replies_controller.rb:8:in `create'

在终端中，我注意到图像到达了创建行（第55行）。这是此部分：

 Parameters: {"utf8"=>"✓", "reply"=>{"reply"=>"Amazon CEO Jeff Bezos gave this advice to those ", "reimage"=>#<ActionDispatch::Http::UploadedFile:0x000055cb9f58cd78 @tempfile=#<Tempfile:/tmp/RackMultipart20190704-4676-zzj92m.png>, @original_filename="Capture d’écran de 2019-06-10 11-08-07.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"reply[reimage]\"; filename=\"Capture d\xE2\x80\x99\xC3\xA9cran de 2019-06-10 11-08-07.png\"\r\nContent-Type: image/png\r\n">}, "commit"=>"Envoyer", "discussion_id"=>"pourquoi-intel-a-t-il-du-mal-a-suivre-la-loi-de-moore-la-loi-de-moore-est-elle-morte"}
  User Load (1.4ms)  SELECT  "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["id", 1], ["LIMIT", 1]]
  ↳ /home/chatln/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/activerecord-5.2.3/lib/active_record/log_subscriber.rb:98
  Discussion Load (0.9ms)  SELECT  "discussions".* FROM "discussions" WHERE "discussions"."slug" = $1 LIMIT $2  [["slug", "pourquoi-intel-a-t-il-du-mal-a-suivre-la-loi-de-moore-la-loi-de-moore-est-elle-morte"], ["LIMIT", 1]]
  ↳ app/controllers/replies_controller.rb:55
Completed 500 Internal Server Error in 216ms (ActiveRecord: 25.4ms)

控制器回复

 class RepliesController < ApplicationController
  before_action :authenticate_user!
  before_action :set_reply, only: [:edit, :update, :show, :destroy]
  before_action :set_discussion, only: [:create, :edit, :show, :update, :destroy]
  #before_action :find_discussions, only: [:create, :edit, :show, :update, :destroy]

  def create
    @reply = @discussion.replies.create(params[:reply].permit(:reply, :reimage, :discussion_id))
    @reply.user_id = current_user.id

    respond_to do |format|
      if @reply.save
        format.html { redirect_to discussion_path(@discussion) }
        format.js # renders create.js.erb
      else
        format.html { redirect_to discussion_path(@discussion), notice: "Reponse non enregistrée, ressayer encore."}
        format.js
      end
    end
  end

  def new
  end


  def destroy
    @reply = @discussion.replies.find(params[:id])
    @reply.destroy
    redirect_to discussion_path(@discussion)
  end

  def edit
    @discussion = Discussion.find(params[:discussion_id])
    @reply = @discussion.replies.find(params[:id])
  end

  def update
    @reply = @discussion.replies.find(params[:id])
     respond_to do |format|
      if @reply.update(reply_params)
        format.html { redirect_to discussion_path(@discussion), notice: 'Reponse mise a jour...' }
      else
        format.html { render :edit }
        format.json { render json: @reply.errors, status: :unprocessable_entity }
      end
    end
  end

  def show
  end

  private

  def set_discussion
    @discussion = Discussion.friendly.find(params[:discussion_id])
  end


  def set_reply
    @reply = Reply.find(params[:id])
  end

  def reply_params
    params.require(:reply).permit(:reply, :reimage, :discussion_id)
  end
end

回复模型wit mount_uploader 注意：重新成像是图像回复冠军

class Reply < ApplicationRecord
mount_uploader :reimage, ReimageUploader

  belongs_to :discussion
  belongs_to :user
  validates :reply, presence: true

  extend FriendlyId
  friendly_id :reply, use: [:slugged, :finders]

  def should_generate_new_friendly_id?
    reply_changed?
  end

end

如何解决这个已经消耗了4天精力的问题

当我在论坛上提交回复表格时，回复图片无法保存

0 个答案: