Question

我正在学习轨道，我正在跟随Mattan Griffel的“One Mont Rails”。＆＃39;我花了很多时间寻找这个答案，并尝试了一切，但似乎没有任何工作。我正在使用paperclip gem来上传图片，但上传后，图片不会显示。唯一显示的是缺少的图像图标。请有人帮忙。非常感谢。

这是我的github回购链接：github.com/robertguss/omrails

引脚控制器：pins_controller.rb

class PinsController < ApplicationController
  respond_to :html, :xml, :json
  before_filter :authenticate_user!, except: [:index]
  before_action :set_pin, only: [:show, :edit, :update, :destroy]

  def index
    @pins = Pin.all
    respond_with(@pins)
  end

  def show
    respond_with(@pin)
  end

  def new
    @pin = current_user.pins.new
    respond_with(@pin)
  end

  def edit
    @pin = current_user.pins.find(params[:id])
  end

  def create
    @pin = current_user.pins.new(pin_params)
    @pin.save
    respond_with(@pin)
    flash[:success] = "Pin was created successfully!"
  end

  def update
    @pin = current_user.pins.find(params[:id])
    @pin.update(pin_params)
    respond_with(@pin)
    flash[:success] = "Pin was updated successfully!"
  end

  def destroy
    @pin = current_user.pins.find(params[:id])
    @pin.destroy
    respond_with(@pin)
    flash[:alert] = "Pin was deleted!"
  end

  private
    def set_pin
      @pin = Pin.find(params[:id])
    end

    def pin_params
      params.require(:pin).permit(:description)
    end
end

Pins Model = pin.rb

class Pin < ActiveRecord::Base

    validates :user_id, presence: true
    validates :description, presence: true
    has_attached_file :image,
            :path => ":rails_root/public/system/:attachment/:id/:style/:filename",
      :url => "/system/:attachment/:id/:style/:filename"
    validates_attachment :image, content_type: { content_type: ['image/jpeg', 'image/jpg', 'image/png' 'image/gif'] },
                                                                size: { less_than: 5.megabytes }

    belongs_to :user

end

Answer 1

在def pin_params上，您应该添加图片文件的权限;所以它会是：

def pin_params
   params.require(:pin).permit(:description, :image)
end

Rails 4 - Paperclip不显示上传的图像

1 个答案: