不能显示与回形针

Question

我试着去保存用户在表单中输入的数据，在数据库中这样上传的图片：

images_controller.rb

class ImagesController < ApplicationController 
    layout 'home2' 
    #before_action :set_image, only: [:show, :edit, :update, :destroy] 
    def new 
    @image = Image.new 
    end 

    def create 
    @image = Image.new(image_params) 
    #@image1 = Image.new(params[:image_filename]) 
    # 
    if @image.save 
     flash[:notice] = "Your creation has been uploaded" 
     redirect_to "/showcase" 
    else 
     flash[:error] = "Your creation has not been uploaded" 
     render :new 
    end 
end 

    private 

    def image_params 
     params.permit(:title, :description, :nickname, :creation) 
    end 
end 

但是，它尝试在按下提交按钮之前以基数发送数据。

在此先感谢您的帮助。

Answer 1

试试这个，

<%= image_tag @image.creation.creation_url(:thumb) %> 

Answer 2

你试图用params[:images]创建映像的实例和PARAM的值是空的。

尝试images_controller.rb改变这个

def create 
    @image = Image.new(post_params) 
    if @image.save 
    #redirect somewhere. You didn't create a route for `show` or `edit`. 
    else 
    render :new 
    end 
end