回形针验证

Question

我想用回形针验证文件的存在。当我尝试提交表单时，它会回滚，但出于某种原因，它会查找不存在的create.erb模板。我不明白使用宝石任何类型的错误信息或者

class Image < ActiveRecord::Base 
has_attached_file :photo, 
:styles => { 
:thumb => "100x100#", 
:small => "750x750>" } 
validates_attachment_presence :photo 


class ImagesController < ApplicationController 
before_filter :require_user, :only => [:new, :create] 


def new 
@image = Image.new 
end 



def create 

@image = Image.new(params[:image]) 
@image.user = current_user 
    if @image.save 
    flash[:notice] = 'image uploaded' 
    redirect_to :controller => "images", :action => "index" 
end 
end 

def show 
@image = Image.find(params[:id]) 
end 

的，版本2.3.3

Answer 1

在你create你不处理，其中@ image.save返回false的情况。

def create 

    @image = Image.new(params[:image]) 
    @image.user = current_user 
    if @image.save 
    flash[:notice] = 'image uploaded' 
    redirect_to :controller => "images", :action => "index" 
    else 
    render :new # <== You forgot this. 
    end 
end 

没有那块它实际上试图再次渲染create，并失败。