如何上传在轨道上的红宝石文件？

本文介绍了如何上传在轨道上的红宝石文件？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我在轨道上的红宝石很新。我遇到了一个问题。我想做一个文件上传功能，通过它我可以上传任何类型的文件（文本，图像等）。 我的控制器文件是（upload_controller.rb）：

class UploadController< ApplicationController def index render：file => 'app \views\upload\uploadfile.html.erb' end def uploadFile post = DataFile.save（params [：upload]） render：text => 文件已成功上传结束结束

我的模型文件是（data_file.rb）：

class DataFile< ActiveRecord :: Base attr_accessor：upload def self.save（upload） name = upload ['datafile']。original_filename directory ='public / data'＃创建文件路径 path = File.join（directory，name）＃写入文件 File.open（path，wp）{| f |阅读）} end end

< h1>文件上传< / h1>我的查看文件是（uploadfile.html.erb） <％= form_tag（{：action =>'uploadFile'}，：multipart => true）do％> < p>< label for =upload_file>选择文件< / label> <％= file_field'upload'，'datafile'％>< / p> <％= submit_tag上传％> <％end％>

现在当我尝试上传图片时，在模型中出现错误invalid access mode wp文件。当我在模型文件中将File.open（路径，wp）更改为File.open（path，w）时，发出错误'\x89'从ASCII-8BIT到UTF-8。对于.txt文件，它工作正常。 我正在使用ruby 1.9.3和rails 3.2.6

解决方案

谢谢你的例子，我学习rails

它在rails 3.1中工作

我的代码：

路线资源：图片集合{post：upload_image} 结束

控制器

class ImagesController< ApplicationController def index @car = Car.find（params [：car_id]） @images = @ car.images.order（order_id） end def upload_image DataFile.save_file（params [：upload]） redirect_to images_path（：car_id => params [：car_id]） end

查看index.html.erb

< h1>档案上载< / h1> <％= form_tag（{：action =>'upload_image'，：car_id => @ car.id}，：multipart => true）do％> < p>< label for =upload_file>选择文件< / label> <％= file_field'upload'，'datafile'％>< / p> <％= submit_tag上传％> <％end％> <％@ images.each do | image | ％GT; <％= image.id％>< br /> <％= image.name％> <％end％>

模型

class DataFile< ActiveRecord :: Base attr_accessor：upload $ b $ def self.save_file（upload） $ b file_name = upload ['datafile']。original_filename if（upload ['datafile ']！=''） file = upload ['datafile']。read $ b file_type = file_name.split（'。'）。last new_name_file = Time.now .to_i name_folder = new_name_file new_file_name_with_type =＃{new_name_file}。 + file_type $ b image_root =＃{RAILS_CAR_IMAGES} Dir.mkdir（image_root +＃{name_folder}）; File.open（image_root +＃{name_folder} /+ new_file_name_with_type，wb）do | f | f.write（file） end end end

I’m very new in ruby on rails. I’m stuck with a problem. I want to make a file upload functionality through which I can upload any kind of file (text,image etc.). My controller file is (upload_controller.rb):

class UploadController < ApplicationController def index render :file => 'app\views\upload\uploadfile.html.erb' end def uploadFile post = DataFile.save(params[:upload]) render :text => "File has been uploaded successfully" end end

My Model file is (data_file.rb):

class DataFile < ActiveRecord::Base attr_accessor :upload def self.save(upload) name = upload['datafile'].original_filename directory = 'public/data' # create the file path path = File.join(directory,name) # write the file File.open(path, "wp") { |f| f.write(upload['datafile'].read)} end end

My View file is (uploadfile.html.erb):

<h1>File Upload</h1> <%= form_tag({:action => 'uploadFile'}, :multipart => true) do %> <p><label for="upload_file">Select File</label> <%= file_field 'upload', 'datafile' %></p> <%= submit_tag "Upload" %> <% end %>

Now when I try to upload image then I'm getting error "invalid access mode wp" in model file. When I change File.open(path, "wp") to File.open(path, "w") in model file this give error "'\x89' from ASCII-8BIT to UTF-8". For .txt file, It works fine. I'm using ruby 1.9.3 and rails 3.2.6

解决方案

Thank you for example, I study rails too!

It works in rails 3.1

My code:

Routes resources :images do collection { post :upload_image } end

Controller

class ImagesController < ApplicationController def index @car = Car.find(params[:car_id]) @images = @car.images.order("order_id") end def upload_image DataFile.save_file(params[:upload]) redirect_to images_path(:car_id => params[:car_id]) end

View index.html.erb

<h1>File Upload</h1> <%= form_tag({:action => 'upload_image', :car_id => @car.id}, :multipart => true) do %> <p><label for="upload_file">Select File</label> <%= file_field 'upload', 'datafile' %></p> <%= submit_tag "Upload" %> <% end %> <% @images.each do |image| %> <%= image.id %><br/> <%= image.name %> <% end %>

Model

class DataFile < ActiveRecord::Base attr_accessor :upload def self.save_file(upload) file_name = upload['datafile'].original_filename if (upload['datafile'] !='') file = upload['datafile'].read file_type = file_name.split('.').last new_name_file = Time.now.to_i name_folder = new_name_file new_file_name_with_type = "#{new_name_file}." + file_type image_root = "#{RAILS_CAR_IMAGES}" Dir.mkdir(image_root + "#{name_folder}"); File.open(image_root + "#{name_folder}/" + new_file_name_with_type, "wb") do |f| f.write(file) end end end