我是 ruby 的新手。我遇到了问题。我想制作一个文件上传功能,通过它我可以上传任何类型的文件(文本,图像等)。
我的 Controller 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 => "File has been uploaded successfully"
end
end
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'
# create the file path
path = File.join(directory,name)
# write the file
File.open(path, "wp") { |f| f.write(upload['datafile'].read)}
end
end
我的查看文件是(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 %>
现在,当我尝试上传图像时,我在模型文件中收到“无效的访问模式wp”错误。当我在模型文件中将File.open(path,“wp”)更改为File.open(path,“w”)时,这会导致错误“\ x89”从ASCII-8BIT变为UTF-8。对于.txt文件,它可以正常工作。
我正在使用ruby 1.9.3和rails 3.2.6
最佳答案
例如,谢谢您,我也学习护栏!
它可以在Rails 3.1中工作
我的代码:
Routes
resources :images do
collection { post :upload_image }
end
控制者
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>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 %>
模型
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
关于ruby-on-rails - 如何在Rails上上传ruby文件?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11342338/