Rubyzip下载附件没有创建存档

Question

我使用rubyzip与rails 4我试图做一个自定义的方法来下载提交表中的所有附件，而不用phisically创建zip文件。

submissions_controller.rb

def download 
    @submissions = Submission.all 

    file = "#{Rails.root}/tmp/archive.zip" 

    Zip::ZipFile.open(file, Zip::ZipFile::CREATE) do |zipfile| 
     @submissions.each do |filename| 
     zipfile.add(file, filename.file.url(:original, false)) 
     end 
    end 
    zip_data = File.read(file) 
    send_data(zip_data, :type => 'application/zip', :filename => "All submissions") 
    end 

如何设置文件VAR权利。文档说这是存档名称，但我不想创建该物理存档。也许只是一个tmp？

Answer 1

这是使我的代码工作100％的罚款正确的语法：

# Download zip file of all submission 
    def download 
    @submissions = Submission.all 

    archiveFolder = Rails.root.join('tmp/archive.zip') #Location to save the zip 

    # Delte .zip folder if it's already there 
    FileUtils.rm_rf(archiveFolder) 

    # Open the zipfile 
    Zip::ZipFile.open(archiveFolder, Zip::ZipFile::CREATE) do |zipfile| 
     @submissions.each do |filename| 
     zipfile.add(filename.file_file_name, 'public/files/submissions/files/' + filename.id.to_s + '/original/' + filename.file_file_name) 
     end 
    end 

    # Send the archive as an attachment 
    send_file(archiveFolder, :type => 'application/zip', :filename => '2016 Submissions.zip', :disposition => 'attachment') 
    end 

Answer 2

更改代码：

def download 
    @submissions = Submission.all 

    file = "#{Rails.root}/tmp/archive.zip" 

    Zip::ZipFile.open(file, Zip::ZipFile::CREATE) do |zipfile| 
    @submissions.each do |filename| 
     zipfile.add(file, filename.file.url(:original, false)) 
    end 
    end 
    send_file(file, :type => 'application/zip', :filename => "All submissions") 
end 

您应该使用send_file不send_data。