I am using Net::FTP's getbinaryfile functionality to pull in a zip file with FTP. My system is not aware of the full file name, so I would simply like to search the folder for the zip file extension. Usually I would simply input the filename as *.zip. This does not seem to work.
ftp = Net::FTP.new(domain)
path = "#{Rails.root}/public/ftp/#{self.id}.zip"
ftp.getbinaryfile("*.zip", path)
I used the following code to return the zip file name in the FTP folder. Then using the same code as above, I was able to run getbinaryfile with the correct zip file name.
files = ftp.nlst("*.zip")
I use the following to get all zip files (I'm using SFTP but hopefully this will point you in the right direction)
Net::SFTP.start(domain, user, :password => 'pass') do |sftp|
sftp.dir.glob("/yourdirectory","*.zip").each do |file|
sftp.download!(file, "/local/spot")
end
end
Related
I'm trying to allow for a user to upload a zipped folder containing xsl stylesheets.
I then want to unzip the folder and save the folder in Rails.root/public/xsl/folderName
Here's what I'm trying in my action:
require 'zip'
Zip::File.open(params[:stylesheet].tempfile) do |zipFile|
zipFile.each do |file|
path = File.join(Rails.root.join('public','xsl'),file.name)
File.open(path, 'wb') do |f|
f.write(file)
end
end
end
I'm getting Zip::Error: Zip end of central directory signature not found from /GEMS/gems/rubyzip-1.3.0/lib/central_directory.rb:143:in `get_e_o_c_d`
This error is happening on the first line of the code. I've tried zipping the folder through 7Zip and sending the folder to Window's "Compressed (zipped) folder".
Thanks!
Zip::Error: Zip end of central directory signature not found from /GEMS/gems/rubyzip-1.3.0/lib/central_directory.rb:143:in get_e_o_c_d
Error indicates: Perhaps, the .xlsx file was corrupted also You can discover that the zip is corrupted or not by trying to unzip it from your code.
In solutiions: The content by forced it to encode as utf-8, and handle the buffer file after the upload also extract its data after it. I suggest to use the code of
roo-xls gem, and it's handle both .csv/.xlsx files very easy way.
I'm using ruby on rails to modify a powerpoint presentations existing template's xml files (open xml) based on data from my postgres database.
The issue I am facing is that after the file is generated and downloaded from heroku using a windows machine, microsoft powerpoint detects the file as corrupted and attempts to repair. After repairing the file generated in powerpoint, the file opens correctly.
If i download the file from a Linux machine and send the file to a windows machine, the file opens correctly without warning or attempt to repair. The powerpoint generated also opens correctly on Open office.
Technically, these are the steps that I am using to generate the file.
Open the template from the assets folder of my application
Extract the files in a tmp folder using Rubyzip gem
Open and modify the individual files using Nokogiri
Compress the file to a .pptx file
Upload/Save file using active storage
Redirect user to the file for download
Extract files method
def self.extract_files(dir_prefix)
Zip::File.open(Rails.root.join('app', "assets", "ppt", 'test_8.pptx')) do |z|
z.each do |f|
##Extract files in a directory
f_path=File.join("tmp/#{dir_prefix}_destination", f.name)
FileUtils.mkdir_p(File.dirname(f_path))
z.extract(f, f_path) unless File.exist?(f_path)
end
end
end
Opening files for manipulations using:
chartxml = File.open(Rails.root.join('tmp', tmp_extract_folder, 'ppt', 'charts', 'chart5.xml'))
##Manipulation logic here
File.write(Rails.root.join('tmp', tmp_extract_folder, 'ppt', 'charts', 'chart5.xml'), doc.to_xml)
Re-zipping files using:
zf =ZipFileGenerator.new("tmp/#{dir_prefix}_destination", "tmp/#{dir_prefix}_zipped.pptx")
The implementation of the zip file generator is the same as the one provided on Rubyzip's github repo
I'm then storing using active storage using:
ppt = Powerpoint.new(name: "#{dir_prefix}")
ppt.file.attach(
io: File.open("tmp/#{dir_prefix}_zipped.pptx"), filename: 'Synthese.pptx', content_type: 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
)
ppt.save
render :js => "window.location = '#{download_ppt_path(dir_prefix: dir_prefix)}'"
The user then downloads the file:
ppt = Powerpoint.where(name: dir_prefix)
redirect_to rails_blob_path(ppt.first.file, disposition: "attachment")
I tried uncommenting the code which does the manipulation of the xml files, and just unzipping and rezipping; I still face the same issue.
Using Rails 3.2, carrier wave, and recently switched to store on Amazon S3. My setup and uploads are all working fine.
1. I have image_uploader.rb to upload and store images. Displaying them all works fine
2. I have file_uploader.rb to upload and store files. I've even taken it a step further to upload ZIP files and extract a version so that both the ZIP file and TXT files are stored in the correct place on S3.
My problem is I run a method on the TXT file. In the past, I used storage :file
With that I was able to:
Dir.chdir("public/uploads/")
import_file = Dir['*.TXT'].first
f = File.new(import_file)
Now, that I'm using storage :fog I can't get seem to retrieve/File.new/Open the file.
I see the file with the usual commands:
#upload1.team_file # stored file
#upload1.team_file.url # url
#upload1.team_file_url(:data_file).to_s # version created
I've been pouring through all kinds of very limited leads on retrieving and/or opening the file, but everything I try seems to return errors, such as:
Errno::ENOENT: No such file or directory - https://teamfiles.s3.amazonaws.com/data_files…
Thoughts on the difference here of retrieving and USING a file from AmazonS3? Thanks!
Pulling from multiple threads, APIs, etc. I'm answering my own question with what I've found. I welcome any corrections or improvements:
To retrieve carrierwave files uploaded to AmazonS3, you have to understand that open(#upload.file_url) or File.open(#upload.file_url) does NOT open the file, it only opens the PATH to the file. (ref: Ruby OpenURI )
I use: open_uri_url = open(#upload.file_url)
You then have to find the specific file in that path that you want. For me, I then find a ZIP file that was uploaded to AmazonS3 and Extract the specific file within the ZIP file that I want with a unique *.ABC extension:
zip_content_file = Zip::File.open(open_uri_url).map{|content| content if content.to_s.split('.').last == "ABC"}.compact.first
Now, from here, where to extract to?? I create a unique directory in the Rails tmp directory to extract the file to, use it and then delete the directory:
tmp_directory = "tmp/extracts/#{#upload.parent_id}/"
FileUtils.mkdir_p(tmp_directory) unless File.directory?(tmp_directory)
extract = zip_content_file.extract(tmp_directory + content_file.to_s)
Now with found from the AmazonS3 stored ZIP file and extracted, I can open, read, etc:
f = File.new(tmp_directory + extract.to_s)
I hope this helps with Carrierwave, AmazonS3, ZIP files and using them once uploaded.
Not sure what's the matter here :
file = Rails.root.join(Attachment.last.attachment.url(:original))
# => "/system/attachments/3/original/!my_awesome_pdf.pdf?1359735260"
Then I try and do this :
File.new(file, 'rb')
# => No such file or directory - /system/attachments/3/original/!my_awesome_pdf.pdf?1359735260
Why would that happen? I'm trying to be able to select the file to upload to GroupDocs.com
Ah the problem was that URI's will throw off Ruby from recognizing the name of the file. Removing the URI allows Ruby to open the file.
I need to create a local xml file from a rails application and then copy it to a location on another server.
I have tried using the File.new option to create a new file but it gives me an error saying the file does not exist. After looking closer at the documentation it says that File.new opens a file that already exists.
I can't see any way to create a local file using Ruby, what am I missing?
Assuming you have built up your XML into a string, xml_string, you can do:
xml_file = open(filename, 'w')
xml_file.write xml_string
xml_file.close
Or using the block syntax to achieve this in one line:
File.open(local_filename, 'w') { |f| f.write(xml_string) }