how to write an binary file to ftp

rubyonrails-talk
1

Net::FTP#putbinaryfile(binary_file, remotefile)

binary_file is not a local file from some directory,but a dynamic generation from codes.

The above codes not work,how to write it to ftp?

2

My server does not support filesystem writing,so i can not store the binary_file data as an image in the file directory,and then send the image using Net::FTP#putbinaryfile method. Could i send the binary_file directly using Net::FTP#putbinaryfile(binary_file, remotefile)?

Looking at the source to net/ftp it doesn't look like putbinaryfile can do that, however all putbinaryfile seems to do is open up the file and pass it to storbinary, presumably you could pass any IO object (eg a StringIO) to storbinary.

Fred

3

thanks,Fred. But i get the ftppermerror when using storbinary and StringIO.

4

thanks,Fred. But i get the ftppermerror when using storbinary and StringIO.

are you sure the specified user can upload files

######## Net::FTP.open('showreelfinder.com') do |ftp| ftp.passive=true ftp.login(name,password) ftp.chdir('www.showreelfinder.com/web/site/temp/uploads/heywatch /thumbnails')

 thumbnail\_file=StringIO\.new\(thumbnail\)
 ftp\.storbinary\("STOR"\+"\#\{thumb\_title\}",thumbnail\_file,1024\)

Looks like you are missing a space after STOR, you should probably also make the chdir and absolute path.

Fred

5

are you sure the specified user can upload files yes,i am sure

######## Net::FTP.open('showreelfinder.com') do |ftp| � � � ftp.passive=true � � � ftp.login(name,password) � � � ftp.chdir('www.showreelfinder.com/web/site/temp/uploads/heywatch � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �/thumbnails')

� � �thumbnail_file=StringIO.new(thumbnail) � � �ftp.storbinary("STOR"+"#{thumb_title}",thumbnail_file,1024)

Looks like you are missing a space after STOR,

   thank,i will try. you should probably

also make the chdir and absolute path.

  I am sure the following path is right

6

thumbnail_file=StringIO.new(thumbnail)

do i need to change the above like this?Because i think the thumbnail is binary file.

thumbnail_file=StringIO.new(thumbnail.to_s)

7

thumbnail_file=StringIO.new(thumbnail)

do i need to change the above like this?Because i think the thumbnail is binary file.

If you've got a string ruby doesn't care about what's in it (of course exactly what that line should depends on what kind of object you have). You wouldn't get a permission error if you got that wrong though - you'd probably just upload junk

Fred

8

If you've got a string ruby doesn't care about what's in it (of course exactly what that line should depends on what kind of object you have). You wouldn't get a permission error if you got that wrong though - you'd probably just upload junk

hi fred

  After add a blank character and change thumbnail to thumbnail.to_s,my project works now.Thank you very much.