From: Belorion <belorion@...>
Date: 2005-01-26T03:17:51+09:00
Subject: Re: ruby cgi and forms question

If I recall correctly, multi-part form data comes as type StringIO,
not String.  Check out
http://www.ruby-doc.org/stdlib/libdoc/stringio/rdoc/ for RDoc
documentation on StringIO.  You can probably get the string by
StringIO.read.

require 'stringio'
a = StringIO.new( "foo")
a.read

will give "foo"


On Wed, 26 Jan 2005 02:55:14 +0900, MATTHEW REUBEN MARGOLIS
<mrmargolis@wisc.edu> wrote:
> I have a form that contains both text fields and a file field for
> uploading.  The form is set to post to a ruby script on my server.  The
> script works(excluding file  uploading) when I delete
> ENCTYPE="multipart/form-data" from the form tag but if that is
> present(and it needs to be for the image upload to work) then ruby cgi
> chokes on a gsub for one of my text field parameters called comment.
> 
> imageadmin.rb:14: private method `gsub!' called for
> #<StringIO:0x20221278> (NoMethodError)
> 
> Anyone have some ideas for how I can make this work?
> 
> Here is the form code (it is from an eruby file)
> -----------------------------------------------------
> % imageArray = Dir.glob("*.jpg").sort!
> % commentArray = imageArray.collect {|image| image[4..-5]}
> % commentArray.collect {|image| image.gsub!("_", " ")}
> 
> <FORM  ENCTYPE="multipart/form-data" action="imageadmin.rb" method="post">
> <%imageArray.length.times do |count|%>
>   <img src="<%=imageArray[count]%>">
>   <BR />
>   Comment:<input type="text" name="comment"
> value="<%=commentArray[count]%>">
>   <BR />
>   Number:<input type="text" name="order"
> value="<%=imageArray[count][0..2] %>">
>   <BR />
>   Delete:<input type="checkbox" name="delete"
> value="<%=imageArray[count]%>">
>   <BR />
> <%end%>
> <BR />
> <BR />
> <input type="file" value="upload">
> Comment:<input type="text" name="uploadcomment" value="">
> 
> <BR />
> <input type="submit" value="Submit">
> </FORM>
> -----------------------------------------------------------------
> 
> And here is the script itself.  I apologize for the lack of comments and
> that it isn't as short as it could be.  I am going to clean it up tonight.
> -----------------------------------------------------------------------
> #!/usr/bin/env ruby
> $stderr = File.open("error.log", "w+")
> print "Content-type: text/html\n\n"
> require 'cgi'
> cgi = CGI.new
> 
> deleteArray = cgi.params['delete']
> imageArray = Dir.glob("*.jpg").sort!
> oldArray = Dir.glob("*.jpg").sort!
> commentArray = cgi.params['comment']
> 
> #####Here is where I get the error#####
> commentArray.each {|com| com.gsub!(" ", "_")}
> numberArray = cgi.params['order']
> 
> count = imageArray.length
> 
> count.times do |x|
>   imageArray[x].sub!(/^\d\d\d/, numberArray[x])
> end
> 
> count.times do |x|
>   imageArray[x] = numberArray[x] + "_" + commentArray[x] + ".jpg"
> end
> 
> count.times do |x|
>   File.rename(oldArray[x], imageArray[x])
> end
> 
> #uploadImage = cgi['upload']
> #if uploadImage
> #  ucomments = cgi.params['uploadcomment']
> #  ucomments.each {|com| com.gsub!(" ", "_")}
> #  image = File.new("#{ucomments}.jpg", "w+")
> #  image << uploadImage
> #  image.close
> #end
> 
> for thing in deleteArray
>   File.delete(thing)
> end
> 
> print "<meta  HTTP-EQUIV=\"REFRESH\" content=\"0; url=admin.rhtml\">"
> 
> -------------------------------------------------------------------
> 
> Thank you,
> Matthew Margolis
> 
>