file uploading with ruby made easy

paul vudmaska <[email protected]> Fri, 23 Jan 2004 16:03:01 -0800 (PST)
Newsgroups	gmane.comp.apache.mod-ruby
Message-ID	<[email protected]>
Uploading was not as hard as I had thot! Attached is a
file that should get you going uploading and included
in text below....good luck !

upload.rbx

=begin

	upload.rbx is meant to be illustrative and might not
serve your purposes but should 
	get you started if you need to upload with
Ruby/modruby

	{{{http://www.rubycentral.com/book/lib_network.html
	
	
	Multipart Form Values

	When dealing with a multipart form, 
	the array returned by CGI#[] is composed of objects
of class Tempfile, 
	with the following dynamically added methods: 
	
		original_filename
		local_path
		content_type
		size
		
	To make this file work you'll need to...
	
		make it executable
		make your upload directory writable(Upload::PATH)
		
		...and that _should_ be it
		
	}}}
	
=end


begin

	def main
	#{{{
		require 'cgi'
		
		$cgi = CGI.new("html4")
		
		$cgi.header('content-type'=>'text/html')
		
		puts '<html><body>'	
		
		if $cgi.params.length == 0 
		
			Upload.form 
		else 

			Upload.post 
			
			print Upload.getStatus
			
		end
	
		puts '</body></html>'
		
	end#}}}

	

rescue Exception=>e

	puts e

end

class Upload
#{{{ -----------------------Uploads file to server
from html form--------------------------
	
	#max size of file
	MAX_SIZE     = 25000
	
	#where the file goes / MUST HAVE WRITE PRIVS HERE
	PATH	 	 = "/YOUR_FILE_PATH_HERE_PLEASE/"
	
	#how many file inputs - you can upload multiple files
at once
	FILE_COUNT	 = 5
	
	#what file types do we allow?
	CONTENT_TYPES= ['image/jpg','image/gif']
	
	#how are things going?
	@@status 	 = []
	
	def self.form
	#{{{
	
		puts '<form method="post"
enctype="multipart/form-data">'
		
		FILE_COUNT.times do 
		
			puts '<br/><input type="file" name="myfile">'

		end
			
		 puts '<p/><input type="submit"></form>'	
	
	end#}}}

	
	def self.post		
	#{{{
	
		$cgi['myfile'].each do |incoming|
			
			if incoming.size == 0
				
				@@status << "<br/>Avoiding empty field"
				next
			
			end
			
			if incoming.size > MAX_SIZE
				
				@@status << "<br/>Data too large for
#{incoming.original_filename}(#{incoming.size} >
#{MAX_SIZE})"
				next			
			
			end
			
			#need to strip :)...trailing space...ouch
			if not CONTENT_TYPES.include?
incoming.content_type.strip
				
				@@status << "<br/>Type not allowed(type =
#{incoming.content_type}) allowed content =
#{CONTENT_TYPES.join(' | ')}"
				next			
			
			end			
			
			# all should be ok to upload
			path 	 = PATH + incoming.original_filename
			
			File.new(path.untaint,'w') do |file|
				
				file << incoming.read
			
			end
			
			@@status << "<br/>done writing #{path}"
		end	
	
	end#}}}
	
	def self.getStatus
	#{{{
		
		@@status
	
	end#}}}
end#}}}



main

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upload.rbx (application/octet-stream, 2.5 KB) - not displayed