similar to: loading an image to instance variable of AR

I am using CSV in a rake task (db:seed) on Rails 3.0.3, Ruby 1.9.2 to read a file with some funny chars in it. Upon breaking in at a point where the row read using CSV is in variable row, with the string with the char in row[''price''] I get the following strange results which I cannot understand. (rdb:1) row[''price''] "\xA32.00" (rdb:1)

I''m trying to display a generated .png plot via send_data(), but it results in a server error "invalid byte sequence in US-ASCII" error. I''m pretty sure this means that I need to specify the encoding somewhere, but I haven''t been able to figure out where or how to do so. Some particulars: I''m running gnuplot through a pipe to generate a plot in .png

Hi, I''m trying to use send_data to stream a file that is stored on my disk (not as a blob in the database.) So, this is what I''ve tried: send_data File.new(filename).read But, the file doesn''t download. I think send_data expects something other than a String (which is returned by File.read.) Anyone know how to get this working? The reason this is being done is to

I''m a newbie having trouble using send_data to send a jpeg file to the browser for display in an html img tag. This is the relevant code from my controller (photos_controller.rb): def retrieve @photo = Photo.find(params[:id]) send_data File.read(@photo.abs_img_path), :type => "image/ jpeg", :disposition => "inline" end def download @photo =

Greetings all. Does anyone have a clue how to use Ruby to do modular exponentiation using the binary left-to-right method? I looked through the documentation and searched the forums and found the String.each_byte method. However I had no luck finding anything showing how one might manipulate bits of bytes. Below is an example of what I am talking about. The calculation a = b^e mod n (or

Short question: is there way to tell EM to actually send data after send_data call? I''m building a file transferring app. I send Mashal.dump''ed metadata first, and then - the file contents (chunked). I found a silly bug: receive_data() gets marshalled metadata and the first chunk of the file in a single variable. Like that: c1.send_data("meta")

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I would like to extract an image BLOB from my database and display it alongside some other information on my ''edit'' page. I read the information here http://wiki.rubyonrails.com/rails/show/HowtoUploadFiles and that was really helpful. However, it still isn''t clear to me how I would get access to the image in my views if

I am using eventmachine 0.8.1 on windows XP and am having very odd problems. This snippet of code gives the error that follows it. class EchoServer def receive_data data puts data send_data ">>>you sent: #{data}" if data =~ /quit/i puts "quitting" close_connection EventMachine::stop_event_loop end end end

hi, i did a search and couldn''t find wat''s the problem with my code... it seems everything is the same and the result is what i expected but i am not sure where went wrong.... using send_data function to send the csv file to the client, the file sending is successfully but when i opened the csv file, something is wrong... every statement got a "......" inverted

Hi all, I have a problem with mongrel-1.1.2 running with Apache Apache/2.0.61 and MySQL 5.0.45 on FreeBSD 6.1. I''m developing my application with InstantRails that uses Mongrel and everything is working great. I have about 30 shops in a table. I also store the logo images (png files) in the table for each shop. Under Windows/InstantRails everything is working correct. When i however

Hi, I am using send_data to allow users to download files from the database but ran into a small problem, it seems that files upload fine but when they download only 64kb of the file is sent. I''m using the basic rails code from the Agile book: #upload code in my sheet model def file=(document_field) self.filename = base_part_of(document_field.original_filename)

I''m reading an image in an link_to_remote call,and then using send_data i send the read image as :type => "image/png" :disposition => "inline"...but when the div tag gets updated i see only ascii characters .....but if i do the same operation using normal call(link_to) i see it functioning normal ....could someone explain . my view: <%=

Hi all I made a pdf file in ruby and to display it used the method send_data like # send_data pdf.render, :filename => "Hello.pdf",:type => "application/pdf" # Now I want to open it in another window or as a popup. How can I achieve it? Thanks to all. Sainaba. -- Posted via http://www.ruby-forum.com/.

I''m trying to use send_data to send a simple text file. Every reference I can find says I can supply a MIME type with the ":type" option and that will determine the kind of file I get on the machine that downloads the file I''m sending. Instead I ALWAYS get an XML file. here''s the code snippet: File.open(@temp_download_file_path, ''r'') do

i''m storing images in database. i have this action in controller: def image begin item = StoredItem.find(:first, :conditions => {:id => params[:id]}) rescue return end return if item.nil? if item.image_binary.nil? render :nothing => true else send_data(item.image_binary, :type => item.image_datatype, :disposition =>

Has anyone else had trouble using send_data with internet explorer. As usual things were working fine in firefox and safari until I tested in IE :). With the following code I''m seeing an image show up in firefox but the "X" indicating no image found in IE. Any ideas? @image_data = Image.find(:all, :conditions=>{:url => "http://reddit.com"}) @image =

Dears, Got a controller witch do a send_data for displaying a chart. like : send_data(g.to_blob, :filename => "any.png", :type => ''image/png'', :disposition=> ''inline'') I actually do a <img src="http://myhost:3000/stats/make_graph" /> Is there any way more clean to do that ? At minima don''t hardcode the beginning

So this is the original code I used, and it worked send_file ''vendor/sprites/not-found.png'', {:filename => "sprite-not-found.png", :type => "image/png", :disposition => "inline"} Now I switched it to this (going to be adding imageMagick) send_data File.read(''vendor/sprites/not-found.png''), {:filename =>

I am still attempting to figure out how to send an Itext generated pdf Document to the browser. I am looking at the following blog posting where someone is using jruby and iText to create a pdf file and then sending it to the browser : http://codersifu.blogspot.com/2007/06/howto-generate-pdf-files-in-ruby-on.html Unlike the above example I am using only ruby / on rails. I would like to do

Hi! I need to generate some JS from Ruby. This is no AJAX related stuff so RJS templates are not help to me. Also I want to not mix JS with HTML, so putting JS in .rhtml templates is no go for me. Currently I made some action in controller, prepared JS code and I''m sending it via send_data as ''text/javascript''. In .rhtml templates I use <script> tag with src