similar to: Resize uploaded image file without creating temp file?

I see that the SVN version of the excellent file_column plug-in can create thumbnails using the url_for_image_column helper. This uses Rmagick to create the thumbnail... Quick question... Let''s say the file is a TIFF image - can the helper create a JPG version of the thumbnail for display in the browser? Curious if the plug-in can handle that transform with some creative use of the

This piece of code takes an uploaded image and resizes it. It''s a bit nasty at the moment as I am still messing around with it. What I can''t understand is why it works for one iteration but then fails with: zero-length blob not permitted `'' On the line: img = Magick::Image.from_blob(self.image).first I am basically doing this in the controller and it fails on the

Dear guRus, is there a package that calculates the Approximate Entropy (ApEn) of a time series? RSiteSearch only gave me a similar question in 2004, which appears not to have been answered: http://finzi.psych.upenn.edu/R/Rhelp02a/archive/28830.html RSeek.org didn't yield any results at all. Happy holidays (where appropriate), Stephan

hi im saleh please help me I WANT SOURSE CODE SIMILAR THIS CODE package asl; import java.awt.*; import java.awt.event.* ; import java.applet.*; public class animat1 extends Applet implements Runnable{ int c = 290, d = 300; int x = 20, k = 20, o = 0, m = 10, n = 0, y = 0; Thread t = new Thread(this); Image img1, img2, img3; // AudioClip a1; public void init() {

I have a csv file and in my controller: uploaded_file = params[:upload][:csv].read @rows << FasterCSV.parse(uploaded_file) I want to put in @rows only the first 10 lines but the read method reads all the file. How can I do? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

I submitted this earlier, but the web forums went down and I''ve screwed up the thread, so I''m starting over. I''m trying to built a document upload system. The system has a main Document model with different subclasses for different types of documents. With the code below, if I attempt to create a Document, it works fine, but if I attempt to use one of the subclasses, I

I get the following error at the browser: ArgumentError in ImagesController#upload invalid geometry string `110×'' ... for the call to change_geometry with an explicit size (''110x'') as the geometry string: def make_thumb (the_img) require ''RMagick'' size = "110x" debugger if ENV[''RAILS_ENV''] ==

i have a rails app with a form that allows uploading an image file. I take the image file and read it into rmagick to verify that it''s an image. For some reason I can''t catch an exception thrown by rmagick inside the app. After an invalid image file is uploaded the process just hangs. I have to kill mongrel and restart to use the app again. img =

Hi, im getting a little trouble with this, im using TinyFile as the example to upload files http://wiki.rubyonrails.com/rails/pages/TinyFile/versions/20 All goes well but the files uploaded are saved with permissions 600 (linux) and in the case of images arent showed on the browser(but uploaded and stored in the server without problems) i have to manually ftp to the uploaded files folder and

I got this error: NoMethodError in PictureController#new You have a nil object when you didn''t expect it! The error occured while evaluating nil.uploaded_file= and the line code is here: @picture.uploaded_file = @params[''picture_file''] -- Posted via http://www.ruby-forum.com/.

Hi, I''m trying to delete a file system (<xml_26548975.xml>) File.delete("xml_26548975.xml") But I get this error: "Permission denied - ./script/../config/../uploads/xml_26548975.xml". Why? -- Cheers, ioana k&a http://boulangerie.wordpress.com/ -------------- next part -------------- An HTML attachment was scrubbed... URL:

Where should I look for information on how to use Rails and Ruby to accept the upload of a file and then to save that file to the file system of my server? I''m reading the "Uploading a file" section of Agile Web Dev with Rails, but it''s geared toward saving the file in the database. Any advice? Thanks, Jeff -- Posted via http://www.ruby-forum.com/.

Hi all, I was wondering about the class used when rails receives file uploads. Sometimes it appears to be a File, and other times it is a StringIO. Also it has methods such as original_filename that don''t appear to belong to either of these classes. I ask because I''m trying to work out how to test my fil upload related models and controllers. Is there some standardised way of

I am trying to implement the uploading of a file to a remote server I get error while trying to write the file on the server. The error I get is the following: undefined method `rewind'' for #<String:0x2aaaad062eb8> It seems to be treating my file as a string instead of a File object. --------- Code is below ------------------ VIEW: <%=

Hi! Today I needed to implement some controller code, that uses send_file() to send image data. How can this be tested / specified with RSpec? bye, Tobias

So any files that are uploaded through my form are getting the following mode: -rw------- I need them to have: -rw-r--r-- I''ve tried setting the umask in a script file called set_umask.rb as follows: File.umask(022) and then starting mongrel using: mongrel_rails start -m config/mime.types -S set_umask.rb but it doesn''t seem to change the mode that the files are created

Dear all, I have used RMagic to read and write a image while uploading. An animated gif was read from my local machine and was written in my images folder using RMagick. But the animated gif which i read was witten in my folder without animation. What should i do to write the gif image with animation. Here is my code to read and write image while uploading. image = params[:image][:blob]

** File uploads with AJAX mojo ** Respond with RJS to your parent window with a form action targeted to a hidden IFRAME. Handles all the painful situations like scoping your JavaScript to your parent window generating the script block for execution and clearing the IFRAME after execution so the back button doesn''t re-execute the action. `plugin install

Hi, I''m not sure if this is a postgres issue or not, but I''m using Postgres 8.1. I have (in my functional tests) the following code: upload = fixture_file_upload(''/files/podcast.mp3'', ''audio/mpeg'') post :create, :product => valid_product, :media => { :image => upload } And then in the controller: blob = Blob.create :data

I am creating a database for movies (films) and television shows (shows) that will have has_and_belongs_to_many relationships with the pictures table. CREATE TABLE screenshots ( id serial NOT NULL, filename character varying NOT NULL, content_type character varying NOT NULL, primary key (id) ); CREATE TABLE films ( id serial NOT NULL, name character varying NOT NULL,