I''ve a controller with an action that should read an image file from a
specified path and do some operations on it (mainly, resize it).
I try to read the image through this line of code (the image is placed
in applicationname\public\images.
img = Magick::Image.read("world.jpg")
The fact is that whenever I open that page, the browser freezes and I
have to restart my webserver (for instance, I''m using Webrick on
Windows
XP)...
How could I solve that?
Thanks in advance.
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> How could I solve that? > > > Thanks in advance.Here''s one I''m using. Let me know if you have questions. You can catch any exceptions and output the error, which might help you figure out what''s going on with your setup. Also check your logs for any reported errors. def submit_crop_image require ''RMagick'' @user = curr_user tmpfile = "#{RAILS_ROOT}/public/images/users/tmp/#{@user.id}.jpg" img001 = "#{RAILS_ROOT}/public/images/users/#{@user.id}_001.jpg" img002 = "#{RAILS_ROOT}/public/images/users/#{@user.id}_002.jpg" img003 = "#{RAILS_ROOT}/public/images/users/#{@user.id}_003.jpg" size001 = 100 size002 = 50 size003 = 16 top = params[''top''].to_i left = params[''left''].to_i width = params[''width''].to_i height = params[''height''].to_i begin img = Magick::Image::read(tmpfile).first unless width == 0 or height == 0 img.crop!(left,top,width,height) end img.resize! size001, size001 img.write img001 img.resize! size002, size002 img.write img002 img.resize! size003, size003 img.write img003 File.delete tmpfile rescue Exception => err @upload_image_error = ''Could not process your image file. Please try again.'' + err render :action => ''edit_image'' else @user.image_flag = ''Y'' @user.save redirect_to :action => "profile", :username => @user.username end end -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Thanks for the quick reply.
I get this error, which is pretty weird. I''ve created a variable with
the path to my image:
myfile = "#{RAILS_ROOT}/public/images/world.jpg"
but when I call the Read method of the Image class (img =
Magick::Image::read(myfile).first), I get this:
unable to open image `la/public/images/world.jpg'': No such file or
directory
It seems like the #{RAILS_ROOT} is truncated... :-/
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Andrea Gandino wrote:> Thanks for the quick reply. > > I get this error, which is pretty weird. I''ve created a variable with > the path to my image: > > myfile = "#{RAILS_ROOT}/public/images/world.jpg" > > but when I call the Read method of the Image class (img = > Magick::Image::read(myfile).first), I get this: > > unable to open image `la/public/images/world.jpg'': No such file or > directory > > It seems like the #{RAILS_ROOT} is truncated... :-/For troubleshooting take RMagick out of the equation and just test find the file with: myfile = "#{RAILS_ROOT}/public/images/world.jpg" File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read } Also, trying using "script/console" to play with this. The above lines can be typed in there. It will make it easier to experiment without crashing the development web server. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Alex Wayne wrote:> > myfile = "#{RAILS_ROOT}/public/images/world.jpg" > File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read > }This is what I get:>> myfile = "#{RAILS_ROOT}/public/images/world.jpg"=> "./script/../config/../config/../public/images/world.jpg">> File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read }SyntaxError: compile error (irb):2: syntax error File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read } ^ (irb):2: syntax error File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read } ^ (irb):2: syntax error from (irb):2 As you can see, #{RAILS_ROOT} is totally messed up... -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Andrea Gandino wrote:> As you can see, #{RAILS_ROOT} is totally messed up...The weird thing is that if I do: File.size(myfile), it returns the filesize correctly, confirming that the file exists... :-/ But when I call Image.read I get the same old error... No matter if I use #{RAILS_ROOT} or not... -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
> As you can see, #{RAILS_ROOT} is totally messed up...No, your RAILS_ROOT is fine. You need parentheses around method arguments when passing a block with { }:>> RAILS_ROOT=> "script/../config/../config/..">> myfile = "#{RAILS_ROOT}/public/javascripts/application.js"=> "script/../config/../config/../public/javascripts/application.js">> File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read }SyntaxError: compile error (irb):3: parse error, unexpected ''{'', expecting $ File.open myfile, ''r'' { |f| puts "Success!\n\nFile Contents:" + f.read } ^ from (irb):3>> File.open(myfile, ''r'') { |f| puts "Success!\n\nFile Contents:" + f.read }Success! File Contents:// Place your application-specific JavaScript functions and classes here // This file is automatically included by javascript_include_tag :defaults => nil>>-- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Curtis Summers wrote:>> As you can see, #{RAILS_ROOT} is totally messed up... > > No, your RAILS_ROOT is fine. You need parentheses around method > arguments when passing a block with { }:Thanks to all for the help, so far, you''ve been great! From my console now I can call the methods of the Image class with no problems. Still I''m not able to do what I want, that is: img.write "mythumbnail.jpg" and display my image in the browser... Ideas? -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
> Still I''m not able to do what I want, that is: > > img.write "mythumbnail.jpg" > > and display my image in the browser... Ideas?Did you specify the path while writing? img.write "#{RAILS_ROOT}/public/images/mythumbnail.jpg" Display in the browser should be like displaying any other image with an img tag. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Curtis Summers wrote:>> Still I''m not able to do what I want, that is: >> >> img.write "mythumbnail.jpg" >> >> and display my image in the browser... Ideas? > > Did you specify the path while writing? > > img.write "#{RAILS_ROOT}/public/images/mythumbnail.jpg"I have, but no results... Is there another way to create thumbnails, besides RMagick? :( -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ 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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---