search for: to_blob

Hi, for those with experience of Gruff module: suppose I want to send image from server straight to the browser (as example on gruff web site): send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "gruff.png") the server seems sending this binary data ok, but I am having trouble to display it properly: I have tried <%= link_to_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 beginnin...

I am trying to dynamically set the compression or quality of an image when displaying it. I have seen in the RMagick documentation how to set the quality only when writing the file to disk. How can I set the quality dynamically or set the compression? The method "image.quality=" does not exist and "image.compression_type=" is not in the documentation. I have tried

...this (with the labels and data array populated elsewhere): g = Gruff::Bar.new(750) g.title = "12 Month Graph" g.labels = title_array.reverse g.theme_37signals g.data("12 month graph", data.reverse, ''#378CDF'') send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "twelve_month_graph.png") Thanks for any help. -- Posted via http://www.ruby-forum.com/.

Hi, I am using "gruff" lib for creating the graphs. I have got the success to create the graph, but my problem is I don''t want to store it, I want that they should be displyed on the browser it self. I have tried this:- " send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "arbitaryfilename.png") " By using this it just shows that graph. I want to show the 5 graphs a a time. Like:- as objects I am going to create an object of the grohpa created...

I''m trying to use file_column in an app I''m writing. Simple file uploads are working fine. However, when I try and use the :magick options to make resized versions, WEBrick dies. This is the Media model: class Media < ActiveRecord::Base file_column :media_item, :magick => { :versions => { :thumb => {:size =>

...ere is my code to read and write image while uploading. image = params[:image][:blob] image1=params[:image][:blob].original_filename imgs = Magick::Image.from_blob(image.read) img = imgs.first File.open(RAILS_ROOT + "/public/images/banner/" + image1 , "wb") do |f| f.write(img.to_blob) end could anyone suggest me to solve this issue Thanks in advance, Regards, Jose Martin -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" gr...

I have two problems. I have a comment that has_many uploads. Before saving the comment, I want to be sure that the upload(s) has passed validation, but I also need to validate in other ways. For example, I do not want to save the comment if there is no comment or upload. Or, I do not want to save the comment if the image has been uploaded previously (comparing md5s with past upload md5s

...I''d like 500 width and 300 height g.title = "Samplegraph" g.labels = {1 => "Today", 3 => "Yesterday", 6 => "The Day Before"} g.theme_37signals g.data("Graph", data, ''#378CDF'') g.maximum_value = 10 send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "sample_graph.png -- Posted via http://www.ruby-forum.com/.

...create_image before_create :create_thumbnail def create_image @image = Magick::ImageList.new.from_blob(@upload_blob) self[:image_width] = @image.columns self[:image_height] = @image.rows end def create_thumbnail @thumbnail = Magick::ImageList.new.from_blob(@image[0].to_blob) if comment.parent_id == nil x = comment.board.setting(:parent_thumbnail_at_width) y = comment.board.setting(:parent_thumbnail_at_height) else x = comment.board.setting(:reply_thumbnail_at_width) y = comment.board.setting(:reply_thumbnail_at_height) end if...

...> [ "report_context = ''Required''" ] ) for report_items in @records report_number << report_item.amount.to_i labels << report_item.date end g.data("Reports", report_number) g.labels = labels send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "report_img.png") end Then, in the view, I have the following: <%= image_tag url_for(:controller => ''reports'', :action => ''create_...

...ot;flip"} )%> <div id="img"></div> controller: def flip filename="/public/picture/filename/1/scaler_1.jpg" img=File.read(filename) ilist = Magick::ImageList.new @picture=ilist.from_blob(img) @picthumb=@picture.flip! @out=@picthumb.to_blob send_data(@out,:filename =>''workshopimage'', :type => "image/png", :disposition => "inline") end the above doesnt work but with my view as <%= link_to("flip", :action => "flip" )%> it works....so doesnt it me...

I am using rmagick to convert files stored as a tiff to either pdf or jpg for display to the user. A snippet of test code from the controller follows. It works OK. ( it does need a sanitizer ) require RMagick def pdf @sdoc = Sdoc.find(params[:id]) @fname = ''/var/www/images/'' + @sdoc.fname @nf = Magick::ImageList.new(@fname)

...g.data("Oranges", [4, 8, 7, 9, 8, 9]) g.data("Watermelon", [2, 3, 1, 5, 6, 8]) g.data("Peaches", [9, 9, 10, 8, 7, 9]) g.labels = {0 => ''2003'', 2 => ''2004'', 4 => ''2005''} send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "chart.png") Firstly, does this code look right for a controller method? Secondly, should this work at all on Windows? In a separate rhtml page i...

...crumpets_to_date << Crumpets.count("created_on < ''#{date_sql_string}''").to_i labels[days-day] = date_stamp.strftime("%b %d") if day % 3 == 0 end g.data("Crumpets Sold", crumpets_to_date) g.labels = labels send_data(g.to_blob, :disposition => ''inline'', :type => ''image/png'', :filename => "crumpets_over_time.png") end How do i display this graph in the view??? <img src="/blog/crumpetchartaction"/> -- Posted via http://www.ruby-forum.com/.

...uot;lg" img.strip!.change_geometry("640x480>") { |cols, rows, img| img.resize!(cols, rows) } else raise "Unknown image type ''#{self.image_type}''" end self.width = img.columns self.height = img.rows self.image = img.to_blob img = nil GC.start end What stupidity have I done here? Thanks, Matt.

Hi, I am looking for the best solution to resize images to fit within a certain area. The images will only be made smaller if they will not fit within a fixed size area. It is important to maintain the same proportions. This ImageMagick extension looks promising: http://vantulder.net/rails/magick/ However, I believe it may be overkill for just resizing images sometimes. I have also seen a

Greetings all, This is the first release of the SuperImage plugin. The idea is you upload images to the database, and then pull them out at any size you want. Combine this with caching and it will stay light and fast. More info and instructions are here: http://beautifulpixel.textdriven.com/articles/2006/04/27/superimage-plugin-making-resizeable-uploaded-images-easy svn:

Hi, I need to take a single uploaded image file and save three resized versions of it, a thumbnail, normal and large version. I was planning on doing this in my model by having an array of geometry strings and looping through them, each time saving a new image object resized to the correct geometry. I know that file column does similar stuff, but I would prefer to have a separate database row