Rails - Apr 2007 - How to read image data offline without using the browser

Hi,

I uploaded a lot of images and resized them using RMagick and everything is
working fine.

Now I need to resize the existing images to some different dimenstion. In my
existing controller all the processing starts after I have
params[:image][:data] in my controller.

My question is how do I get the image data when I am reading the file. Does
anyone have an existing code to read an image and get something similar to
params[:image][:data] ready for processsing. I knwo how to read an ASCII
file but don''t know how to read an image file.

Thanks

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Raj Singh wrote:
> Hi,
> 
> I uploaded a lot of images and resized them using RMagick and everything 
> is
> working fine.
> 
> Now I need to resize the existing images to some different dimenstion. 
> In my
> existing controller all the processing starts after I have
> params[:image][:data] in my controller.
> 
> My question is how do I get the image data when I am reading the file. 
> Does
> anyone have an existing code to read an image and get something similar 
> to
> params[:image][:data] ready for processsing. I knwo how to read an ASCII
> file but don''t know how to read an image file.
> 
> Thanks
You can get an Magick::Image object that you can manipulate with a 
snippet like this:

  img = Magick::Image.read(''/path/to/file.jpg'').first
  img.crop_resized!(400, 300)

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