Rails - Apr 2009 - How to find out image width and height which is saved in database?

How to find out image width and height which is saved in database,
with out using any applications or addons Please help
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On Apr 3, 2009, at 6:15 AM, seenu wrote:
>
> How to find out image width and height which is saved in database,
> with out using any applications or addons Please help
You could do what I did:  http://gist.github.com/89738

Then you can do things like:

irb> require ''image_size''
=> true
irb>
x=ImageSize.of_file(''/Users/rab/Pictures/Boston_MIT_8L4L2442.jpg'')
=> #<ImageSize:0x32df98 @height=678, @image=#<File:/Users/rab/Pictures/
Boston_MIT_8L4L2442.jpg (closed)>, @width=1024,  
@jpeg_dimension_segment="\377\300\000\021\b 
\002\246\004\000\003\001\"\000\002\021\001\003\021\001",  
@header="\377\330\377\340\000\020JFIF\000\001\001\001\000`\000` 
\000\000\377\333\000C\000\006\004\005\006\005\004\006\006\005\006\a\a 
\006\b\n\020\n\n\t\t\n\024\016\017\f 
\020\027\024\030\030\027\024\026\026\032\035%\037\032\e#\034\026\026 ,  
#&'')*)\031\037-0-(0%()(\377\333\000C\001\a\a\a\n\b\n\023\n\n 
\023 
(\032 
\026 
\032 
((((((((((((((((((((((((((((((((((((((((((((((((((\377\300\000\021\b 
\002\246\004\000\003\001\"\000\002\021\001\003\021\001\377\304",  
@image_type=:jpeg>
irb> x.width
=> 1024
irb> x.height
=> 678
irb> x.dimensions
=> [1024, 678]
irb> x.size
=> "1024x678"
irb> x.content_type
=> "image/jpeg"

Well, unless you consider that an addon, of course.

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob-xa9cJyRlE0mWcWVYNo9pwxS2lgjeYSpx@public.gmane.org



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