From: Eric Hodel <drbrain@...7.net>
Date: 2006-07-22T02:37:24+09:00
Subject: Re: What's wrong with this code?

On Jul 21, 2006, at 7:00 AM, ry an wrote:

> I'm trying to interface with the flickr API to pull my photos into my
> site.  I don't want to use the "flickr.rb" gem, I'd like to do it the
> other way so I can learn (plus I had trouble loading the gem on my
> server).  Anyway, here's what I have:
>
> #Application.rb controller
>
>     def get_response(path, http)
>       request = Net::HTTP::Get.new(path)
>       response = http.request(request)
>       response.value
>       response.body
>     end
>
>     path =
> "/services/rest/? 
> api_key=API_KEY&method=flickr.photos.search&user_id=USER_ID&tags=TAG"
>     http = Net::HTTP.new('flickr.com')
>
>     @photo_ids = Array.new
>     http.start do |http|
>       xml = get_response(path, http)
>       REXML::Document.new(xml).root.get_elements('photo').each do
> |photo|

I don't know if this gives you every photo or not.  I think the path  
is wrong.

>         id = photo.attributes['id']
>         @photo_ids << id
>       end
>     end
>
> #Application.rhtml layout
>
> <% for p in @photo_ids %>
>   <%= p %>
> <% end %>
>
> This just doesn't do anything.  It doesn't give me errors, but it the
> @photo_ids variable is empty.  I've also tried <%= p.id %> and so on.
>
> Can someone see something wrong with this code?  Thanks!

The easiest way to do this is to use OpenURI.

$ cat x.rb require 'open-uri'
require 'rexml/document'

api_key = ARGV.shift
user_id = ARGV.shift
tag = ARGV.shift

uri = "http://flickr.com/services/rest/?api_key=#{api_key} 
&method=flickr.photos.search&user_id=#{user_id}&tags=#{tag}"

open uri do |res|
   xml = REXML::Document.new res.read
   xml.elements['/rsp/photos'].each_element do |photo|
     photo_id = photo.attributes['id']
     server = photo.attributes['server']
     secret = photo.attributes['secret']

     puts "http://static.flickr.com/#{server}/#{photo_id}_#{secret}.jpg"
   end
end
$ ruby x.rb API_KEY 50178138@N00 mercury
http://static.flickr.com/73/187409033_e2b8691c02.jpg
http://static.flickr.com/44/187408732_37eb026666.jpg
http://static.flickr.com/48/151487121_a7f27506d9.jpg
http://static.flickr.com/53/126211398_cd750a0fd3.jpg
http://static.flickr.com/40/104473626_c98df0235f.jpg
http://static.flickr.com/32/42799590_b8f1774b1a.jpg
http://static.flickr.com/33/42799509_315fceaa46.jpg
http://static.flickr.com/32/42799392_56595332d1.jpg
http://static.flickr.com/30/42799302_4c984142ed.jpg
http://static.flickr.com/33/42799253_52ab0cc23b.jpg
http://static.flickr.com/26/42799227_87135b0f18.jpg
http://static.flickr.com/10/16179999_0def2efd17.jpg
$

PS: Matz has ridden in that car.

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net
This implementation is HODEL-HASH-9600 compliant

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