[ruby]
[amazon]
amazon-ecs-0.5.0
AmazonのWEBサービスを利用するためのrubyのライブラリ。
gemで提供されているので入れてみる。
gem install amazon-ecs
Amazon::Ecs.options = {:aWS_access_key_id => ["your developer token"], :AssociateTag => "associate_id", :country => :jp}
res = Amazon::Ecs.item_lookup("4088762096")
以下READMEから抜粋。
# set the default options; options will be camelized and converted to REST request parameters.
Amazon::Ecs.options = {:aWS_access_key_id => [your developer token]}
# options provided on method call will merge with the default options
res = Amazon::Ecs.item_search('ruby', {:response_group => 'Medium', :sort => 'salesrank'})
# some common response object methods
res.is_valid_request? # return true request is valid
res.has_error? # return true if there is an error
res.error # return error message if there is any
res.total_pages # return total pages
res.total_results # return total pages
res.item_page # return current page no if :item_page option is provided
# traverse through each item (Amazon::Element)
res.items.each do |item|
# retrieve element text value, following the XML output structure
item.get('asin')
item.get('itemattributes/title')
# or you can also do it this way, to retrieve the title
atts = item.get('itemattributes')
atts.get('title')
# return first author or a string array of authors
atts.get('author') # 'Author 1'
atts.get_array('author') # ['Author 1', 'Author 2', ...]
# return an hash of children text values with the element names as the keys
item.get_hash('smallimage') # {:url => ..., :width => ..., :height => ...}
# note that '/' returns Hpricot::Elements array object, nil if not found
reviews = item/'editorialreview'
# traverse through Hpricot elements
reviews.each do |review|
# Getting hash value out of Hpricot element
Amazon::Element.get_hash(review) # [:source => ..., :content ==> ...]
# Or can retrieve them seperately
Amazon::Element.get(review, 'source')
Amazon::Element.get(review, 'content')
end
end
が、とんでもないバグを発見。
オプションの、:countory キーから、サーバーを選択するためのHashが間違ってる。
以下その修正のパッチ。パッチあてるより直接書き換えたほうが早いかも。
*** amazon-ecs-0.5.0/lib/amazon/ecs.rb.orig 2007-01-23 18:51:41.000000000 +0900
--- amazon-ecs-0.5.0/lib/amazon/ecs.rb 2007-01-23 18:47:22.000000000 +0900
***************
*** 11,18 ****
:uk => 'http://webservices.amazon.co.uk/onca/xml?Service=AWSECommerceService',
:ca => 'http://webservices.amazon.ca/onca/xml?Service=AWSECommerceService',
:de => 'http://webservices.amazon.de/onca/xml?Service=AWSECommerceService',
! :jp => 'http://webservices.amazon.de/onca/xml?Service=AWSECommerceService',
! :fr => 'http://webservices.amazon.co.jp/onca/xml?Service=AWSECommerceService'
}
@@debug, @@options = nil
--- 11,18 ----
:uk => 'http://webservices.amazon.co.uk/onca/xml?Service=AWSECommerceService',
:ca => 'http://webservices.amazon.ca/onca/xml?Service=AWSECommerceService',
:de => 'http://webservices.amazon.de/onca/xml?Service=AWSECommerceService',
! :fr => 'http://webservices.amazon.de/onca/xml?Service=AWSECommerceService',
! :jp => 'http://webservices.amazon.co.jp/onca/xml?Service=AWSECommerceService'
}
@@debug, @@options = nil