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Ruby から Google Custom Search API を叩く

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ゴール

以下を Ruby から叩く

まず REST API を呼ぶまで

Gem から API を叩く

require 'google/apis/customsearch_v1'

# Doc: https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/CustomsearchV1/CustomSearchAPIService.html
searcher = Google::Apis::CustomsearchV1::CustomSearchAPIService.new
searcher.key = 'APIキー'

# Doc: https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/CustomsearchV1/Search.html
results = searcher.list_cses(cx: '検索エンジンID', q: '検索内容')

# Doc: https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/CustomsearchV1/Search/SearchInformation.html
results.search_information.total_results

# Doc: https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/CustomsearchV1/Result.html
items = results.items
items.first.title
items.first.snippet
items.first.link
# Doc: https://developers.google.com/custom-search/docs/structured_data#pagemaps
items.first.pagemap['cse_image'].first['src']
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