Class: Quandl::Database
- Includes:
- Operations::Get, Operations::List
- Defined in:
- lib/quandl/model/database.rb
Instance Method Summary collapse
- #bulk_download_path ⇒ Object
- #bulk_download_to_file(file_or_folder_path, options = {}) ⇒ Object
- #bulk_download_url(options = {}) ⇒ Object
- #datasets(options = {}) ⇒ Object
Methods inherited from ModelBase
#column_names, #data_fields, #initialize, #inspect, #to_a
Constructor Details
This class inherits a constructor from Quandl::ModelBase
Dynamic Method Handling
This class handles dynamic methods through the method_missing method in the class Quandl::ModelBase
Instance Method Details
#bulk_download_path ⇒ Object
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# File 'lib/quandl/model/database.rb', line 25 def bulk_download_path path = self.class.default_path + '/data' path = Quandl::Util.constructed_path(path, id: database_code) path end |
#bulk_download_to_file(file_or_folder_path, options = {}) ⇒ Object
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# File 'lib/quandl/model/database.rb', line 31 def bulk_download_to_file(file_or_folder_path, = {}) raise(QuandlError, 'You must specific a file handle or folder to write to.') if file_or_folder_path.blank? # Retrieve the location of the bulk download url path = bulk_download_path download_url = Quandl::Connection.request(:get, path, ) do |response, _request, _result, &_block| if response.code == 302 response.headers[:location] else Quandl::Connection.handle_api_error(response) if response && response.body raise(QuandlError, 'Unexpected result when fetching bulk download URI.') end end uri = URI.parse(download_url) # Check that we can write to the directory file = file_or_folder_path unless file_or_folder_path.is_a?(File) if File.directory?(file_or_folder_path) file_or_folder_path = Pathname.new(file_or_folder_path.to_s).join(File.basename(uri.path)) end file = File.open(file_or_folder_path, 'wb') end # Download the file begin http = Net::HTTP.new(uri.host, uri.port) http.use_ssl = (uri.scheme == 'https') http.request_get(uri.request_uri) do |resp| resp.read_body do |segment| file.write(segment) end end ensure file.close end file.path end |
#bulk_download_url(options = {}) ⇒ Object
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# File 'lib/quandl/model/database.rb', line 10 def bulk_download_url( = {}) .assert_valid_keys(:params) url = bulk_download_path url = Quandl::ApiConfig.api_base + '/' + url url = Quandl::Util.constructed_path(url, id: database_code) params = [:params] || {} params['api_key'] = Quandl::ApiConfig.api_key if Quandl::ApiConfig.api_key params['api_version'] = Quandl::ApiConfig.api_version if Quandl::ApiConfig.api_version url += '?' + params.to_query if params.any? url end |