Class: Quandl::Data

Inherits:
ModelBase show all
Includes:
Operations::List
Defined in:
lib/quandl/model/data.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ModelBase

#data_fields, #inspect, #to_a

Constructor Details

#initialize(data, options = {}) ⇒ Data

Returns a new instance of Data.



20
21
22
23
24
 
# File 'lib/quandl/model/data.rb', line 20

def initialize(data, options = {})
  converted_column_names = options[:meta]['column_names'].map { |cn| Quandl::Util.methodize(cn) }
  @raw_data = Quandl::Util.convert_to_dates(Hash[converted_column_names.zip(data)])
  @meta = options[:meta]
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object (private) 



32
33
34
35
 
# File 'lib/quandl/model/data.rb', line 32

def method_missing(method_name, *args, &block)
  return @meta[method_name.to_s] if @meta.key?(method_name.to_s)
  super
end

Class Method Details

.create_list_from_response(_response, data) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
 
# File 'lib/quandl/model/data.rb', line 5

def self.create_list_from_response(_response, data)
  if data['dataset_data']['data'].length > 0 &&
     data['dataset_data']['column_names'].length != data['dataset_data']['data'].first.length
    fail InvalidDataError.new('number of column names does not match number of data points in a row!',
                              nil, nil, data)
  end
  values = data['dataset_data'].delete('data')
  metadata = data['dataset_data']
  Quandl::List.new(self, values, metadata)
end

.list_path ⇒ Object 



16
17
18
 
# File 'lib/quandl/model/data.rb', line 16

def self.list_path
  'datasets/:database_code/:dataset_code/data'
end

Instance Method Details

#column_names ⇒ Object 



26
27
28
 
# File 'lib/quandl/model/data.rb', line 26

def column_names
  @meta['column_names']
end