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Versions: 10
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Stored size: 1.58 KB
Contents
class Quandl::Client::Dataset::Data < Quandl::Client::Base
@_her_resource_path = "datasets/:id/data"
has_scope_composer
scope.class_eval do
delegate *Quandl::Client::Dataset::Data.forwardable_scope_methods, :to_h, to: :to_table, allow_nil: true
delegate *Quandl::Data.forwardable_methods, to: :to_table, allow_nil: true
end
scope *[:row, :rows, :limit, :offset, :accuracy, :column, :order,
:transform, :collapse, :exclude_headers]
scope :trim_start, ->(date){ date = parse_date(date); where( trim_start: date ) if date }
scope :trim_end, ->(date){ date = parse_date(date); where( trim_end: date ) if date }
scope_helper :parse_date, ->( value ){
begin
date = Date.jd(value.to_i) if value.kind_of?(String) && value.numeric?
date = Date.jd(value) if value.is_a?(Integer)
date = Date.parse(value) if value.is_a?(String) && value =~ /^[0-9]{4}\-[0-9]{2}\-[0-9]{2}$/
date = value if value.is_a?(Date)
date = value.to_date if value.respond_to?(:to_date)
date.to_s
rescue
nil
end
}
scope_helper :to_table, -> {
data = fetch_once.data
data.headers = fetch_once.column_names
data
}
attributes :id, :limit, :collapse, :transformation, :trim_start, :trim_end,
:rows, :row, :frequency, :data, :from_date, :to_date, :column_names
def data
read_data
end
def data=(value)
write_data(value)
end
protected
def read_data
Quandl::Data.new( read_attribute(:data) )
end
def write_data(value )
write_attribute(:data, Quandl::Data.new(value).to_csv )
end
end
Version data entries
10 entries across 10 versions & 1 rubygems