Sha256: a01662b1343927c3bf9e01f89e608b9b22686614c9725ba056eb5d369b968dcf
Contents?: true
Size: 1.35 KB
Versions: 6
Compression:
Stored size: 1.35 KB
Contents
# frozen_string_literal: true
module Html2rss
module ItemExtractors
##
# Returns the value of the attribute.
#
# Imagine this +time+ HTML tag with a +datetime+ attribute:
#
# <time datetime="2019-07-01">...</time>
#
# YAML usage example:
#
# selectors:
# link:
# selector: time
# extractor: attribute
# attribute: datetime
#
# Would return:
# '2019-07-01'
#
# In case you're extracting a date or a time, consider parsing it
# during post processing with {AttributePostProcessors::ParseTime}.
class Attribute
# The available options for the attribute extractor.
Options = Struct.new('AttributeOptions', :selector, :attribute, keyword_init: true)
##
# Initializes the Attribute extractor.
#
# @param xml [Nokogiri::XML::Element]
# @param options [Options]
def initialize(xml, options)
@options = options
@element = ItemExtractors.element(xml, options.selector)
end
##
# Retrieves and returns the attribute's value as a string.
#
# @return [String] The value of the attribute.
def get
@element.attr(@options.attribute).to_s.freeze
rescue NoMethodError => error
raise "Failed to extract attribute: #{error.message}"
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems