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Contents
module Feedzirra
module FeedUtilities
UPDATABLE_ATTRIBUTES = %w(title feed_url url last_modified)
attr_writer :new_entries, :updated, :last_modified
attr_accessor :etag
def last_modified
@last_modified ||= begin
entry = entries.reject {|e| e.published.nil? }.sort_by { |entry| entry.published if entry.published }.last
entry ? entry.published : nil
end
end
def updated?
@updated
end
def new_entries
@new_entries ||= []
end
def has_new_entries?
new_entries.size > 0
end
def update_from_feed(feed)
self.new_entries += find_new_entries_for(feed)
self.entries.unshift(*self.new_entries)
updated! if UPDATABLE_ATTRIBUTES.any? { |name| update_attribute(feed, name) }
end
def update_attribute(feed, name)
old_value, new_value = send(name), feed.send(name)
if old_value != new_value
send("#{name}=", new_value)
end
end
def sanitize_entries!
entries.each {|entry| entry.sanitize!}
end
private
def updated!
@updated = true
end
def find_new_entries_for(feed)
# this implementation is a hack, which is why it's so ugly.
# it's to get around the fact that not all feeds have a published date.
# however, they're always ordered with the newest one first.
# So we go through the entries just parsed and insert each one as a new entry
# until we get to one that has the same url as the the newest for the feed
latest_entry = self.entries.first
found_new_entries = []
feed.entries.each do |entry|
break if entry.url == latest_entry.url
found_new_entries << entry
end
found_new_entries
end
def existing_entry?(test_entry)
entries.any? { |entry| entry.url == test_entry.url }
end
end
end
Version data entries
88 entries across 88 versions & 26 rubygems