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Contents
# frozen_string_literal: true
module Decidim
module ContentParsers
# A parser that searches specific tags in the content. This is an abstract
# class that provides some helper methods for parsing the content and the
# implementation has to be defined by all the classes that inherit from this
# class.
#
# @see BaseParser Examples of how to use a content parser
class TagParser < BaseParser
# Replaces tags name with new or existing tags models global ids.
#
# The actual tags depend on the context, these can be hashtags, user
# mentions, user group mentions, etc.
#
# @return [String] the content with the tags replaced by global ids
def rewrite
if html_content?
html_fragment.search("span[data-type='#{tag_data_type}']").each do |el|
el.replace replace_tags(element_tag(el))
end
html_fragment.to_s
else
replace_tags(content)
end
end
protected
def tag_data_type
raise NotImplementedError, "#{self.class.name} does not define tag_data_type"
end
def replace_tags(text)
raise NotImplementedError, "#{self.class.name} does not define replace_tags"
end
def scan_tags(text)
raise NotImplementedError, "#{self.class.name} does not define scan_tags"
end
def element_tag(element)
element["data-id"] || element["data-label"] || element.content
end
def content_tags
@content_tags ||= begin
scannables =
if html_content?
html_fragment.search("span[data-type='#{tag_data_type}']").map do |el|
element_tag(el)
end
else
[content]
end
scannables.map { |str| scan_tags(str) }.flatten.uniq
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems