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# frozen_string_literal: true
module Decidim
module ContentParsers
# A parser that searches user mentions in content.
#
# A word starting with `@` will be considered as a possible mention if
# they only contains letters, numbers or underscores. If the `@` is
# followed with an underscore, then it is not considered.
#
# @see BaseParser Examples of how to use a content parser
class UserParser < BaseParser
# Class used as a container for metadata
#
# @!attribute users
# @return [Array] an array of Decidim::User mentioned in content
Metadata = Struct.new(:users)
# Matches a nickname if they start with a letter or number
# and only contains letters, numbers or underscores.
MENTION_REGEX = /(^|\s)@([a-zA-Z0-9]\w*)/
# Replaces found mentions matching a nickname of an existing
# user in the current organization with a global id. Other
# mentions found that doesn't match an existing user are
# returned as is.
#
# @return [String] the content with the valid mentions replaced by a global id
def rewrite
content.gsub(MENTION_REGEX) do |match|
if (user = Decidim::User.find_by(nickname: Regexp.last_match[2], organization: context[:current_organization]))
Regexp.last_match[1] + user.to_global_id.to_s
else
match
end
end
end
# (see BaseParser#metadata)
def metadata
Metadata.new(
Decidim::User.where(nickname: content.scan(MENTION_REGEX).flatten, organization: context[:current_organization])
)
end
end
end
end
Version data entries
17 entries across 17 versions & 1 rubygems