instiki/app/models/chunks/include.rb

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require 'chunks/wiki'
# Includes the contents of another page for rendering.
# The include command looks like this: "[[!include PageName]]".
# It is a WikiLink since it refers to another page (PageName)
# and the wiki content using this command must be notified
# of changes to that page.
# If the included page could not be found, a warning is displayed.
class Include < WikiChunk::WikiLink
def self.pattern() /^\[\[!include(.*)\]\]\s*$/i end
attr_reader :page_name
def initialize(match_data)
super(match_data)
@page_name = match_data[1].strip
end
# This replaces the [[!include PageName]] text with
# the contents of PageName if it exists. Otherwise
# a warning is displayed.
def mask(content)
page = content.web.pages[page_name]
(page ? page.content : "<em>Could not include #{page_name}</em>")
end
# Keep this chunk regardless of what happens.
def unmask(content) self end
end