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barleysodas/app/models/page.rb

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##
# This is a representation of a page of the wiki. My wiki is awfully simple
# because i don't like too many features. This works and it has many different
# associations. All of the major models has_one of these and it belongs_to
# some kind of polymorphic owner.
#
# Bonuses:
# * Uses RedCloth markup.
# * Automatically converts/caches HTML
# * Allows any character or space in the name
# * Uses [[ and ]] for WikiWord representation.
#
class Page < ActiveRecord::Base
acts_as_versioned
belongs_to :owner, :polymorphic => true
validates_presence_of :title
validates_uniqueness_of :title, :scope => 'owner_type'
validates_format_of :title, :with => /[A-Za-z0-9 ]/,
:message => 'may only contain letters, numbers and spaces'
before_save :update_html
##
# Returns an url-friendly title for making links.
#
def title_for_url
self.title.gsub(/ /, '_')
end
##
# Gets a title from an url name.
#
def self.title_from_url(title)
title.to_s.gsub(/_/, ' ')
end
protected
##
# Updates the HTML chunk from the RedCloth source.
#
def update_html
# need to filter HTML first... remove <script> and chunks and the like...
res = RedCloth.new(self.redcloth.to_s.strip_tags, [ :no_span_caps ])
self.html = res.to_html(
# no link references. messes up lines starting with [[WikiWord]]
:block_textile_table, :block_textile_lists, :block_textile_prefix,
:inline_textile_image, :inline_textile_link, :inline_textile_code,
:inline_textile_span, :glyphs_textile)
end
end