instiki/app/models/wiki_reference.rb

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class WikiReference < ActiveRecord::Base
LINKED_PAGE = 'L'
WANTED_PAGE = 'W'
INCLUDED_PAGE = 'I'
CATEGORY = 'C'
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AUTHOR = 'A'
belongs_to :page
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validates_inclusion_of :link_type, :in => [LINKED_PAGE, WANTED_PAGE, INCLUDED_PAGE, CATEGORY, AUTHOR]
# FIXME all finders below MUST restrict their results to pages belonging to a particular web
def self.link_type(web, page_name)
web.has_page?(page_name) ? LINKED_PAGE : WANTED_PAGE
end
def self.pages_that_reference(page_name)
query = 'SELECT name FROM pages JOIN wiki_references ON pages.id = wiki_references.page_id ' +
'WHERE wiki_references.referenced_name = ?' +
"AND wiki_references.link_type in ('#{LINKED_PAGE}', '#{WANTED_PAGE}', '#{INCLUDED_PAGE}')"
names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_that_link_to(page_name)
query = 'SELECT name FROM pages JOIN wiki_references ON pages.id = wiki_references.page_id ' +
'WHERE wiki_references.referenced_name = ? ' +
"AND wiki_references.link_type in ('#{LINKED_PAGE}', '#{WANTED_PAGE}')"
names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_that_include(page_name)
query = 'SELECT name FROM pages JOIN wiki_references ON pages.id = wiki_references.page_id ' +
'WHERE wiki_references.referenced_name = ? ' +
"AND wiki_references.link_type = '#{INCLUDED_PAGE}'"
names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_in_category(category)
query = 'SELECT name FROM pages JOIN wiki_references ON pages.id = wiki_references.page_id ' +
'WHERE wiki_references.referenced_name = ? ' +
"AND wiki_references.link_type = '#{CATEGORY}'"
names = connection.select_all(sanitize_sql([query, category])).map { |row| row['name'] }
end
def self.list_categories
query = "SELECT DISTINCT referenced_name FROM wiki_references WHERE link_type = '#{CATEGORY}'"
connection.select_all(query).map { |row| row['referenced_name'] }
end
def wiki_link?
linked_page? or wanted_page?
end
def linked_page?
link_type == LINKED_PAGE
end
def wanted_page?
link_type == WANTED_PAGE
end
def included_page?
link_type == INCLUDED_PAGE
end
end