instiki/app/models/wiki_reference.rb

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class WikiReference < ActiveRecord::Base
LINKED_PAGE = 'L'
WANTED_PAGE = 'W'
REDIRECTED_PAGE = 'R'
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INCLUDED_PAGE = 'I'
CATEGORY = 'C'
AUTHOR = 'A'
FILE = 'F'
WANTED_FILE = 'E'
belongs_to :page
validates_inclusion_of :link_type, :in => [LINKED_PAGE, WANTED_PAGE, REDIRECTED_PAGE, INCLUDED_PAGE, CATEGORY, AUTHOR, FILE, WANTED_FILE]
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def referenced_name
read_attribute(:referenced_name).as_utf8
end
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def self.link_type(web, page_name)
if web.has_page?(page_name) || self.page_that_redirects_for(web, page_name)
LINKED_PAGE
else
WANTED_PAGE
end
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end
def self.pages_that_reference(web, 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}') " +
"AND pages.web_id = '#{web.id}'"
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names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_that_link_to(web, 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}') " +
"AND pages.web_id = '#{web.id}'"
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names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_that_link_to_file(web, file_name)
query = 'SELECT name FROM pages JOIN wiki_references ' +
'ON pages.id = wiki_references.page_id ' +
'WHERE wiki_references.referenced_name = ? ' +
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"AND wiki_references.link_type in ('#{FILE}','#{WANTED_FILE}') " +
"AND pages.web_id = '#{web.id}'"
names = connection.select_all(sanitize_sql([query, file_name])).map { |row| row['name'] }
end
def self.pages_that_include(web, 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}' " +
"AND pages.web_id = '#{web.id}'"
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names = connection.select_all(sanitize_sql([query, page_name])).map { |row| row['name'] }
end
def self.pages_redirected_to(web, page_name)
names = []
redirected_pages = []
page = web.page(page_name)
redirected_pages.concat page.redirects
redirected_pages.concat Thread.current[:page_redirects][page] if
Thread.current[:page_redirects] && Thread.current[:page_redirects][page]
redirected_pages.uniq.each { |name| names.concat self.pages_that_reference(web, name) }
names.uniq
end
def self.page_that_redirects_for(web, 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 = '#{REDIRECTED_PAGE}' " +
"AND pages.web_id = '#{web.id}'"
row = connection.select_one(sanitize_sql([query, page_name]))
row['name'].as_utf8 if row
end
def self.pages_in_category(web, category)
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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}' " +
"AND pages.web_id = '#{web.id}'"
names = connection.select_all(sanitize_sql([query, category])).map { |row| row['name'].as_utf8 }
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end
def self.list_categories(web)
query = "SELECT DISTINCT wiki_references.referenced_name " +
"FROM wiki_references LEFT OUTER JOIN pages " +
"ON wiki_references.page_id = pages.id " +
"WHERE wiki_references.link_type = '#{CATEGORY}' " +
"AND pages.web_id = '#{web.id}'"
connection.select_all(query).map { |row| row['referenced_name'].as_utf8 }
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end
def wiki_word?
linked_page? or wanted_page?
end
def wiki_link?
linked_page? or wanted_page? or file? or wanted_file?
end
def linked_page?
link_type == LINKED_PAGE
end
def redirected_page?
link_type == REDIRECTED_PAGE
end
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def wanted_page?
link_type == WANTED_PAGE
end
def included_page?
link_type == INCLUDED_PAGE
end
def file?
link_type == FILE
end
def wanted_file?
link_type == WANTED_FILE
end
def category?
link_type == CATEGORY
end
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end