Mango/migration/relative_path.8.cr

34 lines
882 B
Crystal

class RelativePath < MG::Base
def up : String
base = Config.current.library_path
# Escape single quotes in case the path contains them, and remove the
# trailing slash (this is a mistake, fixed in DB version 10)
base = base.gsub("'", "''").rstrip "/"
<<-SQL
-- update the path column in ids to relative paths
UPDATE ids
SET path = REPLACE(path, '#{base}', '');
-- update the path column in titles to relative paths
UPDATE titles
SET path = REPLACE(path, '#{base}', '');
SQL
end
def down : String
base = Config.current.library_path
base = base.gsub("'", "''").rstrip "/"
<<-SQL
-- update the path column in ids to absolute paths
UPDATE ids
SET path = '#{base}' || path;
-- update the path column in titles to absolute paths
UPDATE titles
SET path = '#{base}' || path;
SQL
end
end