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Contents
module ClosureTree
module DeterministicOrdering
extend ActiveSupport::Concern
module ClassAndInstanceMethods
def order_column
o = order_option
o.split(' ', 2).first if o
end
def require_order_column
raise ":order value, '#{order_option}', isn't a column" if order_column.nil?
end
def order_column_sym
require_order_column
order_column.to_sym
end
def quoted_order_column(include_table_name = true)
require_order_column
prefix = include_table_name ? "#{quoted_table_name}." : ""
"#{prefix}#{connection.quote_column_name(order_column)}"
end
end
include ClassAndInstanceMethods
module ClassMethods
include ClassAndInstanceMethods
end
def order_value
read_attribute(order_column_sym)
end
def order_value=(new_order_value)
write_attribute(order_column_sym, new_order_value)
end
def siblings_before
siblings.where(["#{quoted_order_column} < ?", order_value])
end
def siblings_after
siblings.where(["#{quoted_order_column} > ?", order_value])
end
end
end
Version data entries
47 entries across 47 versions & 2 rubygems