module ActiveRecord module ConnectionAdapters # :nodoc: module Quoting # Quotes the column value to help prevent # {SQL injection attacks}[http://en.wikipedia.org/wiki/SQL_injection]. def quote(value, column = nil) # records are quoted as their primary key return value.quoted_id if value.respond_to?(:quoted_id) case value when String, ActiveSupport::Multibyte::Chars value = value.to_s if column && column.type == :binary && column.class.respond_to?(:string_to_binary) "'#{quote_string(column.class.string_to_binary(value))}'" # ' (for ruby-mode) elsif column && [:integer, :float].include?(column.type) value = column.type == :integer ? value.to_i : value.to_f value.to_s else "'#{quote_string(value)}'" # ' (for ruby-mode) end when NilClass then "NULL" when TrueClass then (column && column.type == :integer ? '1' : quoted_true) when FalseClass then (column && column.type == :integer ? '0' : quoted_false) when Float, Fixnum, Bignum then value.to_s # BigDecimals need to be output in a non-normalized form and quoted. when BigDecimal then value.to_s('F') when Date then "'#{value.to_s}'" when Time, DateTime then "'#{quoted_date(value)}'" else "'#{quote_string(value.to_yaml)}'" end end # Quotes a string, escaping any ' (single quote) and \ (backslash) # characters. def quote_string(s) s.gsub(/\\/, '\&\&').gsub(/'/, "''") # ' (for ruby-mode) end # Returns a quoted form of the column name. This is highly adapter # specific. def quote_column_name(name) name end def quoted_true "'t'" end def quoted_false "'f'" end def quoted_date(value) value.strftime("%Y-%m-%d %H:%M:%S") end end end end