method

unescape_bytea

v2.3.8 - Show latest stable - 0 notes - Class: ActiveRecord::ConnectionAdapters::PostgreSQLAdapter

unescape_bytea(original_value) public

Unescapes bytea output from a database to the binary string it represents. NOTE: This is NOT an inverse of escape_bytea! This is only to be used

      on escaped binary output from database drive.

Show source

# File activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb, line 323
      def unescape_bytea(original_value)
        # In each case, check if the value actually is escaped PostgreSQL bytea output
        # or an unescaped Active Record attribute that was just written.
        if @connection.respond_to?(:unescape_bytea)
          self.class.instance_eval do
            define_method(:unescape_bytea) do |value|
              @connection.unescape_bytea(value) if value
            end
          end
        elsif PGconn.respond_to?(:unescape_bytea)
          self.class.instance_eval do
            define_method(:unescape_bytea) do |value|
              PGconn.unescape_bytea(value) if value
            end
          end
        else
          raise 'Your PostgreSQL connection does not support unescape_bytea. Try upgrading to pg 0.9.0 or later.'
        end
        unescape_bytea(original_value)
      end

unescape_bytea

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