Methods

Instance Public methods

quote(value)

Quotes the column value to help prevent SQL injection attacks.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 11
      def quote(value)
        value = id_value_for_database(value) if value.is_a?(Base)

        if value.respond_to?(:value_for_database)
          value = value.value_for_database
        end

        _quote(value)
      end
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quote_column_name(column_name)

Quotes the column name. Defaults to no quoting.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 67
      def quote_column_name(column_name)
        column_name.to_s
      end
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quote_string(s)

Quotes a string, escaping any ' (single quote) and \ (backslash) characters.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 62
      def quote_string(s)
        s.gsub('\\'.freeze, '\&\&'.freeze).gsub("'".freeze, "''".freeze) # ' (for ruby-mode)
      end
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quote_table_name(table_name)

Quotes the table name. Defaults to column name quoting.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 72
      def quote_table_name(table_name)
        quote_column_name(table_name)
      end
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quote_table_name_for_assignment(table, attr)

Override to return the quoted table name for assignment. Defaults to table quoting.

This works for mysql2 where table.column can be used to resolve ambiguity.

We override this in the sqlite3 and postgresql adapters to use only the column name (as per syntax requirements).

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 84
      def quote_table_name_for_assignment(table, attr)
        quote_table_name("#{table}.#{attr}")
      end
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quoted_date(value)

Quote date/time values for use in SQL input. Includes microseconds if the value is a Time responding to usec.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 115
      def quoted_date(value)
        if value.acts_like?(:time)
          zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal

          if value.respond_to?(zone_conversion_method)
            value = value.send(zone_conversion_method)
          end
        end

        result = value.to_s(:db)
        if value.respond_to?(:usec) && value.usec > 0
          "#{result}.#{sprintf("%06d", value.usec)}"
        else
          result
        end
      end
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quoted_false()

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 105
      def quoted_false
        "FALSE".freeze
      end
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quoted_true()

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 97
      def quoted_true
        "TRUE".freeze
      end
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type_cast(value, column = nil)

Cast a value to a type that the database understands. For example, SQLite does not understand dates, so this method will convert a Date to a String.

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 24
      def type_cast(value, column = nil)
        value = id_value_for_database(value) if value.is_a?(Base)

        if column
          value = type_cast_from_column(column, value)
        end

        _type_cast(value)
      rescue TypeError
        to_type = column ? " to #{column.type}" : ""
        raise TypeError, "can't cast #{value.class}#{to_type}"
      end
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unquoted_false()

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 109
      def unquoted_false
        false
      end
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unquoted_true()

📝 Source code 
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 101
      def unquoted_true
        true
      end
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