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Methods
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Instance Public methods
quote(value)

Quotes the column value to help prevent SQL injection attacks.

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 9
def quote(value)
  value = id_value_for_database(value) if value.is_a?(Base)

  if value.respond_to?(:quoted_id)
    at = value.method(:quoted_id).source_location
    at &&= " at %s:%d" % at

    owner = value.method(:quoted_id).owner.to_s
    klass = value.class.to_s
    klass += "(#{owner})" unless owner == klass

    ActiveSupport::Deprecation.warn              "Defining #quoted_id is deprecated and will be ignored in Rails 5.2. (defined on #{klass}#{at})"
    return value.quoted_id
  end

  _quote(value)
end
quote_column_name(column_name)

Quotes the column name. Defaults to no quoting.

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 78
def quote_column_name(column_name)
  column_name.to_s
end
quote_string(s)

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

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 73
def quote_string(s)
  s.gsub('\'.freeze, '\&\&'.freeze).gsub("'".freeze, "''".freeze) # ' (for ruby-mode)
end
quote_table_name(table_name)

Quotes the table name. Defaults to column name quoting.

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 83
def quote_table_name(table_name)
  quote_column_name(table_name)
end
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).

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 95
def quote_table_name_for_assignment(table, attr)
  quote_table_name("#{table}.#{attr}")
end
quoted_date(value)

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

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 126
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
quoted_false()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 116
def quoted_false
  "'f'".freeze
end
quoted_true()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 108
def quoted_true
  "'t'".freeze
end
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.

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 31
def type_cast(value, column = nil)
  value = id_value_for_database(value) if value.is_a?(Base)

  if value.respond_to?(:quoted_id) && value.respond_to?(:id)
    return value.id
  end

  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
unquoted_false()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 120
def unquoted_false
  "f".freeze
end
unquoted_true()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 112
def unquoted_true
  "t".freeze
end