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Methods
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Instance Public methods
fetch_type_metadata(sql_type)
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 66
def fetch_type_metadata(sql_type)
  cast_type = lookup_cast_type(sql_type)
  SqlTypeMetadata.new(
    sql_type: sql_type,
    type: cast_type.type,
    limit: cast_type.limit,
    precision: cast_type.precision,
    scale: cast_type.scale,
  )
end
quote(value, column = nil)

Quotes the column value to help prevent SQL injection attacks.

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 8
      def quote(value, column = nil)
        # records are quoted as their primary key
        return value.quoted_id if value.respond_to?(:quoted_id)

        if column
          ActiveSupport::Deprecation.warn("            Passing a column to `quote` has been deprecated. It is only used
            for type casting, which should be handled elsewhere. See
            https://github.com/rails/arel/commit/6160bfbda1d1781c3b08a33ec4955f170e95be11
            for more information.
".squish)
          value = type_cast_from_column(column, value)
        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 84
def quote_column_name(column_name)
  column_name
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 79
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 89
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 mysql and 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 101
def quote_table_name_for_assignment(table, attr)
  quote_table_name("#{table}.#{attr}")
end
quoted_date(value)
# 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 118
def quoted_false
  "'f'"
end
quoted_true()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 110
def quoted_true
  "'t'"
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 28
def type_cast(value, column = nil)
  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 122
def unquoted_false
  'f'
end
unquoted_true()
# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 114
def unquoted_true
  't'
end