W3cubDocs

module ActiveRecord::ConnectionAdapters::Quoting

Public Instance Methods

# 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

Quotes the column value to help prevent SQL injection attacks.

quote_column_name(column_name) Show source

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

Quotes the column name. Defaults to no quoting.

quote_string(s) Show source

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

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

quote_table_name(table_name) Show source

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 72
def quote_table_name(table_name)
  quote_column_name(table_name)
end

Quotes the table name. Defaults to column name quoting.

quote_table_name_for_assignment(table, attr) Show source

# 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

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).

quoted_date(value) Show source

# 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

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

quoted_false() Show source

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 105
def quoted_false
  "FALSE"
end

quoted_true() Show source

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 97
def quoted_true
  "TRUE"
end

type_cast(value, column = nil) Show source

# 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

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.

unquoted_false() Show source

# File activerecord/lib/active_record/connection_adapters/abstract/quoting.rb, line 109
def unquoted_false
  false
end

unquoted_true() Show source

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