module ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting

Public Instance Methods

escape_bytea(value) click to toggle source

Escapes binary strings for bytea input to the database.

# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 6
def escape_bytea(value)
  @connection.escape_bytea(value) if value
end
quote_schema_name(name) click to toggle source

Quotes schema names for use in SQL queries.

# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 35
def quote_schema_name(name)
  PGconn.quote_ident(name)
end
quote_table_name_for_assignment(table, attr) click to toggle source
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 39
def quote_table_name_for_assignment(table, attr)
  quote_column_name(attr)
end
unescape_bytea(value) click to toggle source

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.

# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 13
def unescape_bytea(value)
  @connection.unescape_bytea(value) if value
end

Private Instance Methods

_quote(value) click to toggle source
Calls superclass method
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 77
def _quote(value)
  case value
  when Type::Binary::Data
    "'#{escape_bytea(value.to_s)}'"
  when OID::Xml::Data
    "xml '#{quote_string(value.to_s)}'"
  when OID::Bit::Data
    if value.binary?
      "B'#{value}'"
    elsif value.hex?
      "X'#{value}'"
    end
  when Float
    if value.infinite? || value.nan?
      "'#{value}'"
    else
      super
    end
  else
    super
  end
end
_type_cast(value) click to toggle source
Calls superclass method
# File lib/active_record/connection_adapters/postgresql/quoting.rb, line 100
def _type_cast(value)
  case value
  when Type::Binary::Data
    # Return a bind param hash with format as binary.
    # See http://deveiate.org/code/pg/PGconn.html#method-i-exec_prepared-doc
    # for more information
    { value: value.to_s, format: 1 }
  when OID::Xml::Data, OID::Bit::Data
    value.to_s
  else
    super
  end
end