module ActiveRecord::ConnectionAdapters::PostgreSQL::Quoting - activerecord-4.2.4 Documentation

# 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_table_name(name) click to toggle source

Checks the following cases:

- table_name

- “table.name”

- schema_name.table_name

- schema_name.“table.name”

- “schema.name”.table_name

- “schema.name”.“table.name”

    # File lib/active_record/connection_adapters/postgresql/quoting.rb, line 30
    def quote_table_name(name)
      Utils.extract_schema_qualified_name(name.to_s).quoted
    end

quote_table_name_for_assignment(table, attr) click to toggle source

    # File lib/active_record/connection_adapters/postgresql/quoting.rb, line 34
    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 69
    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 92
    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