method
configure_connection
v4.2.1 -
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Class: AbstractMysqlAdapter
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configure_connection()
private
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# File activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb, line 825 def configure_connection variables = @config.fetch(:variables, {}).stringify_keys # By default, MySQL 'where id is null' selects the last inserted id. # Turn this off. http://dev.rubyonrails.org/ticket/6778 variables['sql_auto_is_null'] = 0 # Increase timeout so the server doesn't disconnect us. wait_timeout = @config[:wait_timeout] wait_timeout = 2147483 unless wait_timeout.is_a?(Fixnum) variables['wait_timeout'] = self.class.type_cast_config_to_integer(wait_timeout) # Make MySQL reject illegal values rather than truncating or blanking them, see # http://dev.mysql.com/doc/refman/5.0/en/server-sql-mode.html#sqlmode_strict_all_tables # If the user has provided another value for sql_mode, don't replace it. unless variables.has_key?('sql_mode') variables['sql_mode'] = strict_mode? ? 'STRICT_ALL_TABLES' : '' end # NAMES does not have an equals sign, see # http://dev.mysql.com/doc/refman/5.0/en/set-statement.html#id944430 # (trailing comma because variable_assignments will always have content) if @config[:encoding] encoding = "NAMES #{@config[:encoding]}" encoding << " COLLATE #{@config[:collation]}" if @config[:collation] encoding << ", " end # Gather up all of the SET variables... variable_assignments = variables.map do |k, v| if v == ':default' || v == :default "@@SESSION.#{k} = DEFAULT" # Sets the value to the global or compile default elsif !v.nil? "@@SESSION.#{k} = #{quote(v)}" end # or else nil; compact to clear nils out end.compact.join(', ') # ...and send them all in one query @connection.query "SET #{encoding} #{variable_assignments}" end