add_lock!(sql, options) — ActiveRecord::ConnectionAdapters::DatabaseStatements

add_lock!(sql, options)

Appends a locking clause to an SQL statement. This method modifies the sql parameter.

# SELECT * FROM suppliers FOR UPDATE
add_lock! 'SELECT * FROM suppliers', :lock => true
add_lock! 'SELECT * FROM suppliers', :lock => ' FOR UPDATE'

Parameters

sql req
options req

Source

# File activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb, line 128
      def add_lock!(sql, options)
        case lock = options[:lock]
          when true;   sql << ' FOR UPDATE'
          when String; sql << " #{lock}"
        end
      end

Defined in activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb line 128 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveRecord::ConnectionAdapters::DatabaseStatements

Signature

Parameters