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[Rails] MySQL lock_tables
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| def lock_tables(tables) | |
| pair = tables.map { |table, type| '%s %s' % [table, type.to_s.upcase] } | |
| ActiveRecord::Base.connection.execute 'LOCK TABLES %s' % pair.join(', ') | |
| yield | |
| ensure | |
| ActiveRecord::Base.connection.execute 'UNLOCK TABLES' | |
| end | |
| lock_tables users: :read, blogs: :write do | |
| # do something | |
| end |
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