Module: MysqlOnlineMigrations

Includes:
Columns, Indexes
Defined in:
lib/mysql_online_migrations.rb,
lib/mysql_online_migrations/columns.rb,
lib/mysql_online_migrations/indexes.rb

Defined Under Namespace

Modules: Columns, Indexes

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Columns

#add_column, #add_timestamps, #change_column, #remove_column, #remove_timestamps, #rename_column

Methods included from Indexes

#add_index, #remove_index, #rename_index

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/mysql_online_migrations.rb', line 12

def self.included(base)
  ActiveRecord::Base.send(:class_attribute, :mysql_online_migrations, :instance_writer => false)
  ActiveRecord::Base.send("mysql_online_migrations=", true)
end

Instance Method Details

#extract_lock_from_options(options) ⇒ Object 



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# File 'lib/mysql_online_migrations.rb', line 24

def extract_lock_from_options(options)
  [options[:lock], options.except(:lock)]
end

#lock_statement(lock, with_comma = false) ⇒ Object 



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# File 'lib/mysql_online_migrations.rb', line 17

def lock_statement(lock, with_comma = false)
  return "" if lock == true
  return "" unless perform_migrations_online?
  puts "ONLINE MIGRATION"
  "#{with_comma ? ', ' : ''} LOCK=NONE"
end

#perform_migrations_online? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mysql_online_migrations.rb', line 28

def perform_migrations_online?
  ActiveRecord::Base.mysql_online_migrations == true
end