Class: ActiveWarehouse::Migrator

Inherits:
ActiveRecord::Migrator
  • Object
show all
Defined in:
lib/active_warehouse/migrations.rb

Overview

Responsible for migrating ActiveWarehouse tables which are automatically created.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.current_version ⇒ Object

:nodoc:



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# File 'lib/active_warehouse/migrations.rb', line 9

def current_version #:nodoc:
  result = ActiveRecord::Base.connection.select_one("SELECT version FROM #{schema_info_table_name}")
  if result
    result['version'].to_i
  else
    # There probably isn't an entry for this plugin in the migration info table.
    # We need to create that entry, and set the version to 0
    ActiveRecord::Base.connection.execute("INSERT INTO #{schema_info_table_name} (version) VALUES (0)")      
    0
  end
end

.schema_info_table_name ⇒ Object

:nodoc:



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# File 'lib/active_warehouse/migrations.rb', line 5

def schema_info_table_name #:nodoc:
  ActiveRecord::Base.table_name_prefix + 'activewarehouse_schema_info' + ActiveRecord::Base.table_name_suffix
end

Instance Method Details

#set_schema_version(version) ⇒ Object 



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# File 'lib/active_warehouse/migrations.rb', line 22

def set_schema_version(version)
  ActiveRecord::Base.connection.update("UPDATE #{self.class.schema_info_table_name} SET version = #{down? ? version.to_i - 1 : version.to_i}")
end