Class: PhilColumns::Migrator

Inherits:
Object
  • Object
show all
Includes:
Output, WithBackend
Defined in:
lib/phil_columns/migrator.rb

Instance Method Summary collapse

Methods included from WithBackend

included

Methods included from Output

#confirm, included, #say, #say_error, #say_ok, #say_skipping, #write

Constructor Details

#initialize(config) ⇒ Migrator

Returns a new instance of Migrator.



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# File 'lib/phil_columns/migrator.rb', line 7

def initialize( config )
  @backend = PhilColumns::migrator_klass.new
  @config  = config
end

Instance Method Details

#clear_migrations_table ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 12

def clear_migrations_table
  raise( *error ) unless backend_responds?( :clear_migrations_table )
  backend.send :clear_migrations_table
end

#down(version = 0) ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 17

def down( version=0 )
  raise( *error ) unless backend_responds?( :down )
  backend.send :down, version
end

#drop_table(table) ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 22

def drop_table( table )
  raise( *error ) unless backend_responds?( :drop_table )
  backend.send :drop_table, table
end

#drop_tables ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 27

def drop_tables
  raise( *error ) unless backend_responds?( :drop_tables )
  backend.send :drop_tables
end

#latest_version ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 32

def latest_version
  raise( *error ) unless backend_responds?( :latest_version )
  backend.send :latest_version
end

#load_schema ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 37

def load_schema
  raise( *error ) unless backend_responds?( :load_schema )
  backend.send :load_schema
end

#mulligan ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 42

def mulligan
  if config.schema_unload_strategy == 'drop'
    confirm "Dropping all tables ... ", :cyan do
      drop_tables
      clear_migrations_table
    end
  else
    confirm "Migrating DB to version 0 ... ", :cyan do
      down
    end
  end

  if config.schema_load_strategy == 'load'
    confirm "Loading schema ... ", :cyan do
      load_schema
    end
  else
    confirm "Migrating DB to latest version ... ", :cyan do
      up
    end
  end
end

#tables ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 65

def tables
  raise( *error ) unless backend_responds?( :tables )
  backend.send :tables
end

#up(version = nil) ⇒ Object 



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# File 'lib/phil_columns/migrator.rb', line 70

def up( version=nil )
  raise( *error ) unless backend_responds?( :up )
  backend.send :up, version
end