Class: LazyMigrate::NewMigratorAdapter

Inherits:
MigratorAdapter show all
Extended by:
T::Sig
Defined in:
lib/lazy_migrate/new_migrator_adapter.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from MigratorAdapter

#bring_to_top, #dump_schema, #find_migrations, #load_migration_paths, #previous_value, #remove_version_from_table, #replace_version_in_filename

Constructor Details

#initialize ⇒ NewMigratorAdapter

Returns a new instance of NewMigratorAdapter.



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 15

def initialize
  # TODO: consider making this a method rather than an instance variable
  # considering how cheap it is to obtain
  @context = T.let(
    ActiveRecord::MigrationContext.instance_method(:initialize).arity == 2 ?
      ActiveRecord::MigrationContext.new(Rails.root.join('db', 'migrate'), ActiveRecord::SchemaMigration) :
      ActiveRecord::MigrationContext.new(Rails.root.join('db', 'migrate')),
    ActiveRecord::MigrationContext,
  )
end

Instance Attribute Details

#context ⇒ Object

Returns the value of attribute context.



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 12

def context
  @context
end

Instance Method Details

#down(version) ⇒ Object 



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 32

def down(version)
  context.run(:down, version)
end

#migrate(version) ⇒ Object 



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 43

def migrate(version)
  context.up(version)
end

#redo(version) ⇒ Object 



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 37

def redo(version)
  down(version)
  up(version)
end

#rollback(version) ⇒ Object 



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 48

def rollback(version)
  # for some reason in https://github.com/rails/rails/blob/5-2-stable/activerecord/lib/active_record/migration.rb#L1221
  # we stop before the selected version. I have no idea why.

  previous_version = find_previous_version(version)

  if previous_version.nil?
    # rails excludes the given version when calling .down so we need to
    # just down this instead
    down(version)
  else
    context.down(previous_version)
  end
end

#up(version) ⇒ Object 



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# File 'lib/lazy_migrate/new_migrator_adapter.rb', line 27

def up(version)
  context.run(:up, version)
end