Class Rails::Generator::Commands::Destroy
In: vendor/rails/railties/lib/rails_generator/commands.rb
Parent: RewindBase

Undo the actions performed by a generator. Rewind the action manifest and attempt to completely erase the results of each action.

Methods

Public Instance methods

[Source]

     # File vendor/rails/railties/lib/rails_generator/commands.rb, line 509
509:         def complex_template(*args)
510:           # nothing should be done here
511:         end

Remove each directory in the given path from right to left. Remove each subdirectory if it exists and is a directory.

[Source]

     # File vendor/rails/railties/lib/rails_generator/commands.rb, line 473
473:         def directory(relative_path)
474:           parts = relative_path.split('/')
475:           until parts.empty?
476:             partial = File.join(parts)
477:             path = destination_path(partial)
478:             if File.exist?(path)
479:               if Dir[File.join(path, '*')].empty?
480:                 logger.rmdir partial
481:                 unless options[:pretend]
482:                   if options[:svn]
483:                     # If the directory has been marked to be added
484:                     # but has not yet been checked in, revert and delete
485:                     if options[:svn][relative_path]
486:                       system("svn revert #{path}")
487:                       FileUtils.rmdir(path)
488:                     else
489:                     # If the directory is not in the status list, it
490:                     # has no modifications so we can simply remove it
491:                       system("svn rm #{path}")
492:                     end
493:                   # I don't think git needs to remove directories?..
494:                   # or maybe they have special consideration...
495:                   else
496:                     FileUtils.rmdir(path)
497:                   end
498:                 end
499:               else
500:                 logger.notempty partial
501:               end
502:             else
503:               logger.missing partial
504:             end
505:             parts.pop
506:           end
507:         end

Remove a file if it exists and is a file.

[Source]

     # File vendor/rails/railties/lib/rails_generator/commands.rb, line 428
428:         def file(relative_source, relative_destination, file_options = {})
429:           destination = destination_path(relative_destination)
430:           if File.exist?(destination)
431:             logger.rm relative_destination
432:             unless options[:pretend]
433:               if options[:svn]
434:                 # If the file has been marked to be added
435:                 # but has not yet been checked in, revert and delete
436:                 if options[:svn][relative_destination]
437:                   system("svn revert #{destination}")
438:                   FileUtils.rm(destination)
439:                 else
440:                 # If the directory is not in the status list, it
441:                 # has no modifications so we can simply remove it
442:                   system("svn rm #{destination}")
443:                 end
444:               elsif options[:git]
445:                 if options[:git][:new][relative_destination]
446:                   # file has been added, but not committed
447:                   system("git reset HEAD #{relative_destination}")
448:                   FileUtils.rm(destination)
449:                 elsif options[:git][:modified][relative_destination]
450:                   # file is committed and modified
451:                   system("git rm -f #{relative_destination}")
452:                 else
453:                   # If the directory is not in the status list, it
454:                   # has no modifications so we can simply remove it
455:                   system("git rm #{relative_destination}")
456:                 end
457:               else
458:                 FileUtils.rm(destination)
459:               end
460:             end
461:           else
462:             logger.missing relative_destination
463:             return
464:           end
465:         end

When deleting a migration, it knows to delete every file named "[0-9]*_#{file_name}".

[Source]

     # File vendor/rails/railties/lib/rails_generator/commands.rb, line 514
514:         def migration_template(relative_source, relative_destination, template_options = {})
515:           migration_directory relative_destination
516: 
517:           migration_file_name = template_options[:migration_file_name] || file_name
518:           unless migration_exists?(migration_file_name)
519:             puts "There is no migration named #{migration_file_name}"
520:             return
521:           end
522: 
523: 
524:           existing_migrations(migration_file_name).each do |file_path|
525:             file(relative_source, file_path, template_options)
526:           end
527:         end

[Source]

     # File vendor/rails/railties/lib/rails_generator/commands.rb, line 529
529:         def route_resources(*resources)
530:           resource_list = resources.map { |r| r.to_sym.inspect }.join(', ')
531:           look_for = "\n  map.resources #{resource_list}\n"
532:           logger.route "map.resources #{resource_list}"
533:           gsub_file 'config/routes.rb', /(#{look_for})/mi, ''
534:         end
template(relative_source, relative_destination, file_options = {})

Alias for file

[Validate]