| Conditions | 7 | 
| Paths | 10 | 
| Total Lines | 80 | 
| Lines | 0 | 
| Ratio | 0 % | 
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | <?php | ||
| 61 | protected function execute(InputInterface $input, OutputInterface $output) | ||
| 62 |     { | ||
| 63 | /** @var KernelInterface $kernel */ | ||
| 64 | $kernel = $this->getApplication()->getKernel(); | ||
|  | |||
| 65 | $environment = $kernel->getEnvironment(); | ||
| 66 | /** @var FormatterHelper $formatter */ | ||
| 67 |         $formatter = $this->getHelper('formatter'); | ||
| 68 | |||
| 69 | // Be careful, when using the no-interaction option you will not get the confirmation question | ||
| 70 |         $noInteraction = $input->getOption('no-interaction'); | ||
| 71 | |||
| 72 |         if (!in_array($environment, ['dev_event_replay', 'prod_event_replay', 'smoketest_event_replay'])) { | ||
| 73 | $output->writeln($formatter->formatBlock( | ||
| 74 | [ | ||
| 75 | '', | ||
| 76 | 'This command may only be executed using env "dev_event_replay", "prod_event_replay", or | ||
| 77 | "smoketest_event_replay"', | ||
| 78 | '' | ||
| 79 | ], | ||
| 80 | 'error' | ||
| 81 | )); | ||
| 82 | |||
| 83 | return; | ||
| 84 | } | ||
| 85 | |||
| 86 | /** @var QuestionHelper $interrogator */ | ||
| 87 |         $interrogator = $this->getHelper('question'); | ||
| 88 |         if ($environment === 'prod_event_replay') { | ||
| 89 | $wantToRunOnProd = new ConfirmationQuestion( | ||
| 90 | '<question>You have selected to run this on production. Have you disabled all access to the production ' | ||
| 91 | .'environment? (y/N)</question>', | ||
| 92 | false | ||
| 93 | ); | ||
| 94 | |||
| 95 |             if (!$interrogator->ask($input, $output, $wantToRunOnProd)) { | ||
| 96 |                 $output->writeln('<comment>Not starting the replay</comment>'); | ||
| 97 | |||
| 98 | return; | ||
| 99 | } | ||
| 100 | } | ||
| 101 | |||
| 102 |         $increments = (int)$input->getOption('increments'); | ||
| 103 |         if ($increments < 1) { | ||
| 104 | $output->writeln( | ||
| 105 | $formatter->formatBlock( | ||
| 106 |                     sprintf('Increments must be a positive integer, "%s" given', $input->getOption('increments')), | ||
| 107 | 'error' | ||
| 108 | ) | ||
| 109 | ); | ||
| 110 | |||
| 111 | return; | ||
| 112 | } | ||
| 113 | |||
| 114 |         if (!$noInteraction) { | ||
| 115 | $output->writeln(['', $formatter->formatBlock(['', 'WARNING!!!!', ''], 'error'), '']); | ||
| 116 | |||
| 117 | $question = <<<QUESTION | ||
| 118 | You are about to WIPE all read data and recreate all data based on the events present, in steps of %d. | ||
| 119 | |||
| 120 | <%s>>> This can take a while and should not be interrupted <<</%s> | ||
| 121 | |||
| 122 | Are you sure you wish to continue? (y/N) | ||
| 123 | QUESTION; | ||
| 124 | |||
| 125 | $question = sprintf($question, $increments, 'error', 'error'); | ||
| 126 |             $areYouSure = new ConfirmationQuestion(sprintf("<question>%s</question>\n", $question), false); | ||
| 127 |             if (!$interrogator->ask($input, $output, $areYouSure)) { | ||
| 128 |                 $output->writeln('<comment>Replay cancelled!</comment>'); | ||
| 129 | |||
| 130 | return; | ||
| 131 | } | ||
| 132 | } | ||
| 133 | |||
| 134 |         $output->writeln(['', $formatter->formatBlock('Starting Event Replay', 'info')]); | ||
| 135 | $output->writeln( | ||
| 136 |             $formatter->formatBlock(' >> If it is interrupted it must be rerun till completed', 'comment') | ||
| 137 | ); | ||
| 138 | |||
| 139 | $this->replayer->replayEvents($output, $increments); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | 
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: