| Conditions | 13 | 
| Paths | 21 | 
| Total Lines | 86 | 
| 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 | ||
| 127 | protected function execute(InputInterface $input, OutputInterface $output) | ||
| 128 |     { | ||
| 129 |         if (($keep = (int) $input->getOption('keep')) < 0) { | ||
| 130 | throw new InvalidArgumentException( | ||
| 131 | 'status', | ||
| 132 | 'Keep value can not be negative.' | ||
| 133 | ); | ||
| 134 | } | ||
| 135 | |||
| 136 |         $status = $input->getOption('status'); | ||
| 137 | |||
| 138 | $contentIds = $this->getObjectsIds($keep, $status); | ||
| 139 | $contentIdsCount = count($contentIds); | ||
| 140 | |||
| 141 |         if ($contentIdsCount === 0) { | ||
| 142 |             $output->writeln('<info>There is no Content matching given criteria.</info>'); | ||
| 143 | |||
| 144 | return; | ||
| 145 | } | ||
| 146 | |||
| 147 | $output->writeln(sprintf( | ||
| 148 | '<info>Found %d Content IDs matching given criteria.</info>', | ||
| 149 | $contentIdsCount | ||
| 150 | )); | ||
| 151 | |||
| 152 | $removedVersionsCounter = 0; | ||
| 153 | |||
| 154 | $removeAll = $status === self::VERSION_ALL; | ||
| 155 | $removeDrafts = $status === self::VERSION_DRAFT; | ||
| 156 | $removeArchived = $status === self::VERSION_ARCHIVED; | ||
| 157 | |||
| 158 |         foreach ($contentIds as $contentId) { | ||
| 159 |             try { | ||
| 160 | $contentInfo = $this->contentService->loadContentInfo((int) $contentId); | ||
| 161 | $versions = $this->contentService->loadVersions($contentInfo); | ||
| 162 | $versionsCount = count($versions); | ||
| 163 | |||
| 164 | $output->writeln(sprintf( | ||
| 165 | '<info>Content %d has %d version(s)</info>', | ||
| 166 | (int) $contentId, | ||
| 167 | $versionsCount | ||
| 168 | ), Output::VERBOSITY_VERBOSE); | ||
| 169 | |||
| 170 |                 $versions = array_filter($versions, function ($version) use ($removeAll, $removeDrafts, $removeArchived) { | ||
| 171 | if ( | ||
| 172 | ($removeAll && $version->status !== VersionInfo::STATUS_PUBLISHED) || | ||
| 173 | ($removeDrafts && $version->status === VersionInfo::STATUS_DRAFT) || | ||
| 174 | ($removeArchived && $version->status === VersionInfo::STATUS_ARCHIVED) | ||
| 175 |                     ) { | ||
| 176 | return $version; | ||
| 177 | } | ||
| 178 | }); | ||
| 179 | |||
| 180 |                 if ($keep > 0) { | ||
| 181 | $versions = array_slice($versions, 0, -$keep); | ||
| 182 | } | ||
| 183 | |||
| 184 | $output->writeln(sprintf( | ||
| 185 | "Found %d content's (%d) version(s) to remove.", | ||
| 186 | count($versions), | ||
| 187 | (int) $contentId | ||
| 188 | ), Output::VERBOSITY_VERBOSE); | ||
| 189 | |||
| 190 | /** @var \eZ\Publish\API\Repository\Values\Content\VersionInfo $version */ | ||
| 191 |                 foreach ($versions as $version) { | ||
| 192 | $this->contentService->deleteVersion($version); | ||
| 193 | ++$removedVersionsCounter; | ||
| 194 | $output->writeln(sprintf( | ||
| 195 | "Content's (%d) version (%d) has been deleted.", | ||
| 196 | $contentInfo->id, | ||
| 197 | $version->id | ||
| 198 | ), Output::VERBOSITY_VERBOSE); | ||
| 199 | } | ||
| 200 |             } catch (Exception $e) { | ||
| 201 | $output->writeln(sprintf( | ||
| 202 | '<error>%s</error>', | ||
| 203 | $e->getMessage() | ||
| 204 | )); | ||
| 205 | } | ||
| 206 | } | ||
| 207 | |||
| 208 | $output->writeln(sprintf( | ||
| 209 | '<info>Removed %d unwanted contents version(s).</info>', | ||
| 210 | $removedVersionsCounter | ||
| 211 | )); | ||
| 212 | } | ||
| 213 | |||
| 267 | 
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 implementation 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 interface: