| Conditions | 9 | 
| Paths | 8 | 
| Total Lines | 53 | 
| 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 | ||
| 49 | public function resolve( | ||
| 50 | FieldDescriptionInterface $fieldDescription, | ||
| 51 | ModelManagerInterface $modelManager | ||
| 52 |     ): ?DataTransformerInterface { | ||
| 53 |         $dataTransformer = $fieldDescription->getOption('data_transformer'); | ||
| 54 | |||
| 55 | // allow override predefined transformers for 'date', 'boolean' and 'choice' field types | ||
| 56 |         if ($dataTransformer instanceof DataTransformerInterface) { | ||
| 57 | return $dataTransformer; | ||
| 58 | } | ||
| 59 | |||
| 60 | $fieldType = (string) $fieldDescription->getType(); | ||
| 61 | |||
| 62 | // allow override predefined transformers on a global level | ||
| 63 |         if (\array_key_exists($fieldType, $this->globalCustomTransformers)) { | ||
| 64 | return $this->globalCustomTransformers[$fieldType]; | ||
| 65 | } | ||
| 66 | |||
| 67 | // Handle date type has setter expect a DateTime object | ||
| 68 |         if (TemplateRegistry::TYPE_DATE === $fieldType) { | ||
| 69 | $this->globalCustomTransformers[$fieldType] = new DateTimeToStringTransformer(null, null, 'Y-m-d'); | ||
| 70 | |||
| 71 | return $this->globalCustomTransformers[$fieldType]; | ||
| 72 | } | ||
| 73 | |||
| 74 | // Handle datetime type has setter expect a DateTime object | ||
| 75 |         if (TemplateRegistry::TYPE_DATETIME === $fieldType) { | ||
| 76 | $this->globalCustomTransformers[$fieldType] = new DateTimeToStringTransformer(null, null, 'Y-m-d H:i:s'); | ||
| 77 | |||
| 78 | return $this->globalCustomTransformers[$fieldType]; | ||
| 79 | } | ||
| 80 | |||
| 81 | // Handle boolean type transforming the value into a boolean | ||
| 82 |         if (TemplateRegistry::TYPE_BOOLEAN === $fieldType) { | ||
| 83 |             $this->globalCustomTransformers[$fieldType] = new BooleanToStringTransformer('1'); | ||
| 84 | |||
| 85 | return $this->globalCustomTransformers[$fieldType]; | ||
| 86 | } | ||
| 87 | |||
| 88 | // Handle entity choice association type, transforming the value into entity | ||
| 89 |         if (TemplateRegistry::TYPE_CHOICE === $fieldType) { | ||
| 90 |             $className = $fieldDescription->getOption('class'); | ||
| 91 | |||
| 92 | if (null !== $className && | ||
| 93 | // NEXT_MAJOR: Replace this call with "$className === $fieldDescription->getTargetModel()". | ||
| 94 | $this->hasFieldDescriptionAssociationWithClass($fieldDescription, $className) | ||
| 95 |             ) { | ||
| 96 | return new ModelToIdTransformer($modelManager, $className); | ||
| 97 | } | ||
| 98 | } | ||
| 99 | |||
| 100 | return null; | ||
| 101 | } | ||
| 102 | |||
| 112 | 
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: