| Conditions | 1 | 
| Paths | 1 | 
| Total Lines | 14 | 
| Code Lines | 2 | 
| Lines | 0 | 
| Ratio | 0 % | 
| Changes | 1 | ||
| Bugs | 0 | Features | 1 | 
| 1 | <?php | ||
| 45 | protected function getScriptSource() | ||
| 46 |     { | ||
| 47 | return parent::getScriptSource() . ' | ||
| 48 |             jQuery(\'tr[data-row-with-details="1"]\').click(function() { | ||
| 49 | var $detailsRow = jQuery(this).next(); | ||
| 50 | var $detailsContainer; | ||
| 51 |                 if (!$detailsRow.data(\'loaded\')) { | ||
| 52 | $detailsRow.data(\'loaded\', 1); | ||
| 53 | $detailsContainer = $detailsRow.find(\'[data-details-container="1"]\'); | ||
| 54 |                     $detailsContainer.load($detailsContainer.data("details-url")); | ||
| 55 | } | ||
| 56 | }); | ||
| 57 | '; | ||
| 58 | } | ||
| 59 | } | ||
| 60 | 
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: