By Jennifer Hodgdon
If you’re an internet programmer new to Drupal, this booklet exhibits you which of them programming suggestions you could use—and that you may still avoid—when construction customized internet purposes with this content material administration framework. Drupal has its personal set of programming rules that require a distinct strategy, and lots of programmers make errors whilst hoping on talents they’ve used for different initiatives. the information during this booklet assist you throughout the transition through demonstrating which programming practices comply with the “Drupal way,” and which don’t.
If you’re acquainted with personal home page, you’ll fast tips on how to benefit from the robust Drupal API.
* Get an entire assessment of Drupal, together with Drupal center and add-on modules and topics
* research Drupal’s easy programming rules, equivalent to the facility to customise habit and output with hooks
* notice universal Drupal programming mistakes—and why hacking is considered one of them
* discover particular parts the place you could positioned your programming talents to paintings
* study programming suggestions and instruments that will help you excellent and debug your functions
Read Online or Download A Programmer's Guide to Drupal PDF
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Extra info for A Programmer's Guide to Drupal
Tests can also be considered to be another form of documentation, since they document the expected functionality of your code by testing that it performs the way it should. The Simpletest testing framework allows you to create both unit tests (low-level tests of specific functions or classes) and functional tests (higher-level tests that can involve simulating a browser and checking that pages and forms behave as they should); both can be appropriate for code that you write. org/ project/examples) have tests, and there are also many tests in Drupal core.
While that is sometimes necessary, many use cases are covered by the contributed Custom Breadcrumbs module, which is quite easy to set up. Mistake: Programming Too Much | 37 Site configuration export The contributed Features module lets you export much of the configuration of a Drupal site to PHP code. For instance, you can export your custom content types and fields, your Views, and many other settings; the result is a module, which you can then put into revision control or share with another site.
However, note that some Drupal API functions, such as l() (for making links), cleanse input themselves, so read the function documentation and don’t doublecleanse. Examples: // Bad: print '
' . $text . '
'; print '' . $text . ''; print l(check_plain($text), check_url($url)); // Good: print '
' . check_plain($text) . org under the “Sanitization” topic. org/writing-secure-code 28 | Chapter 2: Drupal Programming Principles • “Mistake: Saving PHP Code in the Database” (page 43) Checking Drupal Permissions Drupal has a rich permission system, which your modules need to interact with properly to ensure that users, including anonymous site visitors, are only allowed to see infor‐ mation and perform actions that they have permission for.