By Jennifer Hodgdon
If you’re an internet programmer new to Drupal, this ebook exhibits you which of them programming innovations you could use—and that you should still avoid—when development customized internet functions with this content material administration framework. Drupal has its personal set of programming rules that require a special strategy, and plenty of programmers make error whilst hoping on talents they’ve used for different initiatives. the information during this ebook assist you throughout the transition by means of demonstrating which programming practices comply with the “Drupal way,” and which don’t.
If you’re acquainted with Hypertext Preprocessor, you’ll quick methods to reap the benefits of the robust Drupal API.
* Get a whole evaluate of Drupal, together with Drupal center and add-on modules and issues
* study Drupal’s uncomplicated programming rules, corresponding to the facility to customise habit and output with hooks
* realize universal Drupal programming mistakes—and why hacking is one among them
* discover particular parts the place you could positioned your programming talents to paintings
* research programming suggestions and instruments that will help you ideal and debug your functions
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Additional info for A Programmer's Guide to Drupal
Some people prefer to build page layouts with the contributed Panels module rather than using Context. Also note that the page layout and context system will be totally overhauled in Drupal 8. Web forms The contributed Webform module covers many web form use cases, and you can also learn its API and do a little programming if you need a form field type that is not included (but check to see if someone has already contributed a module that defines the form field that you need). Responding to events The contributed Rules module allows you to define responses (such as sending email or redirecting to a different page) to various events (such as updating or adding content) on your website, under certain conditions (such as matching a content type or user role).
Writing formal documentation headers before you start work on the code for a function or class is a great way to ensure that you’ve thought out what the function or class should do, and it will also help you or the next maintainer of the code to remember what the code was supposed to do. In addition, while writing tests for the functionality of your code does take time (and the testing framework takes some time to learn how to use), I have found that even basic tests usually find bugs in code that I would not otherwise be aware of, and having tests also greatly lessens the chance that feature additions or bug fixes added later will break existing functionality.
Here, provide default values. 'input1' => '', ), // If you want to use a template, include this line; for a theme // function, leave it out. 14 | Chapter 2: Drupal Programming Principles 'template' => 'mymodule-hookname', ), ); } 3. Define a default implementation of your theme hook in your module. php. Template files are generally preferred to theme functions. Tem‐ plate files should print the data in appropriate HTML markup; theme functions should compose a string containing the data and HTML markup and return that.
A Programmer's Guide to Drupal by Jennifer Hodgdon