By Jennifer Hodgdon

If you are an online programmer new to Drupal, this publication indicates you which of them programming recommendations you should use - and that you may still keep away from - whilst development customized net functions with this content material administration framework. Drupal has its personal set of programming ideas that require a distinct method, and plenty of programmers make errors while hoping on talents they have used for different tasks. the tips during this e-book assist you during the transition by way of demonstrating which programming practices comply with the "Drupal way," and which do not.

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Additional resources for Programmer's Guide to Drupal: Principles, Practices, and Pitfalls

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Info Avoiding Custom Programming with Fielded Data While your first instinct, if you need to manage some fielded data on your website, might be to set up a custom database table to store your data, and to display your data using custom queries, you can save yourself a lot of unnecessary programming by instead using entities, fields, and the Views module. Entities are a new concept for Drupal version 7: modules define entity types to store information for a website, and the field system allows many different types of data to be attached to the base entity.

If you do need a permission system that is more customized than what Content Access and other contributed content access modules provide, you will need to create a custom module. Marking and classifying content If your site needs content classification, use the core Taxonomy module rather than writing custom code. ), the contributed Flag module is the usual choice. There are also voting modules, such as Fivestar, if this is a feature you need on your site. info Placing content on pages Rather than using PHP code or embedding content directly into custom theme template files or theme functions, use the Drupal core block system to place content into regions on pages.

Examples: // Bad: print '

' . $text . '

'; print '' . $text . ''; print l(check_plain($text), check_url($url)); // Good: print '

' . check_plain($text) . org under the “Sanitization” topic. info • “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.

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