Book Image

Drupal 7 First Look

Book Image

Drupal 7 First Look

Overview of this book

Drupal 7 contains features for which site administrators have been clamoring for years, including support for fields, an improved administration interface, better database support, improved theming, and more. You could of course make a laborious search on sites, blogs, and many online tutorials that would promise to update you about every new feature, but there's an even better way to know all about Drupal 7's new features: Drupal 7 First Look is the first and only book that covers all of the fantastic new features in Drupal 7 in depth and covers the process of upgrading your Drupal 6 site to Drupal 7. If you've used Drupal 6 and want to use Drupal 7, you need this book.Drupal 7 First Look takes an in-depth look into all of the major new features in Drupal 7 so you can quickly take full advantage of Drupal 7. It also assists you in upgrading your site to Drupal 7. Some of the new features in Drupal 7 include: Fields API, based on Drupal 6 CCK, which allows you to easily build your own content types Improved user interface for administering your website Built-in support for working with images and files Improved security for the site and users of the site Completely rewritten database layer DBTNG to make working with the database easier and more secure. Improved API for custom module development and user interface theming
Table of Contents (13 chapters)
Drupal 7 First Look
Credits
About the Author
About the Reviewer
Preface
Index

Image handling


To support the new image manipulation functionality, several new hooks have been added:

hook_image_default_styles

hook_image_default_styles()

You may implement this hook in your module to programmatically define image styles that can be used by your module or by other modules. You should only define additional styles if you cannot reuse the default styles provided by Drupal. You can also use this hook to move your image styles into code to make it easier to manage site changes.

hook_image_styles_alter

hook_image_styles_alter($styles)

When you implement this hook, you can change information about the styles defined by other modules. Please be careful when modifying styles to avoid users being frustrated by their changes not taking effect.

hook_image_style_delete

hook_image_style_delete($style)

This hook allows you to react when an image style is deleted within the system. A possible replacement name may be defined as $style['name']. This gives you the opportunity to reset any images...