In the last chapter, we looked at the new DBTNG layer for Drupal 7, which controls how you interact with databases in Drupal. DBTNG is arguably the biggest and most important change for developers in Drupal 7. However, there are also numerous other changes that affect how module developers will interact with the system.
In this chapter, we will take a look at all of the key changes to the Drupal API. We will start by looking at the .info
file changes that are required to make custom modules function properly as well as changes to the API related to getting information about modules. Next, we will look into changes related to the Drupal core system. After this, we will examine changes to the menu system before moving onto changes to the Form API and file uploads. Following the file handling APIs, we will consider the new Field API from a developer's perspective. We will wrap up by checking out changes to other areas including:
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