Chapter 8. Working with Fields
A field is a commonly used component in Drupal that is used to store a value that a user has entered or a module has created. Information from fields is validated, stored in the database, and may be retrieved from the database and displayed on the web site. Examples of fields include usernames, street addresses, phone numbers, prices, a paragraph or two that describes an event, a date, or any other piece of information that you can think of.
The approach for creating fields changed dramatically in Drupal 7 with the addition of the Field API in core. What used to be a tedious task of defining tables and writing code that validates, stores, retrieves, and displays field-level information is now handled through a set ...
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