Introduction
update time：2018-02-05|
Drupal provides an application programming interface (API) for generating, validating, and processing HTML forms. The form API abstracts the form into a nested array, which contains attributes and values. When generating the page, the form rendering engine will render the array at the appropriate time. This approach has multiple meanings: Instead of outputting the HTML directly, we create an array and let the engine generate the HTML. Because we're handling the form's representation as structured data, we can add, delete, reorder, and modify forms. This is especially convenient when you want to make changes to forms created by other modules in a clean way. Any form element can be mapped to any theme function. Additional form validation or processing functions can be added to any form. |
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