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In this video tutorial, form States are being implemented to conditionally show form fields. An already created module will be used to create a boolean field that will be used as a state. Hook form alter will be implemented to add the states logic. A Drupal instance with a content type called article and a body field is used. A new boolean field called "width body" will be created to show or hide the body field based on its status. By default, the "width body" field will be unchecked, hiding the body field. When checked, the body field will be shown. The objective is to have the two fields next to each other in the content creation form.
