Nhiều người trong số các loại trường sẽ được quen thuộc với người sử dụng trong quá khứ của CCK. Tuy nhiên, cũng có một số loại lĩnh vực quan trọng hoặc không có mặt trong các phiên bản trước hoặc các phần mở rộng cần thiết để CCK. Chúng bao gồm các tập tin, | Chapter 3 List text Long text Long text and summary Term reference Text Many of these field types will be familiar to past users of CCK. However there are also some important new field types that were either not present in prior versions or required extensions to CCK. These include File Image Long text and summary and Term reference. After you select the type of field you will need to select the widget to use when displaying the field. In Drupal 7 these include Widget name Applicable field types Select List Boolean List List numeric List text Term reference Checkboxes radio buttons Boolean List List numeric List text Term reference Single on off checkbox Boolean Text field Decimal Float Integer Text File File Image Image Text area multiple rows Long text Text area with a summary Autocomplete term widget tagging Long text and summary Term reference Let s look in more detail at each field type. Boolean fields Boolean fields allow you to add fields that only have two possible values. Typically these are yes no true false on off and so on. Let s add a sample field. For the field label enter Is Drupal the best CMS for the field name enter is_drupal_best select Boolean for the field type and Check boxes radio buttons for the Widget. Click on Save to add the new field. 69 Site Building with Drupal 7 After the field is saved Drupal will present a form where you can set the options for the field. The contents of this form will vary depending on the type of widget you select but for our configuration it will appear as follows Let s look more at Allowed values list. The Allowed values list field allows you to specify the options you want to display with the value for each option. Typically a Boolean field will use 0 for the option representing no false off and either 1 or -1 for the option representing yes true on. The options will display when the field is being edited in the same order as the values in Allowed values list. It s a good idea to put the most common value .
