Drupal - text_list 字段的动态选项
我有一个自定义节点类型，我想要一个字段使用基于 list_text 的特殊组合框。当选择list_text类型时，通常可以输入可选文本的静态列表，但是，我希望该列表是动态的，即基于db_query的结果>。使用 Drupal 7 执行此操作的最佳方法是什么？
一个简单的说明示例：此自定义类型 X 的节点包含一个指向另一个节点的字段，因此每当创建类型 X 的节点时，我都需要一个包含所有其他节点的组合框。
（最好的解决方案是仅在节点创建期间显示组合框，而在编辑期间不再显示。但如果在编辑期间也显示组合框，我也可以接受它。）
我尝试自定义 options_select 通过定义我自己的数据类型并相应地实现 hook_options_list 。组合框在创建过程中以正确的值显示，但是，我无法保存它。我不知道那里出了什么问题，但在第一次提交时它会更改为不同的主题，当我再次尝试时，我得到了一个内部服务器错误。我为该字段定义全新的数据类型是否走在正确的轨道上？肯定有更简单的方法吗？
I have a custom node type for which I want to have a field that uses a special combobox based on list_text. When one chooses the type list_text it is normally possible to enter a static list of selectable texts, however, I want this list to be dynamic, i.e. based on the results of a db_query. What is the best way to do this using Drupal 7?
A simple example for clarification: A node of this custom type X contains a field that points to another node, so whenever a node of type X is created I want a combobox that contains all other nodes.
(Best solution would be to only display the combobox during node creation, and no longer during edit. But I could also live with it if the combobox was shown during the edit as well.)
I have tried to customize options_select by defining my own data type and implementing hook_options_list accordingly. The combobox was displayed during creation with the correct values, however, I could not save it.. I have no idea what went wrong there, but on the first submit it would change to a different theme, and when I tried again I got an internal server error. Am I on the right track at all with defining a completely new data type for the field? there surely must be a simpler way?
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你是对的，你不需要新的数据类型。这是关于如何执行此操作的一个很好的教程 。它不是专门针对 D7 的，但我没有看到太多仍然适用的内容。可能有更好的方法专门在 D7 中执行此操作，但如果是的话我也很想知道:)
You're right in that you don't need a new datatype. Here's a good tutorial on how to do this. It's not specifically for D7 but I didn't see much that wasn't still applicable. There may be a better way to do it in D7 specifically but I would love to know it too if so :)
allegroconmolto 链接的教程为我提供了正确的方法。谢谢你。
这是更简单的方法： 教程
基本上，正如我所假设的，它是一个常见的问题，因此现在
webform模块中包含了一个简单的解决方案。它提供了一个hook_webform_select_options_info，可用于注册回调方法。每次显示 Web 表单的相应选项选择时都会调用回调方法，以便您可以轻松地使用 dbquery 或其他任何内容的结果填充它。效果就像一个魅力，几乎不需要时间来实施。The tutorial linked by allegroconmolto sent me on the right way. Thanks for that.
Here's the simpler way of doing it: tutorial
Basically, it is, as I assumed, a common problem and hence a simple solution for it was included in the
webformmodule by now. It provides ahook_webform_select_options_infowhich can be used to register a callback method. The callback method is then called each time a corresponding option select of a webform is shown, so that you can easily fill it with the results of adbqueryor anything else. Works like a charm and takes next to no time to implement.