CakePHP 在 SELECT 输入中选择默认值

问题描述

使用 CakePHP:

Using CakePHP:

我有一个多对一的关系，让我们假设它是许多叶子到树.当然，我烘焙了一个表单，将一个叶子添加到一棵树中，您可以通过表单助手创建的下拉框(标签)指定它是哪个树.

I have a many-to-one relationship, let's pretend it's many Leafs to Trees. Of course, I baked a form to add a Leaf to a Tree, and you can specify which Tree it is with a drop-down box ( tag) created by the form helper.

唯一的问题是，SELECT 框始终默认为 Tree #1，但我希望它默认为要添加到的 Tree:

The only thing is, the SELECT box always defaults to Tree #1, but I would like it to default to the Tree it's being added to:

例如，调用 example.com/leaf/add/5 会调出界面，将新的叶子添加到树 #5.Leaf.tree_id 的下拉框将默认为Tree 5"，而不是当前默认为Tree 1".

For example, calling example.com/leaf/add/5 would bring up the interface to add a new Leaf to Tree #5. The dropdown box for Leaf.tree_id would default to "Tree 5", instead of "Tree 1" that it currently defaults to.

我需要在我的 Leaf 控制器和 Leaf view/add.ctp 中放入什么来做到这一点?

What do I need to put in my Leaf controller and Leaf view/add.ctp to do this?

推荐答案

你不应该使用 select(), or text(), or radio() 等；这是可怕的做法.你应该使用 input():

You should never use select(), or text(), or radio() etc.; it's terrible practice. You should use input():

$form->input('tree_id', array('options' => $trees));

然后在控制器中:

$this->data['Leaf']['tree_id'] = $id;

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