CakePHP在SELECT输入中选择默认值 [英] CakePHP select default value in SELECT input

问题描述

使用CakePHP：

我有一个多对一的关系，让我们假装它是很多的树叶。当然，我烘焙了一个表单来添加一个树叶，你可以指定它是一个下拉框（标签）由表单助手创建的树。

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.

唯一的事情是，SELECT框总是默认为树＃1，但我想它默认为要添加到的树：

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:

，调用 example.com/leaf/add/5 会打开一个新的叶子到树＃5的界面。 Leaf.tree_id 的下拉框将默认为树5，而不是其当前默认的树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.

我需要放在我的Leaf控制器和Leaf view / add.ctp 中做什么？

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

推荐答案

您不应该使用 select（）或 text c>或 radio（）等;这是可怕的做法。您应该使用 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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