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$this->params['form']

1. $this->params['form']

表单的所有数据通过POST方法传递进来都保存在这里，包括$_FILES变量的数据

$this->params['admin']

Is set to 1 if the current action was invoked via admin routing.

$this->params['bare']

1. $this->params['bare']

如果当前页面为空为1，不为空则为0

$this->params['ajax']

1. $this->params['ajax']

如果当前的页面被设置成‘ajax’这个值就为1，否则是0，这个变量只有在RequestHandler组件在控制器里被使用时才会被设置

$this->params['controller']

1. $this->params['controller']

保存当前请求的控制器的名字。比如，如果URL是这样/posts/view/1， $this->params['controller']就等于posts

$this->params['action']

1. $this->params['action']

保存请求中的action的名字，比如：如果URL是这样/posts/view/1， 那么$this->params['action']就等于view

$this->params['pass']

1. $this->params['pass']

保存当前请求的GET的查询语句。比如，如果URL是这样/posts/view/?var1=3&var2=4， $this->params['pass']就等于"?var1=3&var2=4"

$this->params['url']

1. $this->params['url']

保存当前URL的请求，以键值对(key-value)的形式保存变量，比如，如果URL是这样/posts/view/?var1=3&var2=4，$this->params['url']的值就是

[url] => Array
(
    [url] => posts/view
    [var1] => 3
    [var2] => 4
)

1. [url] => Array
2. (
3. [url] => posts/view
4. [var1] => 3
5. [var2] => 4
6. )

$this->data

1. $this->data

通常用来处理FormHelper表单通过POST方法发送到控制器的数据

<?php

// FormHelper用来创建FORM表单的元素:

$form->text('User.first_name');

// 在页面上我们会看到的是这样的：

<input name="data[User][first_name]" value="" type="text" />

// 当表单通过POST提交了给控制后，数据就保存在$this->data中

//可以通过以下方法看到提交的first name:
$this->data['User']['first_name'];

?>

1. <?php
2. // FormHelper用来创建FORM表单的元素:
3. $form->text('User.first_name');
4. // 在页面上我们会看到的是这样的：
5. <input name="data[User][first_name]" value="" type="text" />
6. // 当表单通过POST提交了给控制后，数据就保存在$this->data中
7. //可以通过以下方法看到提交的first name:
8. $this->data['User']['first_name'];
9. ?>

$this->params['prefix']

Set to the routing prefix. For example, this attribute would contain the string "admin" during a request to /admin/posts/someaction.

$this->params['named']

Stores any named parameters in the url query string in the form /key:value/. For example, if the URL /posts/view/var1:3/var2:4 was requested, $this->params['named'] would be an array containing:

[named] => Array
(
    [var1] => 3
    [var2] => 4
)