cakePHP使用笔记

plugin

官方资料：https://book.cakephp.org/2.0/en/plugins/how-to-install-plugins.html

Cakephp 版本 2.4.6

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查询数据库

find

find(string $type = 'first', array $params = array())

$type 可以是 'all', 'first', 'count', 'list', 'neighbors' or 'threaded'，type 参数大小写敏感。

查询所有 find('all', $params)

$this->find('all', array('conditions' => array( ),
                'fields'=>array('id','ctime'),
                'order'=>'id DESC'
));

// output
Array(
    [0] => Array(
            [ModelName] => Array(
                    [id] => 1
                    [ctime] => value1
                )
        )
)

conditions 例子

'age >=' => 16,
'age' => array(16, 17, 18),

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常用 App 静态方法

App::build

定义包的查找路径

// 设置 Mysql Model 的查找路径
App::build(array('Model'=>array(APP . 'Model' . DS . 'Mysql' . DS)));

App::uses

https://book.cakephp.org/2.0/en/core-utility-libraries/app.html#App::uses

static App::uses(string $class, string $package)

关于 App::uses() 这个静态方法，官方文档是这么说的：

Classes are lazily loaded in CakePHP, however before the autoloader can find your classes you need to tell App, where it can find the files.
By telling App which package a class can be found in, it can properly locate the file and load it the first time a class is used.

也就是说 App::uses() 只是定义了要加载的类和类文件的路径，并没有将类文件加载进来。只有在第一次使用这个类时才会去加载。

Components

Components are packages of logic that are shared between controllers.

• 想在 Component 中使用 set 定义 views中的变量。
  google之后参考原生的PaginatorComponent，添加一下代码实现。

    public function __construct(ComponentCollection $collection, $settings = array()) {
        $settings = array_merge($this->settings, (array)$settings);
        $this->Controller = $collection->getController();
        parent::__construct($collection, $settings);
    }

• 如何在 controller 中手动加载 component

$cptName = $this->Components->load('componentName');