yii2源码学习笔记(十三）

模型类DynamicModel主要用于实现模型内的数据验证yii2\base\DynamicModel.php

<span style="color: #008080;">  1</span> <span style="color: #000000;">php
</span><span style="color: #008080;">  2</span> <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">  3</span> <span style="color: #008000;"> * @link </span><span style="color: #008000; text-decoration: underline;">http://www.yiiframework.com/</span>
<span style="color: #008080;">  4</span> <span style="color: #008000;"> * @copyright Copyright (c) 2008 Yii Software LLC
</span><span style="color: #008080;">  5</span> <span style="color: #008000;"> * @license </span><span style="color: #008000; text-decoration: underline;">http://www.yiiframework.com/license/</span>
<span style="color: #008080;">  6</span>  <span style="color: #008000;">*/</span>
<span style="color: #008080;">  7</span> <span style="color: #0000ff;">namespace</span> yii\<span style="color: #0000ff;">base</span><span style="color: #000000;">;
</span><span style="color: #008080;">  8</span> 
<span style="color: #008080;">  9</span> <span style="color: #000000;">use yii\validators\Validator;
</span><span style="color: #008080;"> 10</span> 
<span style="color: #008080;"> 11</span> <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;"> 12</span> <span style="color: #008000;"> * DynamicModel is a model class primarily used to support ad hoc data validation.
</span><span style="color: #008080;"> 13</span> <span style="color: #008000;"> * DynamicModel是一种主要用于支持ad hoc数据验证模型类
</span><span style="color: #008080;"> 14</span> <span style="color: #008000;"> * The typical usage of DynamicModel is as follows,
</span><span style="color: #008080;"> 15</span> <span style="color: #008000;"> *
</span><span style="color: #008080;"> 16</span> <span style="color: #008000;"> * ```php
</span><span style="color: #008080;"> 17</span> <span style="color: #008000;"> * public function actionSearch($name, $email)
</span><span style="color: #008080;"> 18</span> <span style="color: #008000;"> * {
</span><span style="color: #008080;"> 19</span> <span style="color: #008000;"> *     $model = DynamicModel::validateData(compact('name', 'email'), [
</span><span style="color: #008080;"> 20</span> <span style="color: #008000;"> *         [['name', 'email'], 'string', 'max' => 128],
</span><span style="color: #008080;"> 21</span> <span style="color: #008000;"> *         ['email', 'email'],
</span><span style="color: #008080;"> 22</span> <span style="color: #008000;"> *     ]);
</span><span style="color: #008080;"> 23</span> <span style="color: #008000;"> *     if ($model->hasErrors()) {
</span><span style="color: #008080;"> 24</span> <span style="color: #008000;"> *         // validation fails
</span><span style="color: #008080;"> 25</span> <span style="color: #008000;"> *     } else {
</span><span style="color: #008080;"> 26</span> <span style="color: #008000;"> *         // validation succeeds
</span><span style="color: #008080;"> 27</span> <span style="color: #008000;"> *     }
</span><span style="color: #008080;"> 28</span> <span style="color: #008000;"> * }
</span><span style="color: #008080;"> 29</span> <span style="color: #008000;"> * ```
</span><span style="color: #008080;"> 30</span> <span style="color: #008000;"> *
</span><span style="color: #008080;"> 31</span> <span style="color: #008000;"> * The above example shows how to validate `$name` and `$email` with the help of DynamicModel.
</span><span style="color: #008080;"> 32</span> <span style="color: #008000;"> * 上面的例子演示了如何用DynamicModel验证用户名`$name`和邮箱`$email`
</span><span style="color: #008080;"> 33</span> <span style="color: #008000;"> * The [[validateData()]] method creates an instance of DynamicModel, defines the attributes
</span><span style="color: #008080;"> 34</span> <span style="color: #008000;"> * using the given data (`name` and `email` in this example), and then calls [[Model::validate()]].
</span><span style="color: #008080;"> 35</span> <span style="color: #008000;"> * validateData() 方法会创建一个 DynamicModel 的实例对象。通过给定数据定义模型特性，之后调用Model::validate() 方法。
</span><span style="color: #008080;"> 36</span> <span style="color: #008000;"> * You can check the validation result by [[hasErrors()]], like you do with a normal model.
</span><span style="color: #008080;"> 37</span> <span style="color: #008000;"> * You may also access the dynamic attributes defined through the model instance, e.g.,
</span><span style="color: #008080;"> 38</span> <span style="color: #008000;"> * 可以通过[[hasErrors()]]方法获取验证结果
</span><span style="color: #008080;"> 39</span> <span style="color: #008000;"> * `$model->name` and `$model->email`.
</span><span style="color: #008080;"> 40</span> <span style="color: #008000;"> *
</span><span style="color: #008080;"> 41</span> <span style="color: #008000;"> * Alternatively, you may use the following more "classic" syntax to perform ad-hoc data validation:
</span><span style="color: #008080;"> 42</span> <span style="color: #008000;"> *  除此之外，你也可以用如下的更加“classic（传统）”的语法来执行临时数据验
</span><span style="color: #008080;"> 43</span> <span style="color: #008000;"> * ```php
</span><span style="color: #008080;"> 44</span> <span style="color: #008000;"> * $model = new DynamicModel(compact('name', 'email'));
</span><span style="color: #008080;"> 45</span> <span style="color: #008000;"> * $model->addRule(['name', 'email'], 'string', ['max' => 128])
</span><span style="color: #008080;"> 46</span> <span style="color: #008000;"> *     ->addRule('email', 'email')
</span><span style="color: #008080;"> 47</span> <span style="color: #008000;"> *     ->validate();
</span><span style="color: #008080;"> 48</span> <span style="color: #008000;"> * ```
</span><span style="color: #008080;"> 49</span> <span style="color: #008000;"> *
</span><span style="color: #008080;"> 50</span> <span style="color: #008000;"> * DynamicModel implements the above ad-hoc data validation feature by supporting the so-called
</span><span style="color: #008080;"> 51</span> <span style="color: #008000;"> * "dynamic attributes". It basically allows an attribute to be defined dynamically through its constructor
</span><span style="color: #008080;"> 52</span> <span style="color: #008000;"> * or [[defineAttribute()]].
</span><span style="color: #008080;"> 53</span> <span style="color: #008000;"> * 实现了上述特殊数据模型验证功能支持的“动态属性”。允许通过它的构造函数或 [[defineAttribute()]]来定义一个属性
</span><span style="color: #008080;"> 54</span> <span style="color: #008000;"> * @author Qiang Xue <qiang.xue>
</qiang.xue></span><span style="color: #008080;"> 55</span> <span style="color: #008000;"> * @since 2.0
</span><span style="color: #008080;"> 56</span>  <span style="color: #008000;">*/</span>
<span style="color: #008080;"> 57</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> DynamicModel extends Model
</span><span style="color: #008080;"> 58</span> <span style="color: #000000;">{
</span><span style="color: #008080;"> 59</span>     <span style="color: #0000ff;">private</span> $_attributes = [];<span style="color: #008000;">//</span><span style="color: #008000;">动态模型内动态属性</span>
<span style="color: #008080;"> 60</span> 
<span style="color: #008080;"> 61</span> 
<span style="color: #008080;"> 62</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;"> 63</span> <span style="color: #008000;">     * Constructors.构造函数，用于将传入的属性赋值给_attributes，便于使用
</span><span style="color: #008080;"> 64</span> <span style="color: #008000;">     * @param array $attributes the dynamic attributes (name-value pairs, or names) being defined被定义的动态属性
</span><span style="color: #008080;"> 65</span> <span style="color: #008000;">     * @param array $config the configuration array to be applied to this object.用于该对象的配置数组。
</span><span style="color: #008080;"> 66</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;"> 67</span>     <span style="color: #0000ff;">public</span> function __construct(array $attributes = [], $config =<span style="color: #000000;"> [])
</span><span style="color: #008080;"> 68</span> <span style="color: #000000;">    {
</span><span style="color: #008080;"> 69</span>         <span style="color: #0000ff;">foreach</span> ($attributes <span style="color: #0000ff;">as</span> $name => $value) {<span style="color: #008000;">//</span><span style="color: #008000;">遍历传入的属性</span>
<span style="color: #008080;"> 70</span>             <span style="color: #0000ff;">if</span> (is_integer($name)) {<span style="color: #008000;">//</span><span style="color: #008000;">如果是整型，说明只传入了属性名，将属性名写入_attributes</span>
<span style="color: #008080;"> 71</span>                 $<span style="color: #0000ff;">this</span>->_attributes[$value] = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
</span><span style="color: #008080;"> 72</span>             } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;"> 73</span>                 $<span style="color: #0000ff;">this</span>->_attributes[$name] = $value;<span style="color: #008000;">//</span><span style="color: #008000;">按键值对的形式写入</span>
<span style="color: #008080;"> 74</span> <span style="color: #000000;">            }
</span><span style="color: #008080;"> 75</span> <span style="color: #000000;">        }
</span><span style="color: #008080;"> 76</span>         parent::__construct($config);<span style="color: #008000;">//</span><span style="color: #008000;">调用父类的配置</span>
<span style="color: #008080;"> 77</span> <span style="color: #000000;">    }
</span><span style="color: #008080;"> 78</span> 
<span style="color: #008080;"> 79</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;"> 80</span> <span style="color: #008000;">     * @inheritdoc 重写__get方法，从_attributes中取值
</span><span style="color: #008080;"> 81</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;"> 82</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function __get($name)
</span><span style="color: #008080;"> 83</span> <span style="color: #000000;">    {
</span><span style="color: #008080;"> 84</span>         <span style="color: #0000ff;">if</span> (array_key_exists($name, $<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes)) {
</span><span style="color: #008080;"> 85</span>             <span style="color: #008000;">//</span><span style="color: #008000;">如果传入的$name在数组_attributes中存在，则从_attributes中取值</span>
<span style="color: #008080;"> 86</span>             <span style="color: #0000ff;">return</span> $<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes[$name];
</span><span style="color: #008080;"> 87</span>         } <span style="color: #0000ff;">else</span> {<span style="color: #008000;">//</span><span style="color: #008000;">否则调用父类的__get方法取属性值</span>
<span style="color: #008080;"> 88</span>             <span style="color: #0000ff;">return</span><span style="color: #000000;"> parent::__get($name);
</span><span style="color: #008080;"> 89</span> <span style="color: #000000;">        }
</span><span style="color: #008080;"> 90</span> <span style="color: #000000;">    }
</span><span style="color: #008080;"> 91</span> 
<span style="color: #008080;"> 92</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;"> 93</span> <span style="color: #008000;">     * @inheritdoc 重写__set方法，给_attributes设置值
</span><span style="color: #008080;"> 94</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;"> 95</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function __set($name, $value)
</span><span style="color: #008080;"> 96</span> <span style="color: #000000;">    {
</span><span style="color: #008080;"> 97</span>         <span style="color: #0000ff;">if</span> (array_key_exists($name, $<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes)) {
</span><span style="color: #008080;"> 98</span>             <span style="color: #008000;">//</span><span style="color: #008000;">如果传入的$name在数组_attributes中存在，则将动态属性$name的值设置为$value</span>
<span style="color: #008080;"> 99</span>             $<span style="color: #0000ff;">this</span>->_attributes[$name] =<span style="color: #000000;"> $value;
</span><span style="color: #008080;">100</span>         } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;">101</span>             parent::__set($name, $value);<span style="color: #008000;">//</span><span style="color: #008000;">调用父类的__set方法设置属性值</span>
<span style="color: #008080;">102</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">103</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">104</span> 
<span style="color: #008080;">105</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">106</span> <span style="color: #008000;">     * @inheritdoc 同上 重写__isset方法，判断_attributes中是否设置$name值
</span><span style="color: #008080;">107</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">108</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function __isset($name)
</span><span style="color: #008080;">109</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">110</span>         <span style="color: #0000ff;">if</span> (array_key_exists($name, $<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes)) {
</span><span style="color: #008080;">111</span>             <span style="color: #0000ff;">return</span> isset($<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes[$name]);
</span><span style="color: #008080;">112</span>         } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;">113</span>             <span style="color: #0000ff;">return</span><span style="color: #000000;"> parent::__isset($name);
</span><span style="color: #008080;">114</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">115</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">116</span> 
<span style="color: #008080;">117</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">118</span> <span style="color: #008000;">     * @inheritdoc 同上，重写__unset方法，删除_attributes中的$name属性值
</span><span style="color: #008080;">119</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">120</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function __unset($name)
</span><span style="color: #008080;">121</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">122</span>         <span style="color: #0000ff;">if</span> (array_key_exists($name, $<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes)) {
</span><span style="color: #008080;">123</span>             unset($<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes[$name]);
</span><span style="color: #008080;">124</span>         } <span style="color: #0000ff;">else</span><span style="color: #000000;"> {
</span><span style="color: #008080;">125</span> <span style="color: #000000;">            parent::__unset($name);
</span><span style="color: #008080;">126</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">127</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">128</span> 
<span style="color: #008080;">129</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">130</span> <span style="color: #008000;">     * Defines an attribute. 定义动态属性的方法
</span><span style="color: #008080;">131</span> <span style="color: #008000;">     * @param string $name the attribute name   属性名
</span><span style="color: #008080;">132</span> <span style="color: #008000;">     * @param mixed $value the attribute value  属性值
</span><span style="color: #008080;">133</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">134</span>     <span style="color: #0000ff;">public</span> function defineAttribute($name, $value = <span style="color: #0000ff;">null</span><span style="color: #000000;">)
</span><span style="color: #008080;">135</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">136</span>         $<span style="color: #0000ff;">this</span>->_attributes[$name] =<span style="color: #000000;"> $value;
</span><span style="color: #008080;">137</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">138</span> 
<span style="color: #008080;">139</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">140</span> <span style="color: #008000;">     * Undefines an attribute. 用于删除动态属性的方法
</span><span style="color: #008080;">141</span> <span style="color: #008000;">     * @param string $name the attribute name 属性名
</span><span style="color: #008080;">142</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">143</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function undefineAttribute($name)
</span><span style="color: #008080;">144</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">145</span>         unset($<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes[$name]);
</span><span style="color: #008080;">146</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">147</span> 
<span style="color: #008080;">148</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">149</span> <span style="color: #008000;">     * Adds a validation rule to this model.    添加验证规则
</span><span style="color: #008080;">150</span> <span style="color: #008000;">     * You can also directly manipulate [[validators]] to add or remove validation rules.
</span><span style="color: #008080;">151</span> <span style="color: #008000;">     * This method provides a shortcut.
</span><span style="color: #008080;">152</span> <span style="color: #008000;">     * 可以直接调用[[validators]]来添加或者删除验证规则，本方法提供了一个短方法
</span><span style="color: #008080;">153</span> <span style="color: #008000;">     * @param string|array $attributes the attribute(s) to be validated by the rule 进行验证的属性
</span><span style="color: #008080;">154</span> <span style="color: #008000;">     * @param mixed $validator the validator for the rule.This can be a built-in validator name,
</span><span style="color: #008080;">155</span> <span style="color: #008000;">     * a method name of the model class, an anonymous function, or a validator class name.
</span><span style="color: #008080;">156</span> <span style="color: #008000;">     * 规则的验证。这是一个内置验证器的名字， 一个模型类的方法名，一个匿名函数或一个验证器类的名称。
</span><span style="color: #008080;">157</span> <span style="color: #008000;">     * @param array $options the options (name-value pairs) to be applied to the validator
</span><span style="color: #008080;">158</span> <span style="color: #008000;">     *  (name-value)被应用到验证器
</span><span style="color: #008080;">159</span> <span style="color: #008000;">     * @return static the model itself  模型本身
</span><span style="color: #008080;">160</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">161</span>     <span style="color: #0000ff;">public</span> function addRule($attributes, $validator, $options =<span style="color: #000000;"> [])
</span><span style="color: #008080;">162</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">163</span>         $validators = $<span style="color: #0000ff;">this</span>->getValidators();<span style="color: #008000;">//</span><span style="color: #008000;">所有的验证规则对象
</span><span style="color: #008080;">164</span>         <span style="color: #008000;">//</span><span style="color: #008000;">生成Validator对象，并且插入 $validators中</span>
<span style="color: #008080;">165</span>         $validators->append(Validator::createValidator($validator, $<span style="color: #0000ff;">this</span><span style="color: #000000;">, (array) $attributes, $options));
</span><span style="color: #008080;">166</span> 
<span style="color: #008080;">167</span>         <span style="color: #0000ff;">return</span> $<span style="color: #0000ff;">this</span><span style="color: #000000;">;
</span><span style="color: #008080;">168</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">169</span> 
<span style="color: #008080;">170</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">171</span> <span style="color: #008000;">     * Validates the given data with the specified validation rules.通过指定的规则验证给定的数据
</span><span style="color: #008080;">172</span> <span style="color: #008000;">     * This method will create a DynamicModel instance, populate it with the data to be validated,
</span><span style="color: #008080;">173</span> <span style="color: #008000;">     * create the specified validation rules, and then validate the data using these rules.
</span><span style="color: #008080;">174</span> <span style="color: #008000;">     * @param array $data the data (name-value pairs) to be validated
</span><span style="color: #008080;">175</span> <span style="color: #008000;">     * @param array $rules the validation rules. Please refer to [[Model::rules()]] on the format of this parameter.
</span><span style="color: #008080;">176</span> <span style="color: #008000;">     * @return static the model instance that contains the data being validated
</span><span style="color: #008080;">177</span> <span style="color: #008000;">     * @throws InvalidConfigException if a validation rule is not specified correctly.
</span><span style="color: #008080;">178</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">179</span>     <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> function validateData(array $data, $rules =<span style="color: #000000;"> [])
</span><span style="color: #008080;">180</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">181</span>         <span style="color: #008000;">/*</span><span style="color: #008000;"> @var $model DynamicModel </span><span style="color: #008000;">*/</span>
<span style="color: #008080;">182</span>         $model = <span style="color: #0000ff;">new</span> <span style="color: #0000ff;">static</span>($data);<span style="color: #008000;">//</span><span style="color: #008000;">实例化调用类，将$data赋值给_attributes</span>
<span style="color: #008080;">183</span>         <span style="color: #0000ff;">if</span> (!<span style="color: #000000;">empty($rules)) {
</span><span style="color: #008080;">184</span>             $validators = $model->getValidators();<span style="color: #008000;">//</span><span style="color: #008000;">获取所有定义的验证规则</span>
<span style="color: #008080;">185</span>             <span style="color: #0000ff;">foreach</span> ($rules <span style="color: #0000ff;">as</span><span style="color: #000000;"> $rule) {
</span><span style="color: #008080;">186</span>                 <span style="color: #0000ff;">if</span><span style="color: #000000;"> ($rule instanceof Validator) {
</span><span style="color: #008080;">187</span>                     $validators->append($rule);<span style="color: #008000;">//</span><span style="color: #008000;">如果$rule是Validator的实例，则添加到$validators中</span>
<span style="color: #008080;">188</span>                 } elseif (is_array($rule) && isset($rule[<span style="color: #800080;">0</span>], $rule[<span style="color: #800080;">1</span>])) { <span style="color: #008000;">//</span><span style="color: #008000;"> attributes, validator type
</span><span style="color: #008080;">189</span>                      <span style="color: #008000;">//</span><span style="color: #008000;">如果$rule是数组，则判断动态属性和验证类型是否存在，创建Validator对象，添加到$validators中</span>
<span style="color: #008080;">190</span>                     $validator = Validator::createValidator($rule[<span style="color: #800080;">1</span>], $model, (array) $rule[<span style="color: #800080;">0</span>], array_slice($rule, <span style="color: #800080;">2</span><span style="color: #000000;">));
</span><span style="color: #008080;">191</span>                     $validators-><span style="color: #000000;">append($validator);
</span><span style="color: #008080;">192</span>                 } <span style="color: #0000ff;">else</span> {<span style="color: #008000;">//</span><span style="color: #008000;">抛出异常</span>
<span style="color: #008080;">193</span>                     <span style="color: #0000ff;">throw</span> <span style="color: #0000ff;">new</span> InvalidConfigException(<span style="color: #800000;">'</span><span style="color: #800000;">Invalid validation rule: a rule must specify both attribute names and validator type.</span><span style="color: #800000;">'</span><span style="color: #000000;">);
</span><span style="color: #008080;">194</span> <span style="color: #000000;">                }
</span><span style="color: #008080;">195</span> <span style="color: #000000;">            }
</span><span style="color: #008080;">196</span> <span style="color: #000000;">        }
</span><span style="color: #008080;">197</span> 
<span style="color: #008080;">198</span>         $model->validate();<span style="color: #008000;">//</span><span style="color: #008000;">执行验证</span>
<span style="color: #008080;">199</span> 
<span style="color: #008080;">200</span>         <span style="color: #0000ff;">return</span><span style="color: #000000;"> $model;
</span><span style="color: #008080;">201</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">202</span> 
<span style="color: #008080;">203</span>     <span style="color: #008000;">/*</span><span style="color: #008000;">*
</span><span style="color: #008080;">204</span> <span style="color: #008000;">     * @inheritdoc  返回所有的动态属性
</span><span style="color: #008080;">205</span>      <span style="color: #008000;">*/</span>
<span style="color: #008080;">206</span>     <span style="color: #0000ff;">public</span><span style="color: #000000;"> function attributes()
</span><span style="color: #008080;">207</span> <span style="color: #000000;">    {
</span><span style="color: #008080;">208</span>         <span style="color: #0000ff;">return</span> array_keys($<span style="color: #0000ff;">this</span>-><span style="color: #000000;">_attributes);
</span><span style="color: #008080;">209</span> <span style="color: #000000;">    }
</span><span style="color: #008080;">210</span> }