Yii2 使用核心验证器:比对日期值,新增验证规则(条件式验证:当一个日期值不为空时,另一个日期值必填)

1、实现一个获取文章列表的接口,需要基于日期控件查询数据,如图1

图1

2、验证规则配置如下

 ['from_created_at', 'datetime', 'format' => 'php:Y-m-d H:i:s', 'timestampAttribute' => 'from_created_at', 'on' => 'index'], //index
 ['to_created_at', 'datetime', 'format' => 'php:Y-m-d H:i:s', 'timestampAttribute' => 'to_created_at', 'on' => 'index'], //index
 ['from_created_at', 'compare', 'compareAttribute' => 'to_created_at', 'operator' => '<', 'enableClientValidation' => false], //index

3、from_created_at、to_created_at皆为空,验证通过,如图2

图2

4、日期(datetime,例:2017-03-03 12:05:54):from_created_at、to_created_at;验证不通过,如图3

图3

{
    "code": 20004,
    "message": "数据验证失败:属性 From Created At 的格式无效。"
}

5、比对日期值(from_created_at < to_created_at):from_created_at, to_created_at;验证不通过,如图4

图4

{
    "code": 20004,
    "message": "数据验证失败:From Created At的值必须小于\"To Created At\"。"
}

6、如果from_created_at不为空,to_created_at为空,验证不通过,如图5

图5

{
    "code": 20004,
    "message": "数据验证失败:From Created At的值必须小于\"To Created At\"。"
}

7、如果from_created_at为空,to_created_at不为空,验证通过,不符合预期,预期:或者皆为空,或者皆不为空

8、验证规则配置如下,只有在一个日期值不为空时,才验证另一个日期值为必填

 ['from_created_at', 'datetime', 'format' => 'php:Y-m-d H:i:s', 'timestampAttribute' => 'from_created_at', 'on' => 'index'], //index
 ['to_created_at', 'datetime', 'format' => 'php:Y-m-d H:i:s', 'timestampAttribute' => 'to_created_at', 'on' => 'index'], //index
 ['from_created_at', 'required', 'when' => function($model) {
  return !empty($model->to_created_at);
 }], //index
 ['to_created_at', 'required', 'when' => function($model) {
  return !empty($model->from_created_at);
 }], //index
 ['from_created_at', 'compare', 'compareAttribute' => 'to_created_at', 'operator' => '<', 'enableClientValidation' => false], //index
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