为模型Kc创建验证器
在application\index下创建validate目录,并创建一个与kc表同名的类文件: Kc.php
<?php
namespace app\index\validate;
use think\validate;
//验证器
class Kc extends Validate
{
//创建验证规则
protected $rule = [
'mc' => 'require|min:4|max:20',
'sl' => 'require|between:0,1000',
'dj' => 'require|gt:0'
];
//自定义错误信息
protected $message = [
'mc.require' => '品名不能为空！',
'mc.min' => '品名不能少于4个字符！',
'mc.max' => '品名不能多于20个字符！',
'sl.require' => '库存数量必须填写！',
'sl.between' => '库存数量必须大于零且小于1000！',
'dj.require' => '单价必须填写！',
'dj.gt' => '单价必须大于零！'
];
}在application\index\controller下创建Verify.php类用于调用验证器
<?php
namespace app\index\controller;
use think\Controller;
use app\index\validate\Kc;
class Verify extends Controller
{
public function kcverify(){
//模拟用户输入的数据
$data = [
'mc' => 'qwwwx',
'sl' => 2,
'dj' => 10,
];
//实例化验证器
$validate = new Kc();
if (!$validate->check($data)) {
dump($validate->getError());
} else {
return '验证通过';
}
}
}
