laravel 验证

1、在Model中定义验证规则

如Article

public static $rules = [
        'title'      => 'required',
        'category_id'  => 'required',
        'content'       => 'required',
    ];

2、在Controller中使用验证

$validator = Validator::make($request->all(), Article::$rules);
        if ($validator->fails()) {
            return redirect($redirect)
                        ->withErrors($validator)
                        ->withInput();
        }

3、添加验证错误提示

把resources/lang/en下的validation.phpfu复制到zh-CN文件夹下

把里面不需要的信息都清理掉

根据说明

在语言文件中指定自定义消息

在很多案例中，你可能想要在语言文件中指定自定义消息而不是将它们直接传递给 Validator。要实现这个，添加消息到 resources/lang/xx/validation.php 语言文件的 custom 数组：

'custom' => [
    'email' => [
        'required' => '邮箱地址不能为空!',
    ],
],

在语言文件中指定自定义属性

如果你想要将验证消息的 :attribute 部分替换成自定义属性名称，可以在语言文件 resources/lang/xx/validation.php 的 attributes 数组中指定自定义名称：

'attributes' => [
    'email' => '邮箱地址',
],

 我们只需要保留custom和attributes即可

添加验证错误提示

 /*
    |--------------------------------------------------------------------------
    | Custom Validation Language Lines
    |--------------------------------------------------------------------------
    |
    | Here you may specify custom validation messages for attributes using the
    | convention "attribute.rule" to name the lines. This makes it quick to
    | specify a specific custom language line for a given attribute rule.
    |
    */

    'custom' => [
        'title' => [
            'required' => '标题不能为空!'
        ],
        'category_id' => [
            'required' => '分类不能为空!'
        ],
        'content' => [
            'required' => '内容不能为空!'
        ],
    ],

    /*
    |--------------------------------------------------------------------------
    | Custom Validation Attributes
    |--------------------------------------------------------------------------
    |
    | The following language lines are used to swap attribute place-holders
    | with something more reader friendly such as E-Mail Address instead
    | of "email". This simply helps us make messages a little cleaner.
    |
    */

    'attributes' => [
        'title' => '标题',
        'category_id' => '分类',
        'content' => '内容',
    ],

4、使用验证

public function error_html($key, $errors) {
        $html = '';
        if(!empty($errors)) {
            if($errors->has($key)) {
                $html .= '<label class="control-label error-label">';
                foreach ($errors->get($key) as $message) {
                    $html .= $message .'&nbsp;&nbsp;';
                }
                $html .= '</label>';
            }
        }
        return $html;
    }