Laravel验证之间不将逗号分隔的字符串转换为数组？

Question

Just trying to do some tags validation. First checking for number of tags (as comma separated list of id's).

class SomePostRequest extends Request
{
    public function rules()
    {
        return [
            'tags' => 'between:2,5'
        ];
    }


    public function all()
    {
        $input = parent::all();

        $input['tags'] = explode(',', @$input['tags']);

        return $input;
    }

}

It keeps spititing out the message as

The tags must be between 2 and 5 characters.

Instead of the proper array message:

The :attribute must have between :min and :max items.

Answer 1

Try to use custom validation rule for you requirement:

$this->app['validator']->extend('tag', function ($attribute, $value, $parameters)
{
    $tags = explode(',', $value);
    if(count($tags) >= 2 || count($tags) <= 5)){
        return false;
    }
});

and then rules would be

public function rules(){
    return [
        'tags' => ['tag']
    ];
}

and message can update by

public function messages() {
        return [
            'tags.tag' => 'The :attribute must have between :min and :max items.'];

}

I hope, you get basic idea to achieve this requirement, let me know if its helps.