带有动态消息的Laravel自定义验证规则

时间：2015-10-14 16:38:36

标签： php laravel laravel-5 laravel-5.1

我有一个请求，要求添加一个带有自定义验证方法的节目，用于检查是否已存在与日期和时间冲突的节目。如果方法失败，我想在验证错误消息中说明它与哪个显示冲突。 

class ShowStoreRequest extends Request {

    public function rules()
    {
        Validator::extend('time_clash_check', function($attribute, $value, $parameters)
        {
            list($day, $month, $year) = explode('/', $value);
            $date = $year.'-'.$month.'-'.$day;
            $start_time = $parameters[0];
            $end_time = $parameters[1];
            $show_id = $parameters[2];

            $query = Show::where('date', '=', $date)->where(function($q) use ($start_time, $end_time) {
                // show overlaps beginning of another show
                $q->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('start_time', '<=', $end_time)
                      ->where('end_time', '>=', $end_time);

                // show is in the middle of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $end_time);

                // show overlaps the end of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);

                // show completely overlaps another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);
                });
            });

            if(!is_null($show_id)) {
                $query->where('id', '!=', $show_id);
            }

            $existing_show = $query->first();

            if(is_null($existing_show)) {
                return true;
            } else {
                return false;
            }
        });

        $rules = [
            'name' => 'required|max:255',
            'show_code' => 'required|alpha_num|min:10|max:11',
            'url_slug' => ['required', 'max:255', 'regex:/^[a-z0-9-_]+$/'],
            'youtube_url' => 'url',
            'name' => 'required|max:255',
            'date' => ['regex:/[0-9]{2}\/[0-9]{2}\/[0-9]{2}/', 'time_clash_check:'.$this->start_time.','.$this->end_time.','.$this->route('id')],
            'start_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/'],
            'end_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/']
        ];
    }
}

因此，如果time_clash_check失败，我想在错误消息中输出$existing_show->name的值，告诉他们哪个显示它与之冲突。我该怎么做？

1 个答案:

答案 0 :(得分：3)

将此添加到您的请求文件中：

class ShowStoreRequest extends Request {

    public $exists;

    public function rules()
    {
        Validator::extend('time_clash_check', function($attribute, $value, $parameters)
        {
            list($day, $month, $year) = explode('/', $value);
            $date = $year.'-'.$month.'-'.$day;
            $start_time = $parameters[0];
            $end_time = $parameters[1];
            $show_id = $parameters[2];

            $query = Show::where('date', '=', $date)->where(function($q) use ($start_time, $end_time) {
                // show overlaps beginning of another show
                $q->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('start_time', '<=', $end_time)
                      ->where('end_time', '>=', $end_time);

                // show is in the middle of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $end_time);

                // show overlaps the end of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);

                // show completely overlaps another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);
                });
            });

            if(!is_null($show_id)) {
                $query->where('id', '!=', $show_id);
            }

            $existing_show = $query->first();

            if(is_null($existing_show)) {
                return true;
            } else {
                $this->exists = $existing_show->name;
                return false;
            }
        });

        $rules = [
            'name' => 'required|max:255',
            'show_code' => 'required|alpha_num|min:10|max:11',
            'url_slug' => ['required', 'max:255', 'regex:/^[a-z0-9-_]+$/'],
            'youtube_url' => 'url',
            'name' => 'required|max:255',
            'date' => ['regex:/[0-9]{2}\/[0-9]{2}\/[0-9]{2}/', 'time_clash_check:'.$this->start_time.','.$this->end_time.','.$this->route('id')],
            'start_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/'],
            'end_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/']
        ];
    }
}

public function messages()
{
    return [
        'time_clash_check ' => $this->exists . ' has clashed'
    ];
}

修改

好的，所以，我找出了问题所在。这是解决方案：

class ShowStoreRequest extends Request {

    public $exists;

    public function rules()
    {
        Validator::extend('time_clash_check', function($attribute, $value, $parameters)
        {
            list($day, $month, $year) = explode('/', $value);
            $date = $year.'-'.$month.'-'.$day;
            $start_time = $parameters[0];
            $end_time = $parameters[1];
            $show_id = $parameters[2];

            $query = Show::where('date', '=', $date)->where(function($q) use ($start_time, $end_time) {
                // show overlaps beginning of another show
                $q->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('start_time', '<=', $end_time)
                      ->where('end_time', '>=', $end_time);

                // show is in the middle of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $end_time);

                // show overlaps the end of the another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '<=', $start_time)
                      ->where('end_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);

                // show completely overlaps another show
                })->orWhere(function($q) use ($start_time, $end_time) {
                    $q->where('start_time', '>=', $start_time)
                      ->where('end_time', '<=', $end_time);
                });
            });

            if(!is_null($show_id)) {
                $query->where('id', '!=', $show_id);
            }

            $existing_show = $query->first();

            if(is_null($existing_show)) {
                return true;
            } else {
                $this->exists = $existing_show->name;
                return false;
            }
        });

        Validator::replacer('time_clash_check', function($message, $attribute, $rule, $parameters) {
            return str_replace(':variable', $this->exists, $message);
        });    

        $rules = [
            'name' => 'required|max:255',
            'show_code' => 'required|alpha_num|min:10|max:11',
            'url_slug' => ['required', 'max:255', 'regex:/^[a-z0-9-_]+$/'],
            'youtube_url' => 'url',
            'name' => 'required|max:255',
            'date' => ['regex:/[0-9]{2}\/[0-9]{2}\/[0-9]{2}/', 'time_clash_check:'.$this->start_time.','.$this->end_time.','.$this->route('id')],
            'start_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/'],
            'end_time' => ['regex:/[0-9]{1,2}\:[0-9]{2}\:[0-9]{2}/']
        ];
    }
}

public function messages()
{
    return [
        'time_clash_check ' => ':variable has clashed'
    ];
}

这应该解决问题。

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