在Laravel中验证与另一个模型相关的模型
是否有可能使Laravel的验证规则像这样的伪代码在Laravel中验证与另一个模型相关的模型,laravel,laravel-4,laravel-validation,Laravel,Laravel 4,Laravel Validation,是否有可能使Laravel的验证规则像这样的伪代码 field1 in modelA must be lower than sum of field2, field3 and field4 from modelB 我不知道该怎么做…我不确定是否需要与具有特定ID的ModelB或任何ModelB条目的最低总和进行比较,因此下面是这两种情况的自定义验证规则 1.将ModelB与特定ID进行比较: 您可以添加任意多的字段进行求和(而不是像您的示例中那样仅添加3个字段)。验证程序代码如下所示: Val
field1 in modelA must be lower than sum of field2, field3 and field4 from modelB
我不知道该怎么做…我不确定是否需要与具有特定ID的ModelB或任何ModelB条目的最低总和进行比较,因此下面是这两种情况的自定义验证规则 1.将ModelB与特定ID进行比较: 您可以添加任意多的字段进行求和(而不是像您的示例中那样仅添加3个字段)。验证程序代码如下所示:
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,1,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Get id from second parameter
$id = array_shift($parameters);
// Create a model instance
$model = App::make($modelName)->find($id);
// Calculate sum
$sum = array_sum(array_map(function ($field) use ($model) {
return $model->{$field};
}, $parameters));
// Return validation result
return $value < $sum;
});
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Calculate sum
$sum = App::make($modelName)->select(DB::raw('(' . implode('+', $parameters) . ') as sum'))->get()->min('sum');
// Return validation result
return $value < $sum;
});
验证规则如下所示:
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,1,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Get id from second parameter
$id = array_shift($parameters);
// Create a model instance
$model = App::make($modelName)->find($id);
// Calculate sum
$sum = array_sum(array_map(function ($field) use ($model) {
return $model->{$field};
}, $parameters));
// Return validation result
return $value < $sum;
});
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Calculate sum
$sum = App::make($modelName)->select(DB::raw('(' . implode('+', $parameters) . ') as sum'))->get()->min('sum');
// Return validation result
return $value < $sum;
});
与前面的规则相同,但没有ID作为第二个参数。验证程序代码如下所示:
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,1,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Get id from second parameter
$id = array_shift($parameters);
// Create a model instance
$model = App::make($modelName)->find($id);
// Calculate sum
$sum = array_sum(array_map(function ($field) use ($model) {
return $model->{$field};
}, $parameters));
// Return validation result
return $value < $sum;
});
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Calculate sum
$sum = App::make($modelName)->select(DB::raw('(' . implode('+', $parameters) . ') as sum'))->get()->min('sum');
// Return validation result
return $value < $sum;
});
验证规则如下所示:
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,1,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Get id from second parameter
$id = array_shift($parameters);
// Create a model instance
$model = App::make($modelName)->find($id);
// Calculate sum
$sum = array_sum(array_map(function ($field) use ($model) {
return $model->{$field};
}, $parameters));
// Return validation result
return $value < $sum;
});
Validator::make(
array('field1' => 5),
array('field1' => 'lower:ModelB,field2,field3,field4')
);
Validator::extend('lower', function ($attribute, $value, $parameters)
{
// Get model name from first parameter
$modelName = array_shift($parameters);
// Calculate sum
$sum = App::make($modelName)->select(DB::raw('(' . implode('+', $parameters) . ') as sum'))->get()->min('sum');
// Return validation result
return $value < $sum;
});
Validator::extend('lower',function($attribute,$value,$parameters)
{
//从第一个参数获取模型名称
$modelName=array\u shift($parameters);
//求和
$sum=App::make($modelName)->选择(DB::raw(‘(‘(‘.内爆(‘+’,$parameters)。’)作为sum’)->get()->min(‘sum’);
//返回验证结果
返回$value<$sum;
});
这也可以使用表名和
DB
而不是模型来完成。我猜值是field1
是传递给验证器的值。不清楚的是,您是否希望该值低于ModelB表中任何条目的总和,或者仅低于具有特定ID的ModelB类型的条目。