Laravel 5 isDirty() 总是返回 false
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Laravel 5 isDirty() always returns false
提问by Вилислав Венков
I want to check if the model has been changed with isDirty method, but always returns false.
我想检查模型是否已使用 isDirty 方法更改，但始终返回 false。
This is my code :
这是我的代码：
if (!is_null($partnersData)) {
foreach ($partnersData as $partnerData) {
$partner = Partner::find($partnerData['partner_id']);
$partner->update($partnerData);
if($partner->isDirty()){
dd('true');
}
}
}
回答by noodles_ftw
$model->update()updates and saves the model. Therefore, $model->isDirty()equals false as the model has not been changed since the last executed query (which queries the database to save the model).
$model->update()更新并保存模型。因此，$model->isDirty()等于 false 因为自上次执行查询（查询数据库以保存模型）以来模型没有更改。
Try updating the model like this:
尝试像这样更新模型：
$partner = Partner::find($id);
foreach ($partnerData as $column => $value) {
if ($column === 'id') continue;
$partner->$column = $value;
}
if ($partner->isDirty()) {
// should be dirty now
}
$partner->save(); // $partner will be not-dirty from here
