Laravel 5.6 - 只有在更改后才能保存

Question

I have a Laravel 5.6 project and am trying to update a post from a form like this

<input name="email" type="text" class="form-control" placeholder="Email" value="{{$user->email}}" required>

In my PostsController I have this...

    if($request->input('email')) {
        $user->email = $request->input('email');
    }

I wanted it to only update the email if a new one has been input in the form, but because I am pre-populating the form fields it always passes the IF.

Is there a more Laravel way to do this? I have looked at isDirty() but I am not sure it is the correct thing to use.

Answer 1

The save() method will check if something in the model has changed. If there is no change it won't run a db query. So you don't need to explicitly write a code for that. Still if you want to use isDirty method you can write as follows

if($test->isDirty()){
    // changes have been made
}

Or if you want to check a certain attribute:

if($test->isDirty('email')){
   // email has changed
}