Laravel Eloquent $model->save() not saving but no error

Check your database table if the 'id' column is in uppercase 'ID'. Changing it to lower case allowed my save() method to work.

I had the same and turned out to be because I was filtering the output columns without the primary key.

$rows = MyModel::where('...')->select('col2', 'col3')->get();foreach($rows as $row){    $rows->viewed = 1;    $rows->save();}

Fixed with

$rows = MyModel::where('...')->select('primary_key', 'col2', 'col3')->get();

Makes perfect sense on review, without the primary key available the update command will be on Null.

Since Laravel 5.5 laravel have change some validation mechanism I guess you need to try this way.

public function store(Request $request, $id){    $post = Post::findOrFail($id);    $validatedData = [];    // Request validation    if ($post->type == 1) {        // Post type has title        $validatedData = $request->validate([          'title' => 'required|min:15',          'body' => 'required|min:19',      ]);    } else {      $validatedData = $request->validate([        'body' => 'required|min:19',    ]);    }    $post->update($validatedData);    return redirect('/');}