Call to a member function update() on null Laravel function

Question

What is wrong with this function? I ve got error on this line:
$user->update($input); Call to a member function update() on null
$input = $request->all();

if ($input == NULL) {
    return redirect()->route('users.index');
}

else {
    
    $user = User::find($id);
    
    $user->update($input);
    
    DB::table('model_has_roles')->where('model_id', $id)->delete();
    
    $user->assignRole($request->input('roles'));
    
    return redirect()->route('users.index')
        ->with('success', 'User updated successfully');
    
}

Habib · Answer

You can check if user has some data. Or you can findOrFail() instead of find().
$input = $request->all();

if ($input == NULL) {
    return redirect()->route('users.index');
}

else {
    
    $user = User::find($id);
    if ($user) {
        $user->update($input);
        
        DB::table('model_has_roles')->where('model_id', $id)->delete();
        
        $user->assignRole($request->input('roles'));
    }
    
    return redirect()->route('users.index')
        ->with('success', 'User updated successfully');
    
}

Call to a member function update() on null Laravel function

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