Validation of the update in the Standard

Question

I have a problem to validate the update on Laravel.

My Controller is like this:

public function editar(EspecieRequest $request, Especie $esp)
{
    $especie = Especie::find($esp->id_especie);
    $valores = Request::all();
    $especie->fill($valores)->save();

    return redirect()->action('EspecieController@lista');
}

My request is like this:

    public function messages()
    {
        return [
            'nome_especie.required' => 'O campo nome é necessário'. $this->id_especie,
...
        ];
    }

The error that the Laravel shows is this: "Call to a Member Function Fill() on null"

Answer 1

This error is caused when you use the function find and it does not find any corresponding result in the database for the ID of Model researched.

In such cases, I usually use findOrFail to avoid this kind of problem.

Example:

 $especie = Especie::findOrFail($request->id_especie);

If the result to id_especie is not found in the bank, an exception called ModelNotFoundException will be launched.

It’s even a good way, by the way, to prevent your code from running unexpectedly if the result is not returned.

In your code there is something that doesn’t seem to make much sense: You are receiving the Especie $esp as parameter, but is searching again in the database through another query?

If you are making bind of the object Especie through the routes, you may need to change your code just for this:

public function editar(EspecieRequest $request, Especie $esp)
{

    $valores = $request->all();

    $esp->fill($valores)->save();

    return redirect()->action('EspecieController@lista');
}