Undefined array key but with dd() works-CodePudding

I've done a query at Laravel and to check result content, I've used dd, but, for some reason, when I remove the dd(), it throws an exception sayint "Undefined array key 0". However, with dd DO find the key.

Code is this:

public function getFormatosArticulo(Articulo $articulo){
    $formatoRaw = Formato::where('articulo_id', '=', $articulo->id)->get();
    dd($formatoRaw[0]);
    $formato = $formatoRaw[0];
    return $formato;
}

And dd output is this:

CodePudding user response：

The reason this happens is that dd stands for “dump and die” so your first iteration goes through but you don’t check the rest because you use die(). A solution to this can be as simple as:

public function getFormatosArticulo(Articulo $articulo) {
    $formatoRaw = Formato::where('articulo_id', '=', $articulo->id)->get();
    if ($formatoRaw) {
        $formato = $formatoRaw[0];
        return $formato;
    }
}

CodePudding user response：

I guess you are calling getFormatosArticulo function for multiple times, and passed not exists id into it. The get() function will always return a empty collection even if no data matched.

Can you test your function use code below and check if id does exists or not?

public function getFormatosArticulo(Articulo $articulo){
    try {
        $formatoRaw = Formato::where('articulo_id', '=', $articulo->id)->get();
        $formato = $formatoRaw[0];
        return $formato;
    catch (Exception $e) {
        dd($articulo->id); // i guess there is no articulo_id equal this in formato table.
    }
}