Laravel雄辩的foreach循环

Question

I am having a foreach loop that goes through an array, and saves data with eloquent. And it works fine when it is like this:

foreach($questions['questions'] as $question) {

    $questionObject = Question::create([
      'external_id' => $question['id'],
      'text' => $question['question_text'],
      'type' => $question['question_type'],
      'image' => (array_key_exists('question_image', $question)) ?
          $question['question_image'] : ''
    ]);

}

But when I add if condition I get undefined variable question error.

foreach($questions['questions'] as $question) {

    if(!$question = Question::where('id', $question['id'])->where(
        function($query){
            $query->where('updated_at','<', $question['updated']);
        }})->first()) {

        $questionObject = Question::create([
            'external_id' => $question['id'],
            'text' => $question['question_text'],
            'type' => $question['question_type'],
            'image' => (array_key_exists('question_image', $question)) ?
                $question['question_image'] : ''
        ]);
    } else {
        return 'Question: '.$question['external_id'].' already exist.';
    }
}

If any could help me with that, would very much appreciate that, thanks in advance!

Answer 1

You are not injecting $question into your callback function. You need to use the use keyword:

if(!$question = Question::where('id', $question['id'])->where(function($query) use ($question) { $query-  >where('updated_at','<', $question['updated']); })->first()) {

Notice I added the use ($question) bit after function($query)

This allows $question to be accessed within the scope of the callback.