How can I safely check is node empty or not? (Symfony 2 Crawler)

Question

When I try to take some nonexistent content from page I catch this error:

The current node list is empty.
500 Internal Server Error - InvalidArgumentException

How can I safely check exists this content or not? Here some examples that does not work:

if($crawler->filter('.PropertyBody')->eq(2)->text()){
    // bla bla
}

if(!empty($crawler->filter('.PropertyBody')->eq(2)->text())){
    // bla bla
}
if(($crawler->filter('.PropertyBody')->eq(2)->text()) != null){
    // bla bla
}

THANKS, I helped myself with:

$count = $crawler->filter('.PropertyBody')->count();
if($count > 2){
    $marks = $crawler->filter('.PropertyBody')->eq(2)->text();
}

Thanks man. Your solution saved me a lot! – Jereme Dec 03 '15 at 14:46 — Jereme, Dec 03 '15 at 14:46

Alexey Tsinya · Answer 1 · 2019-06-08T20:05:33.160

26

$marks = $crawler->filter('.PropertyBody')->count()
    ? $crawler->filter('.PropertyBody')->eq(2)->text() 
    : '';

edited Jun 08 '19 at 20:05

answered Nov 13 '16 at 17:59

Alexey Tsinya

391
3
4

This is the right answer, not using empty($x). – Awad Haj Oct 14 '22 at 15:41

score 7 · Accepted Answer · answered Aug 07 '12 at 13:21

7

Have you tried something like this?

$text = null;
if (!empty($body = $crawler->filter('.PropertyBody'))) {
    if (!empty($node = $body->eq(2))) {
        $text = $node->text();
    }
}

$this->assertContains('yourText', $text);

answered Aug 07 '12 at 13:21

Vitalii Zurian

17,858
4
64
81

2

the empty function was still bypassed. – Jereme Dec 03 '15 at 14:46
2

did not work for me neither. But using ->count() did the trick – SuN Nov 23 '16 at 17:02

score 2 · Answer 3 · answered Nov 25 '16 at 11:16

2

try {
    $text = $crawler->filter('.PropertyBody')->eq(2)->text();
} catch (\InvalidArgumentException $e) {
    // Handle the current node list is empty..
}

answered Nov 25 '16 at 11:16

Adam Russell

171
1
4

How can I safely check is node empty or not? (Symfony 2 Crawler)

3 Answers3

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