No name iframe

behat.inc.php

    /**
     * Sets an iFrame ID to no_name_iframe if there is no ID. You can then add a Switch to iFrame step after it using the na_name_iframe ID. 
     *
     * @Given /^I the set the iframe located in element with an id of "([^"]*)"$/
     */
    public function iSetTheIframeLocatedInElementWithAnIdOf($element_id) {

        $check = 1; //@todo need to check using js if exists
        if($check <= 0) {
            throw new \Exception('Element not found');
        } else {
        $javascript = <<<JS
            (function(){
              var elem = document.getElementById('$element_id');
              var iframes = elem.getElementsByTagName('iframe');
              var f = iframes[0];
              f.id = "no_name_iframe";
            })()
JS;
        $this->getMainContext()->getSession()->executeScript($javascript);
        }
    }

Come up to this solution:

/**
 * @Given I switch to iframe with locator :locator
 * CSS, xPath values input
 * @param String $locator
 */
public function iSwitchToIFrameWithLocator($locator)
{
    $value = $this->takeValueFromIniFile('locators', $locator);
    $iframe = $this->getSession()->getPage()->find("css", $value);
    $iframeName = $iframe->getAttribute("name");

    if ($iframeName == "") {
        echo "\n\niFrame has no name. Let's name it.\n\n";
        $javascript = "(function(){
        console.log('JS code works. First line.');
        var iframes = document.getElementsByTagName('iframe');
        for (var i = 0; i < iframes.length; i++) {
            iframes[i].name = 'iframe_number_' + (i + 1) ;
        }
        })()";
        $this->getSession()->executeScript($javascript);
        $iframe = $this->getSession()->getPage()->find("css", $value);
        $iframeName = $iframe->getAttribute("name");
        echo "\n\niFrame has new name:  " . $iframeName . "\n\n";
    } else {
        echo "\n\niFrame already has a name: " . $iframeName . "\n\n";
    }

    $this->getSession()->getDriver()->switchToIFrame($iframeName);
}