Python with selenium: access iframe whose src is returned by javascript function

Question

I'm completely new to selenium and javascript. The webpage that I'm working on uses javascript to do certain authentication and construct the url for a frame.

The code looks something like:

<iframe id="main_contents"></iframe>
<script type="text/javascript">
var baseUrl = 'http://xxxxxxxxx.com/';
function init() {
    gadgets.io.makeRequest(baseUrl+"auth/", function(obj) {
        var iframe = document.getElementById("main_contents");
        if (obj.data.status == 'OK') {
            iframe.src = baseUrl+"?xx="+obj.data.xx;
            ...
        }
        ...
    }, params);
}

I have tried to directly locate the frame with find_element_by_tag_name but of course its src is empty. I have no idea how to switch to this frame. Could anyone suggest? Thank you very much!!

Problem has been solved

Seraph
– Seraph

2016-10-22 08:26:05 +00:00
Commented Oct 22, 2016 at 8:26 — Seraph
– Seraph, Commented Oct 22, 2016 at 8:26

Saurabh Gaur · Accepted Answer · 2016-10-21 23:28:35Z

1

You can switch to this iframe using their id attribute value as well as below :-

driver.switch_to_frame("main_contents")

Or if this iframe takes time to load on the DOM, you should try to switch using Explicit Waits with WebDriverWait to wait until iframe available to switch as well as below :-

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

WebDriverWait(driver, 10).until(EC.frame_to_be_available_and_switch_to_it(("main_contents")))

edited Oct 21, 2016 at 23:28

answered Oct 21, 2016 at 23:22

Saurabh Gaur

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7 Comments

Seraph Over a year ago

Thank you for your comment, but I have tried that, it doesn't work. There was no error but the session is not switch to the frame. Ex, I tested

Seraph Over a year ago

frame = browser.find_element_by_id("main_contents") print (frame.get_attribute("src")) there is no output

Saurabh Gaur Over a year ago

@Seraph if there is no error, how could you know it didn't switch to iframe?? Did you find some element after switching inside this iframe?? And do you want to switch iframe element or want to get it as src attribute value??

Saurabh Gaur Over a year ago

And make sure src attribute value is present in iframe as well

Seraph Over a year ago

Thank you so much! I finally figured it out that the session will first jump to an invisible frame A and redirect to frame B immediately. A and B have very similar src and I was not aware of the existence of frame A. I thought selenium is in frame B but actually it's stuck on frame A.

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