I am currently having issues with frontend forms where the form keys are somehow being overwritten and displaying incorrect form keys. I am currently debugging this issue on the customer login form.
This is snapshot of the code at login.phtml, that i setup to see what the formkey value is.
<?php $retrievedKey = $block->getBlockHtml('formkey'); echo $retrievedKey ; // i made a breakpoint and inspected $retrievedKey, it returned a html output <input> ... </input> with a form key value of, let's name it 'keyA'. ?>
ok so now after i continued the code execution, it renders the page successfully.
And now i go to inspect the form key hidden input on my chrome browser, however, it prints out a totally different form key from 'KeyA'. Let's name this new form key 'KeyB'.
Now i try and do a login, and submit the form. I inspected the request that is sent over, and it indeed passes a form key variable of value that reflects 'KeyB'.
I have placed some breakpoints at 'validate' function of
This is my comparison checker. By right, $formKey and $a should match. However, it does not.
$formKey = $request->getParam('form_key', null); // outputs 'KeyB' $a = $this->_formKey->getFormKey(); // outputs 'KeyA'
Thus, the validation fails, and it redirects me back to the login page with no error message what so ever.
Things to note:
- This behavior only arises in chrome and Microsoft EDGE.
- Firefox works fine, no overwriting is happening
- The form key that is printed out seems to be changing on each refresh. $retrievedKey doesn't refresh each time though
Things i have tried:
- setup:upgrade and setup:static-content:deploy
- cleared var/cache and var/generation
- cleared browser cache and incognito mode
I just can't my head around why the form-key is being overwritten?
Any help or hints on why this is happening would be great. Thanks for reading
Update - I've done some debugging and i figured that page-cache.js is causing the issue by setting the form key again. This is due to the fact that, it is checking my cookies if a 'form_key' cookie is set, if not, create a new form key and save to cookies. The problem is, it is not able to save the cookie, that is why it keeps creating new form keys.
Update - I have solved the issue. This is due to cookie domain issues. Thanks