Python Selenium - selectbox - option is stale; either the element is no longer attached to the DOM

Dobrý den,

Když chci proklikat celý selectbox s options v python selenium pomocí této konstrukce:

secondSelectId = 'frm-competibleList-competitionsStilter-form-coetitionsStage'
secondSelectBoxx = driver.find_element_by_id(secondSelectId)
secondCountOptions = len(secondSelectBoxx.find_elements_by_tag_name('option'))
secondOptions = [x for x in secondSelectBoxx.find_elements_by_tag_name("option")]

print('Total second TS: ', secondCountOptions)

# loop all options
for secondOption in secondOptions:
secondOptionTabValue = secondOption.get_attribute("value")
print(secondOptionTabValue)

select = Select(driver.find_element_by_id(secondSelectId))
# select by visible text
# select.select_by_visible_text('xyz')
# select by value
select.select_by_value(secondOptionTabValue)

time.sleep(1)

Tak se brzo objeví chyba:

optionis stale; either the element is no longer attached to the DOM, it is not in the current frame context, or the document has been refreshed

Nevíte někdo co s tím? Chci prostě proklikat celý selectbox a tím logicky dochází k refresh stránky a v tom bude problém. Jak to prosím v python selenium vyřešit?


Díky

ODPOVĚĎ

Dobrý den,

chybu v Python Selenium "selenium.common.exceptions.StaleElementReferenceException: Message: The element reference of < option > is stale; either the element is no longer attached to the DOM, it is not in the current frame context, or the document has been refreshed" jsem vyřešil takto:

1.) načíst všechny option values do array firstLoopArray

firstLoopArray = []
for firstValue in firstOptions:
firstLoopArray.append(firstValue.get_attribute("value"))
print (firstValue.get_attribute("value"))

2.) pak teprve options z firstLoopArray iterovat v cyklu + přidat lambda driver

for firstOption in firstLoopArray:
print('Item firstOption: ', firstOption)
WebDriverWait(driver, 10).until(lambda driver: driver.find_element_by_xpath("//option[@value='{0}']" .format(firstOption)))
print("Xpath: //option[@value='{0}']" .format(firstOption))

Jiný příklad:

Do secondOptions si ukládáme všechny elementy ze selectboxu. Pokud však elementy secondOptions projedeme cyklem for, tak dostaneme chybu "....element is no longer attached to the DOM...".

Provedeme proto uložení id všech elementů do pole arrayOptions a provedeme tak další iterace již na arrayOptions a elementy znovu jednotlivě dohledáme dle id pomocí find_element, takže takto:

        secondOptions = [x for x in secondSelectBoxx.find_elements('tag name', "option")]

        # fix error:
        # selenium.common.exceptions.StaleElementReferenceException: Message: The element reference of <option> is stale; either the element is no longer attached to the DOM, it is not in the current frame context, or the document has been refreshed
        # loop all items to get ids  of elements and put ids to arrayOptions
        arrayOptions = []
        for so in secondOptions:
            arrayOptions.append(so.get_attribute("id"))

        # then we can
        # loop all options
        # and we fix error:  element is no longer attached  
        for o in arrayOptions:
            print('secondOption: ', o)
            secondOption = driver.find_element('id', secondSelectId)

.....

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Další moje obecné poznámky pod čarou

# jak selektovat dle textu
select.select_by_visible_text('xyz')
# select by value
select.select_by_value(firstOption)