I am Using Celery to perform a task in the background on form submission.
As soon as form is submitted during POST request, I have created a task to
execute in the back ground using delay method. This task processes some
click operations on some other web using selenium web driver and return two
python lists after task execution. Based on list content I want to display
pop up message.
When I execute the task using celery and run the Django web development
server on form submit , I am getting error message: 'AsyncResult' object is
not iterable”.
Please suggest how to resolve this issue and proceed further.
Here is my code snippet: sample List content which obtained through
selenium operations on web page is as shown below:
board_not_used_list = ['16123','14960']
board_mgr_permissions_not_present_list = [ '23456','45678']
views.py:
--------
def conclude_key_issue_form(request, id=None):
if id:
action = 'edit'
model = get_object_or_404(ConcludeKeyIssues, pk=id)
else:
action = 'submit'
model = ConcludeKeyIssues()
message = ""
if request.method == 'POST':
form = ConcludeKeyIssuesForm(request.POST, instance=model)
selected_model_name = request.POST.get('registered_model')
if form.is_valid():
new_key_issue_request = form.save(commit=False)
new_key_issue_request.integrator_id = request.user.username
integrator_username = new_key_issue_request.integrator_id
integrator_password = form.cleaned_data['integrator_pwd']
new_key_issue_request.integrator_pwd = integrator_password
new_key_issue_request.save()
form.save_m2m()
created_pk = new_key_issue_request.pk
if id is None:
board_not_used_list,
board_mgr_permissions_not_present_list=
task_check_board_availability_and_permissions.delay(created_pk)
if board_not_used_list and
board_mgr_permissions_not_present_list:
alert_flag = True
alert_message = "SAS Board ID's:{} in Not Used state."
context = {'form': form, 'registered_model_data':
registered_models,
'alert': alert_flag, 'alert_message':
json.dumps(alert_message)}
return render(request, 'ConcludeKeyIssue.html', context)
elif not board_not_used_list and
board_mgr_permissions_not_present_list:
alert_flag = True
alert_message = "You don't have Board Manager Permissions"
context = {'form': form, 'registered_model_data':
registered_models,
'alert': alert_flag, 'alert_message':
json.dumps(alert_message)}
return render(request, 'ConcludeKeyIssue.html', context)
return HttpResponseRedirect('/swatapp/ConcludeKeyIssueList')
else:
print("Fill Conclude Key Issues")
form = ConcludeKeyIssuesForm(instance=model)
context = {'form': form,'Message': message, 'action': action}
return render(request, 'ConcludeKeyIssue.html', context)
Tasks.py:--------@app.task(name="task_check_board_availability_and_permissions")def
task_check_board_availability_and_permissions(created_pk):
print("From tasks.py conclude_key_issue_through_selenium")
print("Conclude Key Issue Through Selenium")
latest_record_pk = created_pk
# Get the instances of ConcludeKeyIssues
conclude_key_issue_obj_list = ConcludeKeyIssues.objects.all()
# Get the latest created record details
get_created_record_details =
ConcludeKeyIssues.objects.get(pk=latest_record_pk)
# Get the id or location value of selected from SAS URL
sas_board_ids = get_created_record_details.sas_ids
# Get SAS Board IDs in list
sas_board_ids_list = sas_board_ids.split(",")
# Input username and password
username = get_created_record_details.integrator_id
password = get_created_record_details.integrator_pwd
board_not_used_list, board_mgr_permissions_not_present_list = \
check_board_availability_and_permissions_for_all_requested_sas(sas_board_ids_list,
username,
password)
return board_not_used_list, board_mgr_permissions_not_present_list
settings.py:------------
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'crispy_forms',
'swatapp',
'django_celery_results',]
CELERY_BROKER_URL = 'amqp://guest:guest@localhost:5672//'
CELERY_RESULT_BACKEND = 'django-db'
1.Please suggest how to resolve this error and proceed further.
2.How to retrieve the 2 lists [
board_not_used_list,board_mgr_permissions_not_present_list] using celery result.
Regards,
N.Dilip Kumar.
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