How to reallocate one object to another Django
So, the story begins long back ago when I was trying to move some of my lead from one campaign to another campaign. The concept was pretty much clear in my mind but still, I was worried to do so because of obvious reasons.
- what if it fails to do so
- what will be the correct way
- do I need to verify it again
So without much writing let's get how to do this in a proper way.
The goal of this blog to get an understanding of how to move the object instance from one object to another.
As in getting the movable data and date from the client-side and fetching the data and after than moving the data into a new instance.
What we gonna do?
- get the data from the client-side i.e. data-range, origin, destination
- validate the data
- move the data and sent back a response
I'm using Python 3.6 and DRF 2 and to create API View, I'll be using the APIView for now but you can use any view as it is applicable for all.
1. Getting the data from client-side
from_date = request.POST.get('from_date', '') to_date = request.POST.get('to_date', '') origin = request.POST.get('origin', '') destination = request.POST.get('destination', '')
2. Validating the request
if not all(len(i) > 0 for i in [from_date, to_date, origin, destination]): data['msg'] = 'Please select all the value' data['status'] = 1 return HttpResponse(json.dumps(data), content_type='application/json')
3. Converting the client-side date into Django format
start_datetime = datetime.strptime(from_date, format_str) end_datetime = datetime.strptime(to_date, format_str) start_dt = datetime(day=start_datetime.day, month=start_datetime.month, year=start_datetime.year, hour=start_datetime.hour, minute=start_datetime.minute) end_dt = datetime(day=end_datetime.day, month=end_datetime.month, year=end_datetime.year, hour=end_datetime.hour, minute=end_datetime.minute)
4. Selecting the Moving campaign
campaign_to_extract_leads = Campaign.objects.get(slug=origin)
5. Now fetching the lead from campaign
total_leads_fetch = Lead.objects.filter(campaign=campaign_to_extract_leads, is_active=True, added_on__range=(start_dt, end_dt))
6. List out ids which need to be moved
total_leads_ids = list(total_leads_fetch.values_list('id', flat=True))
7. Select the campaign where you want to move the leads
8. Now reallocating our object into a new instance
That's it, we have successfully moved the lead from the old campaign to the new campaign so using this way you'll easily able to move the old instance object into new.