How to dynamically select django model fields in views.py

Question

I am using the DRF and I am trying to dynamically select fields from a django model object so that I can compare them to incoming data. I know how to do this manually

def put(self, request):
    businessPage = BusinessPage.objects.get(id=request.data['id'])
    if businessPage.name != request.data['name']:
        businessPage.name = request.data['name']
    if businessPage.address != request.data['address']:
        businessPage.address = request.data['address']        
    businessPage.save()
    res = {
        'status': 'Success'
    }
    return Response(res)

While this works it feels very messy and repetitive so I started looking for a way to dynamically check if the object field matched the incoming data.

def put(self, request):
    businessPage = BusinessPage.objects.get(id=request.data['id'])
    for obj in request.data:
        if businessPage[obj] != request.data[obj]:
            businessPage[obj] = request.data[obj]
            
    businessPage.save()
    res = {
        'status': 'Success'
    }
    return Response(res)

I haven't been able to figure out the correct syntax to get the correct field from businessPage. Is this possible? Is there a better way to accomplish this task? Any help here would be much appriciated!

Diego Puente · Accepted Answer · 2020-11-12 22:37:24Z

1

you can do this:

bp_id = request.data.pop("id")
BusinessPage.objects.filter(id=bp_id).update(**request.data)

edited Nov 12, 2020 at 22:37

answered Nov 12, 2020 at 22:11

Diego Puente

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1 Comment

Jaxson Mansouri Over a year ago

This worked for what I am trying to accomplish. I did have to add a spread operator to get it to work. BusinessPage.objects.filter(id=request.data['id']).update(**request.data)

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