How to use variable to choose which Proxy model will be used in Django
===

I have a model

    #models.py
    class BaseModel(model.Models)
        some_field = ...
    
    class Proxy_1(BaseModel)
        class Meta:
            proxy=True
    
    class Proxy_2(BaseModel)
        class Meta:
            proxy=True
    
    class Proxy_3(BaseModel)
        class Meta:
            proxy=True

in my view

    #views.py
        #check the field and based on the value
        #choose appropriate Proxy model
        if request.POST['some_field'] == '1'
            # Table_Name = Proxy_1   ??????? ---HERE ---
        if request.POST['some_field'] == '2'
            # Table_Name = Proxy_2   ??????? ---HERE ---
        if request.POST['some_field'] == '3'
            # Table_Name = Proxy_3   ??????? ---HERE ---
    
        foo = Table_Name.objects.get_or_create(...)

I don't really know how to do it...
Obviously I can write foo = Table_Name.objects.get_or_create(...) in between request.POST calls, but it would bee too long and hard to debug in the future.

My ideas was also about creating a function in models.py to check that, but again don't know how to do that, or may be somehow check it in my html template.

Thank you 