如何将通过表单获取的字段与在django中创建的模型的字段进行比较？

# forms.py
from django import forms

class MyForm(forms.Form):
    field1 = forms.CharField(label='Field 1')
    field2 = forms.IntegerField(label='Field 2')

# views.py
from django.shortcuts import render
from .forms import MyForm
from .models import MyModel

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            field1_value = form.cleaned_data['field1']
            field2_value = form.cleaned_data['field2']

            # 与模型字段进行比较
            matching_instances = MyModel.objects.filter(field1=field1_value, field2=field2_value)

            # 其他处理逻辑...

    else:
        form = MyForm()

    return render(request, 'my_template.html', {'form': form})