如何在发布表单前检查表单字段的值- Django

from django import forms

class MyForm(forms.Form):
    name = forms.CharField(max_length=100)
    age = forms.IntegerField(min_value=0)

    def clean(self):
        cleaned_data = super().clean()
        name = cleaned_data.get('name')
        age = cleaned_data.get('age')

        # 自定义验证逻辑
        if name and age and len(name) < age:
            raise forms.ValidationError("姓名长度不能小于年龄")

        return cleaned_data

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            # 表单验证通过，可以使用form.cleaned_data获取验证后的数据
            name = form.cleaned_data['name']
            age = form.cleaned_data['age']
            # 其他处理逻辑
    else:
        form = MyForm()

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