如何在django中保存自定义ModelForm字段

# models.py
from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    custom_field = models.CharField(max_length=100)  # 自定义字段

# forms.py
from django import forms
from .models import MyModel

class MyModelForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = ['name', 'custom_field']

# forms.py
from django import forms
from .models import MyModel

class MyModelForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = ['name', 'custom_field']

    def clean_custom_field(self):
        custom_field = self.cleaned_data['custom_field']
        # 在这里进行自定义处理，例如验证或格式化
        if len(custom_field) < 5:
            raise forms.ValidationError("Custom field must be at least 5 characters long.")
        return custom_field.upper()  # 示例：将字段转换为大写

# views.py
from django.shortcuts import render, redirect
from .forms import MyModelForm

def my_view(request):
    if request.method == 'POST':
        form = MyModelForm(request.POST)
        if form.is_valid():
            form.save()  # 这将保存表单数据到数据库
            return redirect('success_url')  # 重定向到成功页面
    else:
        form = MyModelForm()
    
    return render(request, 'my_template.html', {'form': form})