如何在django中更改日期字段？

# models.py
from django.db import models

class MyModel(models.Model):
    # 其他字段...
    my_date_field = models.DateTimeField()  # 从DateField更改为DateTimeField

python manage.py makemigrations

python manage.py migrate

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

def my_view(request):
    items = MyModel.objects.all()
    return render(request, 'my_template.html', {'items': items})

<!-- my_template.html -->
{% for item in items %}
    <p>{{ item.my_date_field }}</p>  <!-- 确保这里正确显示日期时间 -->
{% endfor %}

# migrations/0003_custom_migration.py
from django.db import migrations

def convert_date_to_datetime(apps, schema_editor):
    MyModel = apps.get_model('your_app_name', 'MyModel')
    for item in MyModel.objects.all():
        item.my_date_field = item.my_date_field.replace(hour=0, minute=0, second=0, microsecond=0)
        item.save()

class Migration(migrations.Migration):
    dependencies = [
        ('your_app_name', '0002_auto_<previous_timestamp>'),
    ]
    operations = [
        migrations.RunPython(convert_date_to_datetime),
    ]

{{ item.my_date_field|date:"Y-m-d H:i:s" }}