Django:使用 TemplateView 在 Django 表单中添加编辑和删除功能的问题

Question

我正在通过构建一个名为TravelBuddies的应用程序来学习Django。它将允许旅行者计划他们的旅行并保留相关的旅行项目(如预订、机票、护照复印件、保险信息等(，以及为日常活动创建警报。该应用程序还将能够向旅行者更新本地信息，例如天气或每日新闻。旅行者还可以与某人共享旅行信息，或让某人与他们合作计划旅行。

我创建了一个表单，使用户能够添加他们的旅行信息，如旅行名称、计划者姓名、共同计划者、日期等。但是，我找不到允许他们编辑和删除表单的正确方法。我看过一些视频。但他们不像我一样使用模板视图。所以，我有点困惑。

这是我在addtrip文件夹下forms.py文件中的代码：

from django import forms
from django.contrib.auth.models import User
from django.forms import ModelForm
from trips.models import Trip
class TripForm(ModelForm):
class Meta:
model = Trip
fields = ['trip_name', 'date', 'planner_name', 'add_coplanner', 'trip_description']
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput)
class Meta:
model = User
fields = ['username', 'email', 'password']

这是我在addtrip文件夹下views.py文件中的代码：

from django.contrib.auth import mixins, authenticate, login
from django.shortcuts import render, redirect
from django.views.generic import TemplateView
from .forms import TripForm, UserForm
from trips.models import Trip
from django.http import HttpResponseRedirect
from django.urls import reverse
# Create your views here.

class AddTripFormView(mixins.LoginRequiredMixin, TemplateView):
login_url = 'login/'
template_name = 'addtrip/addtripform.html'
def get(self, request):
form = TripForm()
trips = Trip.objects.all()
args = {'form': form, 'trips': trips}
return render(request, self.template_name, args)
def post(self, request):
form = TripForm(request.POST)
if form.is_valid():
form.save()
trip_name = form.cleaned_data['trip_name']
date = form.cleaned_data['date']
planner_name = form.cleaned_data['planner_name']
trip_description = form.cleaned_data['trip_description']
args = {'form': form, 'trip name': trip_name, 'date': date, 'planner name': planner_name, 'trip description': trip_description}
return HttpResponseRedirect(reverse('trips:triplist'))
class AddUserFormView(TemplateView):
template_name = 'addtrip/registrationform.html'
# Display blank form
def get(self, request):
form = UserForm()
args = {'form': form}
return render(request, self.template_name, args)
# Process form data
def post(self, request):
form = UserForm(request.POST)
if form.is_valid():
user = form.save(commit=False)
username = form.cleaned_data['username']
password = form.cleaned_data['password']
user.set_password(password)
user.save()
# return user object if credentials are correct
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
login(request, user)
return redirect('addtrip:login')
return render(request, self.template_name, {'form': form})

这是我在addtrip文件夹下urls.py文件中的代码：

from . import views
from django.urls import path
from django.contrib.auth import views as auth_views
app_name = 'addtrip'
urlpatterns = [
path('addtrip/', views.AddTripFormView.as_view(), name='addtrip'),
path('register/', views.AddUserFormView.as_view(), name='register'),
# login
path('addtrip/login/', auth_views.LoginView.as_view(template_name='addtrip/login.html'), name='login'),
# logout
path('logout/', auth_views.LogoutView.as_view(), name='logout'),
]

以下是我在模板文件夹内addtripform.html文件中的代码：

{% extends 'base.html' %}
{% load static %}
{% block title %} Add Trip {% endblock %}
{% block content %}
<div class="container">
<h2>Add New Trip</h2>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button type="submit">Submit</button>
</form>
{% endblock %}

这是我在旅行文件夹中models.py的代码：

from django.contrib.auth.models import User
from django.db import models
class Trip(models.Model):
trip_name = models.CharField(max_length=100)
date = models.DateField()
planner_name = models.CharField(max_length=100)
add_coplanner = models.ManyToManyField(User)
trip_description = models.CharField(max_length=1000, default='null')
slug = models.SlugField(max_length=150, default='null')
def __str__(self):
return self.trip_name
def save(self, *args, **kwargs):
self.slug = slugify(self.trip_name)
super().save(*args, **kwargs)

class Activity(models.Model):
trip = models.ForeignKey(Trip, on_delete=models.CASCADE)
activity_name = models.CharField(max_length=100)
date = models.DateField()
time = models.TimeField()
location = models.CharField(max_length=100)
activity_description = models.CharField(max_length=1000, default='null')
item_type = models.CharField(max_length=100)
item_number = models.CharField(max_length=100)
add_cotraveller = models.ManyToManyField(User)
slug = models.SlugField(max_length=150, default='null')
def __str__(self):
return self.activity_name
def save(self):
super(Activity, self).save()
self.slug = '%i-%s' % (
self.id, slugify(self.trip.trip_name)
)
super(Activity, self).save()

这是我在旅行文件夹中urls.py的代码：

from . import views
from django.urls import path
app_name = 'trips'
urlpatterns = [
path('triplist/', views.TripListView.as_view(), name='triplist'),
path('triplist/<slug:slug>/', views.ActivityView.as_view(), name='activity'),
path('tripapi/', views.TripApiView.as_view()),
path('tripapi/<int:pk>/', views.TripDetailApiView.as_view()),
]

如何在表单中添加编辑和删除功能？是否可以使用def update(self, request):和def delete(self, request):等功能在模板视图中添加编辑和删除功能？

Answer 1

您需要的是通用编辑视图。其中包括FormViews、CreateViews、UpdateViews和DeleteViews。加上ListViews和DetailViews，你已经得到了一个项目所需的95%的视图，基本上是为你建造的一半。