Python 在django中使用CreateView传递数据
我得到一个错误: 非空约束失败:films\u comment.film\u id 在评论页面上有一个名为body的表单字段用于评论本身,我还需要它来存储针对用户和电影的评论 型号:Python 在django中使用CreateView传递数据,python,django,Python,Django,我得到一个错误: 非空约束失败:films\u comment.film\u id 在评论页面上有一个名为body的表单字段用于评论本身,我还需要它来存储针对用户和电影的评论 型号: from django.db import models from django.urls import reverse class Film(models.Model): title = models.CharField(max_length=200) director = models.Cha
from django.db import models
from django.urls import reverse
class Film(models.Model):
title = models.CharField(max_length=200)
director = models.CharField(max_length=200)
description = models.CharField(max_length=200)
pub_date = models.DateField('date published')
def get_absolute_url(self):
return reverse('films:detail', kwargs={'pk' : self.pk})
class Comment(models.Model):
# user = models.ForeignKey(User, on_delete=models.CASCADE)
user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
film = models.ForeignKey(Film, on_delete=models.CASCADE)
body = models.CharField(max_length=200)
观点:
from django.views import generic
from .models import Film, Comment
from django.views.generic.edit import CreateView, UpdateView, DeleteView
class IndexView(generic.ListView):
# model = Film
template_name = 'films/index.html'
# context_object_name = 'object_list'
def get_queryset(self):
return Film.objects.all()
class DetailView(generic.DetailView):
model = Film
template_name = 'films/detail.html'
class CommentCreate(CreateView):
model = Comment
fields = ['body']
网址:
您需要覆盖视图的
form\u valid
方法,以使用当前用户和胶片更新新的注释实例:
class CommentCreate(CreateView):
model = Comment
fields = ['body']
def form_valid(self, form):
film = Film.objects.get(pk=self.kwargs['film_id'])
form.instance.user = self.request.user
form.instance.film = film
return super(CommentCreate, self).form_valid(form)
要修复“无URL重定向到”,可以将get\u absolute\u URL()
方法添加到注释模型中:
def get_absolute_url(self):
return reverse('detail', kwargs={'pk': self.film.pk})
您需要覆盖视图的
form\u valid
方法,以使用当前用户和胶片更新新的注释实例:
class CommentCreate(CreateView):
model = Comment
fields = ['body']
def form_valid(self, form):
film = Film.objects.get(pk=self.kwargs['film_id'])
form.instance.user = self.request.user
form.instance.film = film
return super(CommentCreate, self).form_valid(form)
要修复“无URL重定向到”,可以将get\u absolute\u URL()
方法添加到注释模型中:
def get_absolute_url(self):
return reverse('detail', kwargs={'pk': self.film.pk})
您尚未显示视图。很抱歉,我刚刚添加了它。您尚未显示视图。很抱歉,我刚刚添加了它,并添加了以下代码:“没有要重定向到的URL。请在模型上提供URL或定义get_absolute_URL方法。”但它已成功保存。谢谢。我不理解return super,我不得不将“细节”改为“电影:细节”,但它现在起作用了。这有助于我理解SuperControl。我添加了以下代码:“没有要重定向到的URL。请在模型上提供URL或定义get_absolute_URL方法。”但它已成功保存。谢谢。我不理解return super,我不得不将“细节”改为“电影:细节”,但它现在起作用了。这帮助我理解了超级
from django import forms
from .models import Comment
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
fields = ('body',)
class CommentCreate(CreateView):
model = Comment
fields = ['body']
def form_valid(self, form):
film = Film.objects.get(pk=self.kwargs['film_id'])
form.instance.user = self.request.user
form.instance.film = film
return super(CommentCreate, self).form_valid(form)
def get_absolute_url(self):
return reverse('detail', kwargs={'pk': self.film.pk})