如何在Django应用的“评论”视图中解决此错误？ [英] How do i fix this error in my Comments view in my Django app?

问题描述

我正尝试在Django中开发一个应用。目前，我正在尝试为用户创建评论部分，以便用户使用表单编写和提交评论。我制作了一个模板，用于显示电影的信息以及用户可以在电影上发表评论的形式。

I'm trying to develop an app in Django. At the moment I'm trying to create a comment section for the users to write and submit comments by using a form. I made a template which shows the info of a movie as well as a form through which users can write comments on the film.

问题是当我写评论时并尝试提交，显示此错误：

The problem is that when I write the comment and try to submit it this error shows up :

/ myapp2 / 2 / 中的IntegrityError
没有NULL约束失败：myapp2_comentario.pelicula_id

IntegrityError at /myapp2/2/ NOT NULL constraint failed: myapp2_comentario.pelicula_id

我的Views.py

my Views.py

def detallesPelicula(request, pelicula_id):
    peliculas = get_list_or_404(Pelicula.objects.order_by('titulo'))
    pelicula = get_object_or_404(Pelicula, pk=pelicula_id)
    actor = get_list_or_404(Actor.objects)

    comentarios = Comentario.objects.filter(pelicula=pelicula).order_by('fecha')

    if request.method =='POST':
        comment_form = CommentForm(data=request.POST)
        if comment_form.is_valid():
            comment_form.save()
            texto = request.POST.get('texto')
            comentario = Comentario.objects.create(
                usuario=request.user, pelicula=pelicula, texto=texto)
            comentario.save()
        return HttpResponseRedirect(pelicula.get_absolute_url())
    else:
        comment_form= CommentForm()    

    context = {'pelicula': pelicula, 'peliculas': peliculas, 
        'comentarios':comentarios,'comment_form':comment_form}
    return render(request, 'detallesPelicula.html', context)

我的表单.py

class CommentForm(forms.ModelForm):
    class Meta:
        model = Comentario
        fields = ['texto']

my Models.py

my Models.py

class Comentario(models.Model):
    usuario = models.ForeignKey(Usuario, on_delete=models.CASCADE)
    pelicula =models.ForeignKey(Pelicula, on_delete=models.CASCADE)
    fecha = models.DateTimeField(auto_now_add=True,null=True,blank=True)
    texto = models.TextField(max_length=2000, default="")

注意：用户是从Django身份验证系统中获取的。

Note: the users are taken from the Django authentification system.

非常感谢帮助。

推荐答案

# remove this line to fix the problem
comentario.save() 

上面的代码行没有设置 pelicula 字段。您的models.py将其定义为必填字段，这就是为什么您收到IntegrityError的原因。您可以删除代码，因为
代码的前行

The above line of code does not have pelicula field set. Your models.py defines it as a required field, that is why you are getting IntegrityError. You can delete the code because the preceding line of code

# this should be valid because it contains all the required fields
comentario = 
Comentario.objects.create(usuario=request.user, pelicula=pelicula, texto=texto) 

已经创建了注释。

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