嗨，大家好，我是Django的初学者，我正在尝试在我的django规划器中实现登录系统。
错误：
/ login_user /中的FieldError无法将关键字“user”解析为字段。选项包括：description，end_time，id，start_time，title
我已经尝试将用户字段添加到我的model.py上的事件模型中并进行迁移，但它只会使整个应用程序崩溃。
def event(request, event_id=None):
instance = Event()
if event_id:
instance = get_object_or_404(Event, pk=event_id)
else:
instance = Event()
form = EventForm(request.POST or None, instance=instance)
if request.POST and form.is_valid():
form.save()
return HttpResponseRedirect(reverse('cal:calendar'))
return render(request, 'cal/event.html', {'form': form})
def login_user(request):
if request.method == "POST":
username = request.POST['username']
password = request.POST['password']
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
events = Event.objects.filter(user=request.user)
login(request, user)
return render(request, 'cal/calendar.html', {'calendar': calendar})
else:
return render(request, 'cal/login.html', {'error_message': 'Your account has been disabled'})
else:
return render(request, 'cal/login.html', {'error_message': 'Invalid login'})
return render(request, 'cal/login.html')
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput)
class Meta:
model = User
fields = ['username', 'email', 'password',]
from django.contrib.auth.models import Permission, User
from django.db import models
class Event(models.Model):
#user = models.ForeignKey(User, default=1)
title = models.CharField(max_length=200)
description = models.TextField()
start_time = models.DateTimeField()
end_time = models.DateTimeField()
@property
def get_html_url(self):
url = reverse('cal:event_edit', args=(self.id,))
return f'<a href="{url}"> {self.title} </a>'
{% extends 'cal/base.html' %}
{% block title %}
Calendar
{% endblock %}
{% block content %}
<div class="clearfix">
<a class="btn btn-info left" href="{% url 'cal:calendar' %}?{{ prev_month }}"> Previous Month </a>
<a class="btn btn-info right" href="{% url 'cal:calendar' %}?{{ next_month }}"> Next Month </a>
<a class="btn btn-info right" href="{% url 'cal:event_new' %}"> New Event </a>
</div>
{{ calendar }}
{% endblock %}
{% extends 'cal/base_visitor.html' %}
{% block title %}Log In{% endblock %}
{% block login_active %}active{% endblock %}
{% block body %}
<div class="container-fluid">
<div class="row">
<div class="col-sm-12 col-md-6">
<div class="panel panel-default">
<div class="panel-body">
<h3>Log In</h3>
{% if error_message %}
<p><strong>{{ error_message }}</strong></p>
{% endif %}
<form class="form-horizontal" role="form" action="{% url 'cal:login_user'%}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<div class="form-group">
<label class="control-label col-sm-2" for="id_username">
Username:
</label>
<div class="col-sm-10">
<input id="id_username" maxlength="30" name="username" type="text">
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-2" for="id_password">
Password:
</label>
<div class="col-sm-10">
<input id="id_password" maxlength="30" name="password" type="password">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-success">Submit</button>
</div>
</div>
</form>
</div>
<div class="panel-footer">
Don't have an account? <a href="{% url 'cal:register' %}">Click here</a> to register.
</div>
</div>
</div>
</div>
</div>
{% endblock %}
在您的视图中，您使用关键字user过滤Event对象，但您的事件模型没有名为user的字段。如果您希望事件与用户关联，则可以向事件模型添加外键：
class Event(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.PROTECT)
title = models.CharField(max_length=200)
description = models.TextField()
start_time = models.DateTimeField()
end_time = models.DateTimeField()
@property
def get_html_url(self):
url = reverse('cal:event_edit', args=(self.id,))
return f'<a href="{url}"> {self.title} </a>'
或者，在您的视图中，您可以简单地使用其他关键字过滤您的事件对象，这些关键字是您的错误为您提供的选项，以及您在模型中指定的字段。所以在你看来你可以这样做：
def login_user(request):
if request.method == "POST":
username = request.POST['username']
password = request.POST['password']
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
events = Event.objects.filter(title='Title you want to filter by') # This line seems to be the source of your error. You just need to filter by a keyword that exists in your model.
login(request, user)
return render(request, 'cal/calendar.html', {'calendar': calendar})
else:
return render(request, 'cal/login.html', {'error_message': 'Your account has been disabled'})
else:
return render(request, 'cal/login.html', {'error_message': 'Invalid login'})
return render(request, 'cal/login.html')
在models.py中，您错过了为用户表添加关系。添加用户并执行操作
python manage.py makemigrations myapp
python manage.py迁移myapp
from django.contrib.auth import get_user_model
class Event(models.Model):
user = models.ForeignKey(get_user_model(), null=True)
title = models.CharField(max_length=200)
description = models.TextField()
start_time = models.DateTimeField()
end_time = models.DateTimeField()
@property
def get_html_url(self):
url = reverse('cal:event_edit', args=(self.id,))
return f'<a href="{url}"> {self.title} </a>'