如何修复：无法将关键字“用户”解析为字段。选项有：description、end_time、id、start_time、title Django 错误
Posted
技术标签:
【中文标题】如何修复：无法将关键字“用户”解析为字段。选项有：description、end_time、id、start_time、title Django 错误【英文标题】：How to Fix: Cannot resolve keyword 'user' into field. Choices are: description, end_time, id, start_time, title Django Error 【发布时间】：2019-08-16 07:07:54 【问题描述】：大家好，我是 Django 的初学者，我正在尝试在我的 django 规划器中实现一个登录系统。
错误：
/login_user/ 处的字段错误 无法将关键字“用户”解析为字段。选项有：description、end_time、id、start_time、title
我尝试在 model.py 上将用户字段添加到我的事件模型中并迁移它，但它只会使整个应用程序崩溃。
views.py
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')
forms.py
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput)
class Meta:
model = User
fields = ['username', 'email', 'password',]
models.py
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>'
日历.html
% 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 %
login.html
% 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 %
【问题讨论】：
【参考方案1】：在您看来，您正在使用关键字 user 过滤事件对象，但您的事件模型没有名为 user 的字段。如果您希望您的事件与用户相关联，您可以在事件模型中添加外键：
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，在您看来，您可以简单地通过另一个关键字过滤您的事件对象，您的错误为您提供了选择，而这些选择正是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')
【讨论】：
【参考方案2】：在您的 models.py 中，您错过了为用户表添加关系。添加用户并做一个
python manage.py makemigrations myapp
python manage.py migrate 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>'
【讨论】：
以上是关于如何修复：无法将关键字“用户”解析为字段。选项有：description、end_time、id、start_time、title Django 错误的主要内容，如果未能解决你的问题，请参考以下文章
无法将关键字“用户”解析为字段。选项有：create_account、email、full_name